Motor Control 10-24V Driver
Board (Dual/Single)
User’s Guide
2014 Microchip Technology Inc.
DS50002261A
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash
and UNI/O are registered trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MTP, SEEVAL and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.
Analog-for-the-Digital Age, Application Maestro, BodyCom,
chipKIT, chipKIT logo, CodeGuard, dsPICDEM,
dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O,
Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA
and Z-Scale are trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
GestIC and ULPP are registered trademarks of Microchip
Technology Germany II GmbH & Co. KG, a subsidiary of
Microchip Technology Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2014, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-63276-149-1
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
DS50002261A-page 2
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
2014 Microchip Technology Inc.
Object of Declaration: Motor Control 10-24V Driver Board (Dual/Single)
2014 Microchip Technology Inc.
DS50002261A-page 3
Motor Control 10-24V Driver Board (Dual/Single)
NOTES:
DS50002261A-page 4
2014 Microchip Technology Inc.
MOTOR CONTROL 10-24V
DRIVER BOARD (DUAL/SINGLE)
USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 7
Chapter 1. Introduction
1.1 Overview ...................................................................................................... 13
1.2 Motor Control 10-24V Driver Board (Dual/Single) Features ......................... 13
1.3 Block Diagram .............................................................................................. 15
Chapter 2. Board Interface Description
2.1 Introduction ................................................................................................... 17
2.2 Highlights ...................................................................................................... 17
2.3 Board Connectors ........................................................................................ 17
2.4 User Interface Hardware .............................................................................. 35
Chapter 3. Hardware Description
3.1 Introduction ................................................................................................... 41
3.2 Highlights ...................................................................................................... 41
3.3 Three-Phase Inverter Bridge and Gate Driver .............................................. 43
3.4 DC Bus Voltage Sensing .............................................................................. 43
3.5 Hall Sensor/Quadrature Encoder Interface .................................................. 44
3.6 Back-EMF and Recreated Neutral Signals ................................................... 45
3.7 Phase and Bus Current Sensing Circuits ..................................................... 46
3.8 Fault Generation Logic Circuit ...................................................................... 50
3.9 Brake Circuit ................................................................................................. 52
3.10 Power Supply ............................................................................................. 55
Appendix A. Board Schematics and Layout
A.1 Introduction .................................................................................................. 57
A.2 Board Schematics and Layout ..................................................................... 57
Appendix B. Electrical Specifications
B.1 Introduction .................................................................................................. 63
Appendix C. Component Selection
C.1 Introduction .................................................................................................. 65
C.2 Highlights ..................................................................................................... 65
C.3 Motor Current Amplifier Configuration ......................................................... 65
C.4 Brake Current Amplifier Configuration ......................................................... 68
C.5 Hardware Brake Enable Circuit Configuration ............................................. 70
C.6 Hardware Brake Enable Circuit Configuration Resistors ............................. 73
Worldwide Sales and Service .................................................................................... 74
2014 Microchip Technology Inc.
DS50002261A-page 5
Motor Control 10-24V Driver Board (Dual/Single)
NOTES:
DS50002261A-page 6
2014 Microchip Technology Inc.
MOTOR CONTROL 10-24V
DRIVER BOARD (DUAL/SINGLE)
USER’S GUIDE
Preface
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs and/
or tool descriptions may differ from those in this document. Please refer to our web site
(www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXXXXA”, where “XXXXXXXX” is the document number and “A” is the revision level
of the document.
For the most up-to-date information on development tools, see the MPLAB® IDE online help.
Select the Help menu, and then Topics to open a list of available online help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
Motor Control 10-24V Driver Board (Dual/Single). Items discussed in this chapter
include:
•
•
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Warranty Registration
Recommended Reading
The Microchip Web Site
Development Systems Customer Change Notification Service
Customer Support
Document Revision History
2014 Microchip Technology Inc.
DS50002261A-page 7
Motor Control 10-24V Driver Board (Dual/Single)
DOCUMENT LAYOUT
This document describes how to use the Motor Control 10-24V Driver Board (Dual/
Single). This user’s guide is composed of the following chapters:
• Chapter 1. “Introduction” provides a brief overview of the Motor Control 10-24V
Driver Board (Dual/Single) and its features.
• Chapter 2. “Board Interface Description” summarizes the Motor Control 10-24V
Driver Board (Dual/Single) input and output interfaces.
• Chapter 3. “Hardware Description” provides the hardware descriptions of the
Motor Control 10-24V Driver Board (Dual/Single).
• Appendix A. “Board Schematics and Layout” provides a block diagram,
board layouts and detailed schematics of the Motor Control 10-24V Driver Board
(Dual/Single).
• Appendix B. “Electrical Specifications” provides the electrical specifications of
the Motor Control 10-24V Driver Board (Dual/Single).
• Appendix C. “Component Selection” details the component selection of the
motor current amplifier, brake current amplifier and the hardware brake enable circuit.
DS50002261A-page 8
2014 Microchip Technology Inc.
Preface
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Represents
Examples
Italic characters
Referenced books
MPLAB IDE User’s Guide
Emphasized text
...is the only compiler...
Initial caps
A window
the Output window
A dialog
the Settings dialog
A menu selection
select Enable Programmer
A field name in a window or
dialog
“Save project before build”
Quotes
Underlined, italic text with A menu path
right angle bracket
File>Save
Bold characters
Click OK
A dialog button
A tab
Text in angle brackets < > A key on the keyboard
Click the Power tab
Press <Enter>, <F1>
Sample source code
#define START
Filenames
autoexec.bat
File paths
c:\mcc18\h
Keywords
_asm, _endasm, static
Command-line options
-Opa+, -Opa-
Bit values
0, 1
Constants
0xFF, ‘A’
Italic Courier New
A variable argument
file.o, where file can be any
valid filename
Square brackets [ ]
Optional arguments
mcc18 [options] file
[options]
Curly brackets and pipe
character: { | }
Choice of mutually exclusive
arguments; an OR selection
errorlevel {0|1}
Ellipses...
Replaces repeated text
var_name [, var_name...]
Represents code supplied by
user
void main (void)
{ ...
}
Plain Courier New
Notes
A Note presents information
that we want to re-emphasize,
Note: This is a standard
either to help you avoid a
note box.
common pitfall or to make you
aware of operating differences
CAUTION
between some device family
members. A Note can be in a
box, or when used in a table or This is a Caution note.
figure, it is located at the
Note 1: This is a note used in a
bottom of the table or figure.
table.
WARRANTY REGISTRATION
Please complete the enclosed Warranty Registration Card and mail it promptly.
Sending in the Warranty Registration Card entitles users to receive new product
updates. Interim software releases are available at the Microchip web site.
2014 Microchip Technology Inc.
DS50002261A-page 9
Motor Control 10-24V Driver Board (Dual/Single)
RECOMMENDED READING
This user’s guide describes how to use the Motor Control 10-24V Driver Board (Dual/
Single). The following Microchip documents are available and recommended as
supplemental reference resources.
MPLAB® X IDE User’s Guide (DS50002027)
This user’s guide is a comprehensive guide that describes installation and features
of Microchip’s MPLAB X Integrated Development Environment (IDE), as well as the
editor and simulator functions in the MPLAB X IDE environment. Please visit
www.microchip.com/mplabx for more information.
Readme Files
For the latest information on using other tools, read the tool-specific Readme files in
the Readme subdirectory of the MPLAB X IDE installation directory. The Readme files
contain updated information and known issues that may not be included in this user’s
guide.
MPLAB® XC16 Assembler, Linker and Utilities User’s Guide (DS52106)
This user’s guide describes how to use GNU language tools to write code for 16-bit
applications.
MPLAB® XC16 C Compiler User’s Guide (DS50002071)
This user’s guide describes how to use the 16-bit MPLAB XC16 C Compiler. Please
visit www.microchip.com/compilers for more information.
dsPIC® DSC Signal Board User’s Guide (DS50002263)
This user’s guide describes how to use Microchip’s dsPIC DSC Signal Board.
dsPIC33EV256GM106 5V Motor Control Plug-In Module (PIM) Information
Sheet (DS50002225)
This information sheet provides information specific to the dsPIC33EV256GM106 5V
Motor Control Plug-In Module (PIM).
dsPIC33EP512GM710 Plug-In Module (PIM) Information Sheet for Single-Dual
Motor Control (DS50002216)
This information sheet provides information specific to the dsPIC33EP512GM710
Plug-In Module (PIM) for Single-Dual Motor Control.
AN1299, Single-Shunt Three-Phase Current Reconstruction Algorithm for
Sensorless FOC of a PMSM (DS01299)
AN1160, Sensorless BLDC Control with Back-EMF Filtering Using a
Majority Function (DS01160)
AN1078, Sensorless Field Oriented Control of a PMSM (DS01078)
AN1292, “Sensorless Field Oriented Control (FOC) for a Permanent
Magnet Synchronous Motor (PMSM) Using a PLL Estimator and
Field Weakening (FW) (DS01292)
AN1017, Sinusoidal Control of PMSM Motors with dsPIC30F DSC (DS01017)
DS50002261A-page 10
2014 Microchip Technology Inc.
Preface
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at http://www.microchip.com. This
web site makes files and information easily available to customers. Accessible by most
Internet browsers, the web site contains the following information:
• Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software
• General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listings
• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listings of seminars and events; and listings of Microchip sales
offices, distributors and factory representatives
DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE
Microchip’s customer notification service helps keep customers current on Microchip
products. Subscribers will receive e-mail notification whenever there are changes,
updates, revisions or errata related to a specified product family or development tool of
interest.
To register, access the Microchip web site at www.microchip.com, click on Customer
Change Notification and follow the registration instructions.
The Development Systems product group categories are:
• Compilers – The latest information on Microchip C compilers and other language
tools
• Emulators – The latest information on the Microchip in-circuit emulator,
MPLAB REAL ICE™
• In-Circuit Debuggers – The latest information on the Microchip in-circuit
debugger, MPLAB ICD 3
• MPLAB X IDE – The latest information on Microchip MPLAB X IDE, the
Windows® Integrated Development Environment for development systems tools
• Programmers – The latest information on Microchip programmers including the
PICkit™ 3 development programmer
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
•
•
•
•
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.
Technical support is available through the web site at: http://support.microchip.com
2014 Microchip Technology Inc.
DS50002261A-page 11
Motor Control 10-24V Driver Board (Dual/Single)
DOCUMENT REVISION HISTORY
Revision A (April 2014)
This is the initial release of this document.
DS50002261A-page 12
2014 Microchip Technology Inc.
MOTOR CONTROL 10-24V
DRIVER BOARD (DUAL/SINGLE)
USER’S GUIDE
Chapter 1. Introduction
1.1
OVERVIEW
The Motor Control 10-24V Driver Board (Dual/Single) is a low-voltage, dual motor
control power stage, targeted to drive two Brushless DC (BLDC) motors or Permanent
Magnet Synchronous Motors (PMSMs) concurrently.
The Motor Control 10-24V Driver Board (Dual/Single), along with the compatible dsPIC®
DSC Signal Board, provides a software development platform to build and evaluate
embedded motor control application software using Microchip’s
high-performance motor control Digital Signal Controllers (DSCs) and
Microcontrollers (MCUs).
1.2
MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE) FEATURES
The Motor Control 10-24V Driver Board (Dual/Single) is shown in Figure 1-1. The board
includes these key features:
• Two PMSM/BLDC motor control power stages with electrical specifications:
- Input DC voltage: 10-24V DC ±10% (9V-26.4V DC)
- Output phase RMS current: 10A nominal @ +25ºC per phase
• MCP8024 gate drivers with undervoltage, overvoltage, overcurrent, shoot-through
and short-circuit protection
• Hall sensors/Quadrature Encoder Interface (QEI) in each motor control stage to
enable sensor-based motor control algorithms
• Phase voltage and reconstructed neutral feedback signals in each motor control
stage to enable sensorless BLDC operation
• DC bus current sense resistor for overcurrent protection, torque control of the
BLDC motor and single-shunt Field Oriented Control (FOC) of PMSMs
• Phase current sensing resistors for Field Oriented Control
• DC bus voltage sensing
• Dynamic braking chopper circuit with hardware and software brake control for
both the inverter stages
• Overcurrent protection
• LED indication for PWM signals and Power-on Status
2014 Microchip Technology Inc.
DS50002261A-page 13
Motor Control 10-24V Driver Board (Dual/Single)
FIGURE 1-1:
MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE)
The block diagram of the Motor Control 10-24V Driver Board (Dual/Single) is shown in
Figure 1-2. For more information on electrical specifications, see Appendix B. “Electrical
Specifications”.
DS50002261A-page 14
2014 Microchip Technology Inc.
BLOCK DIAGRAM
FIGURE 1-2:
BLOCK DIAGRAM OF THE MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE)
MCP8024
+12V LDO
Amplified
Current O/Ps
Communication
Inverter – B
Section
MCP8024
DE2
Communication
+5V LDO
+5V LDO
+12V LDO
Protection Circuit
DE2
Communication
Three Operational Amplifiers and
One Comparator
Three Half-Bridge Drivers
Three Half-Bridge Drivers
DC Voltage
Sense
Amplifier – 3rd
Phase Current
Three-Phase Inverter Bridge
Three-Phase Inverter Bridge
Phase and Bus Current Sensing
Phase and Bus Current Sensing
3˜
VDC_A
Motor
Connector
I/P Supply
Connector
VDC_A (9V-26.4V)
+12V LDO
+12V
I/P Supply
Connector
DC+
(9V-26.4V)
Input
Jack
VDC_B
I/P Supply
Connector
Brake Current
Sense Circuit
3˜
Motor
Connector
VDC_B (9V-26.4V)
Hardware
Brake Enable
Circuit
Driver and
Brake Switch
Introduction
DS50002261A-page 15
Load Resistor
Brake Current
Sense Circuit
Driver and
Brake Switch
Hall Sensor/
Quadrature
Encoder
Interface
Dynamic Brake
Circuit – B
Dynamic Brake
Circuit – A
Hardware
Brake Enable
Circuit
VREF_EXT
Three-Phase
Back-EMFs and
Recreated
Neutral
Protection Circuit
Three Operational Amplifiers and
One Comparator
Amplifier – 3rd
Phase Current
AVDD
Load Resistor
DC Voltage
Sense
Fault Generation
Logic
DVDD
Current Shunt
Feedbacks
Three-Phase
Back-EMFs and
Recreated
Neutral
Inverter – A
Section
PWMS
Hall Sensor/
Quadrature
Encoder
Interface
Chip Enable
DC+
Communication
+5V
PWMs
Chip Enable
120-Pin Signal Board Interface Connector, J13
Current Shunt Feedbacks
2014 Microchip Technology Inc.
1.3
Motor Control 10-24V Driver Board (Dual/Single)
NOTES:
DS50002261A-page 16
2014 Microchip Technology Inc.
MOTOR CONTROL 10-24V
DRIVER BOARD (DUAL/SINGLE)
USER’S GUIDE
Chapter 2. Board Interface Description
2.1
INTRODUCTION
This chapter provides a more detailed description of the input and output interfaces of
the Motor Control 10-24V Driver Board (Dual/Single).
2.2
HIGHLIGHTS
This chapter covers the following topics:
• Board Connectors
• User Interface Hardware
The input power supply for powering the gate drivers, inverters and other control
circuits on the board, must be in the range of 10-24V DC ±10%.
2.3
BOARD CONNECTORS
The Motor Control 10-24V Driver Board (Dual/Single) has various connectors, jumpers
and LED indications. The on-board connectors are provided in Table 2-1 and are
shown in Figure 2.3.
TABLE 2-1:
Designator
MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE)
CONNECTORS
Description
J1
Input DC Power Supply Connector for Inverter A
J2
Hall Sensor/Quadrature Encoder Interface Connector for Motor A
J4
Hall Sensor/Quadrature Encoder Interface Connector for Motor B
J5,J8
Input DC Power Supply Connector
J6
Input DC Power Supply Connector for Inverter B
J7
Inverter A Three-Phase Output Connector
J9
Inverter B Three-Phase Output Connector
J10, J11, J12
MCP8024 (U8) Operational Amplifier Interface Connector
J13
dsPIC® DSC Signal Board Interface Connector
J15
Auxiliary Power Supply Output Connectors for +5V, DVDD, AVDD,
AGND, DGND
J16
+12V LDO (U11) Output Connector
TP46-TP47
Terminals to Connect Brake Resistor on Inverter A Side
TP51-TP52
Terminals to Connect Brake Resistor on Inverter B Side
2014 Microchip Technology Inc.
DS50002261A-page 17
Motor Control 10-24V Driver Board (Dual/Single)
FIGURE 2-1:
MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE) CONNECTORS
J13
J15
J2
J4
J12
J11
J10
J16
TP51-TP52
TP46-TP47
J8
J1
J5
J6
J9
J7
The following are the on-board connectors:
•
•
•
•
•
•
•
DS50002261A-page 18
Power Supply Connectors (J5, J8, J1 and J6)
Inverter Output Connectors (J7, J9)
Signal Board Interface Connector (J13)
Hall Sensor/Quadrature Encoder Interface Connectors (J2, J4)
Terminals for Brake Resistors (TP46-TP47, TP51-TP52)
Auxiliary Power Supply Output Connectors (J15, J16)
MCP8024 (U8) Operational Amplifier Interface Connectors (J10, J11, J12)
2014 Microchip Technology Inc.
Board Interface Description
2.3.1
Power Supply Connectors (J5, J8, J1 and J6)
The Motor Control 10-24V Driver Board (Dual/Single) is designed to operate in the DC
voltage range of 9-26.4V. The possible input DC power supply connections are shown
in Figure 2-2.
FIGURE 2-2:
J8
INPUT DC POWER SUPPLY CONNECTORS
DC+
Jumper
J1
VDC_A
J13
TP3
PGND
TP6
Populated By Default
Jumper
VDC_B
J5
Signal Board
Interface Connector
PGND
J6
PGND
DC+
TP7
TP8
Populated By Default
PGND
PGND
If the wire jumpers between TP3-TP6 and TP7-TP8 are populated, Inverter A and
Inverter B can be powered by a common voltage source, DC+, connected to either the
coaxial plug, J5, or to the connector, J8. The voltage source, DC+, supplies power to the
dsPIC DSC Signal Board through the signal board interface connector, J13. Connector,
J5, can carry current up to 2.5A and connector, J8, can carry current up to 30A.
Note:
On the Motor Control 10-24V Driver Board (Dual/Single),TP3-TP6 and
TP7-TP8 wire jumpers are populated by default.
Both the Inverter A and Inverter B sections on the Motor Control 10-24V Driver Board
(Dual/Single) can be powered independently by different voltage sources, such as
VDC_A and VDC_B. Inverter A can be powered up by different voltage sources connected to connector, J1, if a wire jumper between TP3-TP6 is disconnected. Similarly,
Inverter B can be powered up by different voltage sources connected to connector, J6,
if a wire jumper between TP7-TP8 is disconnected. Connectors, J1 and J6, can carry
the maximum current of 15A each. If both the jumpers, TP3-TP6 and TP7-TP8, are
opened, then the dsPIC DSC Signal Board is powered from the connector, J5 or J8.
Input power supply configuration is shown in Table 2-2.
TABLE 2-2:
INPUT POWER SUPPLY CONFIGURATION
Wire Jumper Configuration
TP3-TP6
TP7-TP8
Power Supply Connectors
Inverter A
Section
Inverter B
Section
Connected
Connected
J5/J8 (DC+)
Disconnected
Connected
J1 (VDC_A)
J5/J8
Connected
Disconnected
J5/J8
J6 (VDC_B)
Disconnected
Disconnected
J1 (VDC_A)
J6 (VDC_B)
2014 Microchip Technology Inc.
Signal Board
J5/J8 (DC+)
J5/J8
DS50002261A-page 19
Motor Control 10-24V Driver Board (Dual/Single)
2.3.2
Inverter Output Connectors (J7, J9)
The Motor Control 10-24V Driver Board (Dual/Single) can drive two three-phase
PMSM/BLDC motors. These motors are driven through Inverter A and Inverter B outputs from connectors, J7 and J9. The pin assignments for connectors, J7 and J9, are
provided in Table 2-3 and Table 2-4.
TABLE 2-3:
INVERTER A OUTPUT CONNECTOR (J7)
Pin #
Signal Name
Pin Description
1
PHASE3_MA
Phase 3 Output of Inverter A
2
PHASE2_MA
Phase 2 Output of Inverter A
3
PHASE1_MA
Phase 1 Output of Inverter A
TABLE 2-4:
INVERTER B OUTPUT CONNECTOR (J9)
Pin #
Signal Name
Pin Description
1
PHASE3_MB
Phase 3 Output of Inverter B
2
PHASE2_MB
Phase 2 Output of Inverter B
3
PHASE1_MB
Phase 1 Output of Inverter B
2.3.3
Signal Board Interface Connector (J13)
The signal board interface connector, J13, is used to interface the Motor Control 10-24V
Driver Board (Dual/Single) to the dsPIC DSC Signal Board. The signal board interface
connector, J13, has three rows and each row has 40 pins. The signals on the
connector, J13, can be grouped into the following function sets:
• Control Signals to the Motor Control 10-24V Driver Board (Dual/Single) for each
Inverter:
- Three pairs of PWMH/L signals
- Braking chopper circuit control signal
• Feedback Signals from the Motor Control 10-24V Driver Board (Dual/Single) for
each Inverter:
- Current shunt feedbacks
- DC bus voltage and current feedback
- Three-phase back-EMF signals and recreated neutral signals
- Hall Sensor/Quadrature Encoder Interface (QEI) sensor feedbacks
- Fault signals
• Power Supply Signals to Signal Board:
- Input DC power signal, DC+, and power ground
• Power Supply Signals from Signal Board:
- Auxiliary power supply signals, DVDD, +5V, DGND, AVDD and AGND
- DC bias voltage (VREF_EXT) signal to offset op amp outputs by a fixed
DC voltage and this potential is referenced to AGND
• Signal Interface between Gate Driver and Microcontroller for each Inverter:
- Chip enable signal from microcontroller
- UART RX and TX to establish DE2 communication between controller and the
MCP8024 gate driver
Connector, J13, pin function and pin mapping to the mate connector on the signal
board are provided in Table 2-5 and Table 2-6. In Table 2-5, J13 pins are tabulated in
order of their number, whereas in Table 2-6, signals on connector, J13, are grouped
according to their functionality.
DS50002261A-page 20
2014 Microchip Technology Inc.
Board Interface Description
TABLE 2-5:
SIGNAL BOARD INTERFACE CONNECTOR (J13)
On-Board
J13
Connector
Pin #
Mating
Connector
Pin #(1)
Signal Name
Pin Function
Signal Type
A1
A40
DVDD
+3.3V or +5V Digital Power Supply from dsPIC®
DSC Signal Board(2)
Power Supply
B1
B40
DVDD
+3.3V or +5VDigital Power Supply from dsPIC
DSC Signal Board(2)
Power Supply
C1
C40
DVDD
+3.3V or +5V Digital Power Supply from dsPIC
DSC Signal Board(2)
Power Supply
A2
A39
DGND
Digital Ground
Ground
B2
B39
DGND
Digital Ground
Ground
C2
C39
DGND
Digital Ground
Ground
A3
A38
VPHASE1_MB
B3
B38
—
C3
C38
DGND
A4
A37
—
—
—
B4
B37
FAULT_AB
Inverter A and Inverter B Combined Fault Output
generated by Fault Generation Logic Circuit
Digital Output
C4
C37
VPHASE2_MB
Phase 2 BEMF Voltage Feedback of Motor B
Analog Output
A5
A36
VPHASE1_MA
Phase 1 BEMF Voltage Feedback of Motor A
Analog Output
Phase 1 BEMF Voltage Feedback of Motor B
—
Analog Output
—
Digital Ground
Ground
B5
B36
VPHASE2_MA
Phase 2 BEMF Voltage Feedback of Motor A
Analog Output
C5
C36
VPHASE3_MA
Phase 3 BEMF Voltage Feedback of Motor A
Analog Output
A6
A35
VPHASE3_MB
Phase 3 BEMF Voltage Feedback of Motor B
Analog Output
B6
B35
RECN_MA,
IPHASE3_MA,
IBRAKE_A
Recreated Neutral Feedback for Motor A or
Inverter A Phase 3 Current Feedback, or Braking
Chopper Circuit – A Current Sense Output
Analog Output
C6
C35
—
A7
A34
VREF_EXT
B7
B34
—
—
—
C7
C34
—
—
—
A8
A33
—
—
—
—
+1.65V/+2.5V Voltage Reference to Shift
Op Amp Outputs(4)
—
Analog Output
B8
B33
—
—
—
C8
C33
—
—
—
A9
A32
—
B9
B32
VBUS_A
C9
C32
—
—
—
A10
A31
—
—
—
—
DC Bus Feedback of Inverter A
—
Analog Output
B10
B31
—
—
—
C10
C31
—
—
—
Note 1:
2:
3:
4:
The mating connector pin refers to the mating connector on the dedicated signal board interfaced to the
Motor Control 10-24V Driver Board (Dual/Single).
On the dsPIC® DSC Signal Board, the DVDD voltage level is configured as either +3.3V or +5V by the PIM
plugged into the board.
On the dsPIC DSC Signal Board, the AVDD voltage level is configured as either +3.3V or +5V by the PIM
plugged into the board.
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as either +1.65 or +2.5V by the
PIM plugged into the board.
2014 Microchip Technology Inc.
DS50002261A-page 21
Motor Control 10-24V Driver Board (Dual/Single)
TABLE 2-5:
SIGNAL BOARD INTERFACE CONNECTOR (J13) (CONTINUED)
On-Board
J13
Connector
Pin #
Mating
Connector
Pin #(1)
Signal Name
A11
A30
DGND
Digital Ground
Ground
B11
B30
DGND
Digital Ground
Ground
C11
C30
DGND
A12
A29
RECN_MB,
IPHASE3_MB,
IBRAKE_B
Recreated Neutral Feedback for Motor B or
Inverter B Phase 3 Current Feedback, or Braking
Chopper Circuit – B Current Sense Output
Analog Output
B12
B29
DE2_RX_B
UART RX from Microcontroller to establish DE2
Communication with MCP8024 (U9)
Digital Output
C12
C29
—
—
—
A13
A28
—
B13
B28
HALLC_MA
Hall Sensor C/INDEX Feedback from Motor A
Digital Output
C13
C28
HALLB_MA
Hall Sensor B/QEB Feedback from Motor A
Digital Output
A14
A27
—
Pin Function
Signal Type
Digital Ground
Ground
—
—
—
—
B14
B27
—
—
—
C14
C27
—
—
—
A15
A26
IBUS_MB
B15
B26
DE2_TX_B
Bus Current Feedback of Inverter B
Analog Output
C15
C26
BRAKE_EN_B
A16
A25
—
B16
B25
IPHASE2_MB
Inverter B Phase 2 Current Feedback
Analog Output
C16
C25
IPHASE1_MB
Inverter B Phase 1 Current Feedback
Analog Output
A17
A24
BRAKE_EN_A
Software Brake Enable Signal for Braking
Chopper Circuit – A
UART TX from Microcontroller to establish DE2
Communication with MCP8024 (U9)
Digital Input
Software Brake Enable Signal for Braking
Chopper Circuit – B
Digital Input
—
—
Digital Input
B17
B24
—
—
—
C17
C24
—
—
—
A18
A23
—
—
—
B18
B23
—
—
—
C18
C23
HOME_MA
A22
B19
B22
SHUNT_LOW_SUM_A Inverter A Bus Current Shunt (Rsh5) Negative
Terminal
Analog Output
C19
C22
SHUNT_HIGH_SUM_A Inverter A Bus Current Shunt (Rsh5) Positive
Terminal
Analog Output
2:
3:
4:
—
Digital Output
A19
Note 1:
—
Quadrature Encoder Interface HOME Signal
from Motor A
—
The mating connector pin refers to the mating connector on the dedicated signal board interfaced to the
Motor Control 10-24V Driver Board (Dual/Single).
On the dsPIC® DSC Signal Board, the DVDD voltage level is configured as either +3.3V or +5V by the PIM
plugged into the board.
On the dsPIC DSC Signal Board, the AVDD voltage level is configured as either +3.3V or +5V by the PIM
plugged into the board.
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as either +1.65 or +2.5V by the
PIM plugged into the board.
DS50002261A-page 22
2014 Microchip Technology Inc.
Board Interface Description
TABLE 2-5:
SIGNAL BOARD INTERFACE CONNECTOR (J13) (CONTINUED)
On-Board
J13
Connector
Pin #
Mating
Connector
Pin #(1)
Signal Name
A20
A21
FAULT_MA
Inverter A Bus Current Fault Output from
Signal Board
Digital Output
B20
B21
DE2_RX_A
UART RX from Microcontroller to establish DE2
Communication with MCP8024
Digital Output
C20
C19
—
—
—
A21
A20
DGND
Digital Ground
Ground
B21
B20
DGND
Digital Ground
Ground
C21
C20
DGND
Digital Ground
A22
A19
—
B22
B19
C22
C21
—
—
—
A23
A18
—
—
—
B23
B18
SHUNT_HIGH_1_A
Inverter A Phase 1 Current Shunt (Rsh7)
Positive Terminal
Analog Output
C23
C18
SHUNT_HIGH_2_A
Inverter A Phase 2 Current Shunt (Rsh1)
Positive Terminal
Analog Output
A24
A17
—
—
—
B24
B17
DE2_TX_A
UART TX from Microcontroller to establish DE2
Communication with MCP8024
Digital Input
C24
C17
—
A25
A16
HALLA_MA
B25
B16
VBUS_B
C25
C16
—
A26
A15
—
B26
B15
CE_A
C26
C15
A27
A14
—
—
—
B27
B14
—
—
—
C27
C14
—
—
—
A13
CE_B
B13
HOME_MB
C28
C13
—
3:
4:
Ground
—
—
Analog Output
—
—
Hall Sensor A/QEA Feedback from Motor A
Digital Output
DC Bus Feedback of Inverter B
Analog Output
—
—
—
—
Chip Enable Signal to MCP8024 (U8)
Digital Input
SHUNT_HIGH_SUM_A Inverter A Phase 1 Current Shunt (Rsh7)
Negative Terminal
B28
2:
Signal Type
SHUNT_HIGH_SUM_A Inverter A Phase 2 Current Shunt (Rsh1)
Negative Terminal
A28
Note 1:
Pin Function
Analog Output
Chip Enable Signal to MCP8024 (U9)
Digital Input
Quadrature Encoder Interface HOME Signal of
Motor B
—
Digital Output
—
The mating connector pin refers to the mating connector on the dedicated signal board interfaced to the
Motor Control 10-24V Driver Board (Dual/Single).
On the dsPIC® DSC Signal Board, the DVDD voltage level is configured as either +3.3V or +5V by the PIM
plugged into the board.
On the dsPIC DSC Signal Board, the AVDD voltage level is configured as either +3.3V or +5V by the PIM
plugged into the board.
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as either +1.65 or +2.5V by the
PIM plugged into the board.
2014 Microchip Technology Inc.
DS50002261A-page 23
Motor Control 10-24V Driver Board (Dual/Single)
TABLE 2-5:
SIGNAL BOARD INTERFACE CONNECTOR (J13) (CONTINUED)
On-Board
J13
Connector
Pin #
Mating
Connector
Pin #(1)
Signal Name
A29
A12
PWM1L_A
PWM for Inverter A Phase 1 Bottom
MOSFET Control
Hall Sensor C/INDEX Feedback of Motor B
Pin Function
Signal Type
Digital Input
B29
B12
HALLC_MB
C29
C12
—
A30
A11
HALLA_MB
Hall Sensor A/QEA Feedback of Motor B
Digital Output
B30
B11
HALLB_MB
Hall Sensor B/QEB Feedback of Motor B
Digital Output
C30
C11
PWM1H_A
PWM for Inverter A Phase 1 Top
MOSFET Control
A31
A10
DGND
Digital Ground
Ground
B31
B10
DGND
Digital Ground
Ground
C31
C10
DGND
Digital Ground
Ground
A32
A9
PWM2H_A
PWM for Inverter A Phase 2 Top
MOSFET Control
Digital Input
B32
B9
PWM2L_A
PWM for Inverter A Phase 2 Bottom
MOSFET Control
Digital Input
C32
C9
—
A33
A8
PWM3H_A
—
Digital Output
—
Digital Input
—
—
PWM for Inverter A Phase 3 Top
MOSFET Control
Digital Input
B33
B8
—
C33
C8
PWM3L_A
PWM for Inverter A Phase 3 Bottom
MOSFET Control
Digital Input
A34
A7
PWM2L_B
PWM for Inverter B Phase 2 Bottom
MOSFET Control
Digital Input
B34
B7
PWM1L_B
PWM for Inverter B Phase 1 Bottom
MOSFET Control
Digital Input
C34
C7
PWM1H_B
PWM for Inverter B Phase 1 Top
MOSFET Control
Digital Input
A35
A6
PWM3H_B
PWM for Inverter B Phase 3 Top
MOSFET Control
Digital Input
B35
B6
PWM3L_B
PWM for Inverter B Phase 3 Bottom
MOSFET Control
Digital Input
C35
C6
PWM2H_B
PWM for Inverter B Phase 2 Top
MOSFET Control
Digital Input
A36
A5
—
—
—
B36
B5
—
—
—
C36
C5
FAULT_MB
Note 1:
2:
3:
4:
—
—
Inverter B Bus Current Fault Output to
Microcontroller on Signal Board
Digital Input
The mating connector pin refers to the mating connector on the dedicated signal board interfaced to the
Motor Control 10-24V Driver Board (Dual/Single).
On the dsPIC® DSC Signal Board, the DVDD voltage level is configured as either +3.3V or +5V by the PIM
plugged into the board.
On the dsPIC DSC Signal Board, the AVDD voltage level is configured as either +3.3V or +5V by the PIM
plugged into the board.
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as either +1.65 or +2.5V by the
PIM plugged into the board.
DS50002261A-page 24
2014 Microchip Technology Inc.
Board Interface Description
TABLE 2-5:
SIGNAL BOARD INTERFACE CONNECTOR (J13) (CONTINUED)
On-Board
J13
Connector
Pin #
Mating
Connector
Pin #(1)
Signal Name
A37
A4
AVDD
+3.3V or +5V Analog Power Supply from
Signal Board(3)
Power Supply
B37
B4
AVDD
+3.3V or +5V Analog Power Supply from
Signal Board(3)
Power Supply
C37
C4
AGND
Analog Ground
A38
A3
+5V
+5V Digital Power Supply from Signal Board
Power Supply
B38
B3
+5V
+5V Digital Power Supply from Signal Board
Power Supply
C38
C3
AGND
Analog Ground
Ground
A39
A2
PGND
Power Ground
Ground
B39
B2
PGND
Power Ground
Ground
C39
C2
PGND
Power Ground
Ground
A40
A1
DC+
DC Supply (10-24V) from Power Board to
Signal Board
Power Supply
B40
B1
DC+
DC Supply (10-24V) from Power Board to
Signal board
Power Supply
C40
C1
DC+
DC Supply (10-24V) from Power Board to
Signal Board
Power Supply
Note 1:
2:
3:
4:
Pin Function
Signal Type
Ground
The mating connector pin refers to the mating connector on the dedicated signal board interfaced to the
Motor Control 10-24V Driver Board (Dual/Single).
On the dsPIC® DSC Signal Board, the DVDD voltage level is configured as either +3.3V or +5V by the PIM
plugged into the board.
On the dsPIC DSC Signal Board, the AVDD voltage level is configured as either +3.3V or +5V by the PIM
plugged into the board.
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as either +1.65 or +2.5V by the
PIM plugged into the board.
2014 Microchip Technology Inc.
DS50002261A-page 25
Motor Control 10-24V Driver Board (Dual/Single)
TABLE 2-6:
On-Board
J13
Connector
Pin #
SIGNAL BOARD INTERFACE CONNECTOR (J13), GROUPED
BY FUNCTIONALITY
Mating
Connector
Pin #(1)
Signal Name
Pin Function
Signal Type
A. Power Supply Signals
A1
A40
DVDD
+3.3V or +5V Digital Power Supply from
Signal Board(2)
Power Supply
B1
B40
DVDD
+3.3V or 5V Digital Power Supply from
Signal Board(2)
Power Supply
C1
C40
DVDD
+3.3V or 5V Digital Power Supply from
Signal Board
Power Supply
A2
A39
DGND
Digital Ground
Ground
B2
B39
DGND
Digital Ground
Ground
C2
C39
DGND
Digital Ground
Ground
C3
C38
DGND
Digital Ground
Ground
A11
A30
DGND
Digital Ground
Ground
B11
B30
DGND
Digital Ground
Ground
C11
C30
DGND
Digital Ground
Ground
A21
A20
DGND
Digital Ground
Ground
B21
B20
DGND
Digital Ground
Ground
C21
C20
DGND
Digital Ground
Ground
A31
A10
DGND
Digital Ground
Ground
B31
B10
DGND
Digital Ground
Ground
C31
C10
DGND
Digital Ground
Ground
A37
A4
AVDD
+3.3V or +5V Analog Power Supply from Signal Power Supply
Board(3)
B37
B4
AVDD
+3.3V or +5V Analog Power Supply from Signal Power Supply
Board(3)
C37
C4
AGND
Analog Ground
A38
A3
+5V
Ground
+5V Digital Power Supply from Signal Board
Power Supply
+5V Digital Power Supply from Signal Board
Power Supply
B38
B3
+5V
C38
C3
AGND
Analog Ground
Ground
A39
A2
PGND
Power Ground
Ground
B39
B2
PGND
Power Ground
Ground
C39
C2
PGND
Power Ground
A40
A1
DC+
DC Supply (10-24V) from Power Board to
Signal Board
Power Supply
B40
B1
DC+
DC Supply (10-24V) from Power Board to
Signal Board
Power Supply
C40
C1
DC+
DC Supply (10-24V) from Power Board to
Signal Board
Power Supply
Note 1:
2:
3:
4:
Ground
The mating connector pin refers to the mating connector on the dedicated signal board interfaced to the
Motor Control 10-24V Driver Board (Dual/Single).
On the dsPIC® DSC Signal Board, the DVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the AVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as either +1.65 or +2.5V by
the PIM plugged into the board.
DS50002261A-page 26
2014 Microchip Technology Inc.
Board Interface Description
TABLE 2-6:
On-Board
J13
Connector
Pin #
SIGNAL BOARD INTERFACE CONNECTOR (J13), GROUPED
BY FUNCTIONALITY (CONTINUED)
Mating
Connector
Pin #(1)
Signal Name
Pin Function
Signal Type
B. Signals to and from Inverter A Section
B.1 PWM Signals
C30
C11
PWM1H_A
PWM for Inverter A Phase 1 Top
MOSFET Control
Digital Input
A29
A12
PWM1L_A
PWM for Inverter A Phase 1 Bottom
MOSFET Control
Digital Input
A32
A9
PWM2H_A
PWM for Inverter A Phase 2 Top
MOSFET Control
Digital Input
B32
B9
PWM2L_A
PWM for Inverter A Phase 2 Bottom
MOSFET Control
Digital Input
A33
A8
PWM3H_A
PWM for Inverter A Phase 3 Top
MOSFET Control
Digital Input
C33
C8
PWM3L_A
PWM for Inverter A Phase 3 Bottom
MOSFET Control
Digital Input
A17
A24
BRAKE_EN_A
Software Brake Enable Signal for Braking
Chopper Circuit – A
Digital Input
B.2 Interface Signals between Microcontroller and Gate Driver, MCP8024 (U8)
B26
B15
CE_A
Chip Enable Signal to MCP8024 (U8)
Digital Input
B24
B17
DE2_TX_A
UART TX from Microcontroller to establish DE2
Communication with MCP8024
Digital Input
B20
B21
DE2_RX_A
UART RX from Microcontroller to establish
DE2 Communication with MCP8024
Digital Output
B.3 Hall Sensor/Quadrature Encoder Interface Feedback Signals from Motor A
A25
A16
C13
C28
B13
B28
C18
C23
HOME_MA
Note 1:
2:
3:
4:
HALLA_MA
Hall Sensor A/QEA Feedback from Motor A
Digital Output
HALLB_MA
Hall Sensor B/QEB Feedback from Motor A
Digital Output
HALLC_MA
Hall Sensor C/INDEX Feedback from Motor A
Digital Output
Quadrature Encoder Interface HOME Signal
from Motor A
Digital Output
The mating connector pin refers to the mating connector on the dedicated signal board interfaced to the
Motor Control 10-24V Driver Board (Dual/Single).
On the dsPIC® DSC Signal Board, the DVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the AVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as either +1.65 or +2.5V by
the PIM plugged into the board.
2014 Microchip Technology Inc.
DS50002261A-page 27
Motor Control 10-24V Driver Board (Dual/Single)
TABLE 2-6:
On-Board
J13
Connector
Pin #
SIGNAL BOARD INTERFACE CONNECTOR (J13), GROUPED
BY FUNCTIONALITY (CONTINUED)
Mating
Connector
Pin #(1)
Signal Name
Pin Function
Signal Type
B.4 Voltage and Current Feedback Signals
A5
A36
VPHASE1_MA
Phase 1 Voltage Feedback of Motor A
Analog Output
B5
B36
VPHASE2_MA
Phase 2 Voltage Feedback of Motor A
Analog output
C5
C36
VPHASE3_MA
Phase 3 Voltage Feedback of Motor A
Analog Output
B6
B35
RECN_MA,
IPHASE3_MA,
IBRAKE_A
Recreated Neutral Feedback for Motor A or
Analog Output
Inverter A Phase 3 Current Feedback, or Braking
Chopper Circuit – A Current Sense Output
B23
B18
SHUNT_HIGH_1_A
C26
C15
C23
C18
B22
Inverter A Phase 1 Current Shunt (Rsh7)
Positive Terminal
Analog Output
SHUNT_HIGH_SUM_A Inverter A Phase 1 Current Shunt (Rsh7)
Negative Terminal
Analog Output
Inverter A Phase 2 Current Shunt (Rsh1)
Positive Terminal
Analog Output
B19
SHUNT_HIGH_SUM_A Inverter A Phase 2 Current Shunt (Rsh1)
Negative Terminal
Analog Output
C19
C22
SHUNT_HIGH_SUM_A Inverter A bus Current Shunt (Rsh5)
Positive Terminal
Analog Output
B19
B22
SHUNT_LOW_SUM_A Inverter A bus Current Shunt (Rsh5)
Negative Terminal
Analog Output
B9
B32
SHUNT_HIGH_2_A
VBUS_A
DC Bus Feedback of Inverter A
Analog Output
C. Signals to and from Inverter B Section
C.1 PWM Signals
C34
C7
PWM1H_B
PWM for Inverter B Phase 1 Top
MOSFET Control
Digital Input
B34
B7
PWM1L_B
PWM for Inverter B Phase 1 Bottom
MOSFET Control
Digital Input
C35
C6
PWM2H_B
PWM for Inverter B Phase 2 Top
MOSFET Control
Digital Input
A34
A7
PWM2L_B
PWM for Inverter B Phase 2 Bottom
MOSFET Control
Digital Input
A35
A6
PWM3H_B
PWM for Inverter B Phase 3 Top
MOSFET Control
Digital Input
B35
B6
PWM3L_B
PWM for Inverter B Phase 3 Bottom
MOSFET Control
Digital Input
C15
C26
BRAKE_EN_B
Software Brake Enable Signal for Braking
Chopper Circuit – B
Digital Input
Note 1:
2:
3:
4:
The mating connector pin refers to the mating connector on the dedicated signal board interfaced to the
Motor Control 10-24V Driver Board (Dual/Single).
On the dsPIC® DSC Signal Board, the DVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the AVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as either +1.65 or +2.5V by
the PIM plugged into the board.
DS50002261A-page 28
2014 Microchip Technology Inc.
Board Interface Description
TABLE 2-6:
On-Board
J13
Connector
Pin #
SIGNAL BOARD INTERFACE CONNECTOR (J13), GROUPED
BY FUNCTIONALITY (CONTINUED)
Mating
Connector
Pin #(1)
Signal Name
Pin Function
Signal Type
C.2 Interface Signals between Microcontroller and Gate Driver, MCP8024 (U9)
A28
A13
CE_B
Chip Enable Signal to MCP8024 (U9)
Digital Input
B15
B26
DE2_TX_B
UART TX from Microcontroller to establish DE2
Communication with MCP8024 (U9)
Digital Input
B12
B29
DE2_RX_B
UART RX from Microcontroller to establish
DE2 Communication with MCP8024 (U9)
Digital Output
C.3 Hall Sensor/Quadrature Encoder Interface Feedback Signals from Motor B
A30
A11
HALLA_MB
Hall Sensor A/QEA Feedback of Motor B
Digital Output
B30
B11
HALLB_MB
Hall Sensor B/QEB Feedback of Motor B
Digital Output
B29
B12
HALLC_MB
Hall Sensor C/INDEX Feedback of Motor B
Digital Output
B28
B13
HOME_MB
Quadrature Encoder Interface HOME Signal of
Motor B
Digital Output
C.4 Voltage and Current Feedback Signals
A3
A38
VPHASE1_MB
Phase 1 BEMF Voltage Feedback of Motor B
Analog Output
C4
C37
VPHASE2_MB
Phase 2 BEMF Voltage Feedback of Motor B
Analog Output
Analog Output
A6
A35
VPHASE3_MB
Phase 3 BEMF Voltage Feedback of Motor B
A12
A29
RECN_MB,
IPHASE3_MB,
IBRAKE_B
Recreated Neutral Feedback for Motor B or
Analog Output
Inverter B Phase 3 Current Feedback, or Braking
Chopper Circuit – B Current Sense Output
C16
C25
IPHASE1_MB
Inverter B Phase 1 Current Feedback
B16
B25
IPHASE2_MB
Inverter B Phase 2 Current Feedback
Analog Output
A15
A26
IBUS_MB
Bus Current Feedback of Inverter B
Analog Output
B25
B16
VBUS_B
DC Bus Feedback of Inverter B
Analog Output
Analog Output
D. Others
D.1 Fault Signals
A20
A21
FAULT_MA
Inverter A Bus Current Fault Output from
Signal Board
Digital Output
C36
C5
FAULT_MB
Inverter B Bus Current Fault Output to
Microcontroller on Signal Board
Digital Input
B4
B37
FAULT_AB
Inverter A and Inverter B Combined Fault Output
generated by Fault Generation Logic Circuit
Digital Input
D.2 Voltage Offset
A7
Note 1:
2:
3:
4:
A34
VREF_EXT
+1.65V/+2.5VVoltage Reference to Shift
Op Amp Outputs(4)
Analog Input
The mating connector pin refers to the mating connector on the dedicated signal board interfaced to the
Motor Control 10-24V Driver Board (Dual/Single).
On the dsPIC® DSC Signal Board, the DVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the AVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as either +1.65 or +2.5V by
the PIM plugged into the board.
2014 Microchip Technology Inc.
DS50002261A-page 29
Motor Control 10-24V Driver Board (Dual/Single)
TABLE 2-6:
On-Board
J13
Connector
Pin #
SIGNAL BOARD INTERFACE CONNECTOR (J13), GROUPED
BY FUNCTIONALITY (CONTINUED)
Mating
Connector
Pin #(1)
Signal Name
Pin Function
Signal Type
E. Pins – Not Connected on Motor Control 10-24V Driver Board (Dual/Single)(2)
B3
B38
—
—
—
A4
A37
—
—
—
C6
C35
—
—
—
—
B7
B34
—
—
C7
C34
—
—
—
A8
A33
—
—
—
B8
B33
—
—
—
C8
C33
—
—
—
A9
A32
—
—
—
C9
C32
—
—
—
A10
A31
—
—
—
B10
B31
—
—
—
C10
C31
—
—
—
C12
C29
—
—
—
A13
A28
—
—
—
A14
A27
—
—
—
B14
B27
—
—
—
C14
C27
—
—
—
A16
A25
—
—
—
B17
B24
—
—
—
C17
C24
—
—
—
A18
A23
—
—
—
B18
B23
—
—
—
A19
A22
—
—
—
C20
C19
—
—
—
A22
A19
—
—
—
C22
C21
—
—
—
A23
A18
—
—
—
A24
A17
—
—
—
C24
C17
—
—
—
C25
C16
—
—
—
A15
—
—
—
A26
Note 1:
2:
3:
4:
The mating connector pin refers to the mating connector on the dedicated signal board interfaced to the
Motor Control 10-24V Driver Board (Dual/Single).
On the dsPIC® DSC Signal Board, the DVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the AVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as either +1.65 or +2.5V by
the PIM plugged into the board.
DS50002261A-page 30
2014 Microchip Technology Inc.
Board Interface Description
TABLE 2-6:
SIGNAL BOARD INTERFACE CONNECTOR (J13), GROUPED
BY FUNCTIONALITY (CONTINUED)
On-Board
J13
Connector
Pin #
Mating
Connector
Pin #(1)
Signal Name
Pin Function
Signal Type
A27
A14
—
—
—
B27
B14
—
—
—
C27
C14
—
—
—
C28
C13
—
—
—
C29
C12
—
—
—
C32
C9
—
—
—
B33
B8
—
—
—
A36
A5
—
—
—
B5
—
—
—
B36
Note 1:
2:
3:
4:
The mating connector pin refers to the mating connector on the dedicated signal board interfaced to the
Motor Control 10-24V Driver Board (Dual/Single).
On the dsPIC® DSC Signal Board, the DVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the AVDD voltage level can be configured as either +3.3V or +5V by the
PIM plugged into the board.
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as either +1.65 or +2.5V by
the PIM plugged into the board.
2014 Microchip Technology Inc.
DS50002261A-page 31
Motor Control 10-24V Driver Board (Dual/Single)
2.3.4
Hall Sensor/Quadrature Encoder Interface Connectors (J2, J4)
The Hall sensors or Quadrature Encoder Interfaces (QEIs) are used for determining the
motor position. Connectors, J2 and J4, can be used to interface the Hall Sensor/
Quadrature Encoder Interface of motors driven by Inverter A and Inverter B, respectively. The pin descriptions of connectors, J2 and J4, are shown in Table 2-7 and
Table 2-8.
TABLE 2-7:
HALL SENSOR/QUADRATURE ENCODER INTERFACE
CONNECTOR (J2)
Pin # Signal Name
1
+5V
Pin Description
Hall Sensors/QEI Power Supply
2
DGND
3
HALLA_MA
Digital Ground
Hall Sensor A/QEI Phase A Feedback for Motor A
4
HALLB_MA
Hall Sensor B/QEI Phase B Feedback for Motor A
5
HALLC_MA
Hall Sensor C/QEI INDEX Feedback for Motor A
6
HOME_MA
QEI HOME Signal Feedback for Motor A
TABLE 2-8:
Pin #
HALL SENSOR/QUADRATURE ENCODER INTERFACE
CONNECTOR (J4)
Signal Name
Pin Description
1
+5V
2
DGND
3
HALLA_MB
Hall Sensor A/QEI Phase A Feedback for Motor B
4
HALLB_MB
Hall Sensor B/QEI Phase B Feedback for Motor B
5
HALLC_MB
Hall Sensor C/QEI INDEX Feedback for Motor B
6
HOME_MB
QEI HOME Signal Feedback for Motor B
2.3.5
Hall Sensors/QEI Power Supply
Digital Ground
Terminals for Brake Resistors (TP46-TP47, TP51-TP52)
Brake resistors can be added to Braking Chopper Circuit of Inverter A and Inverter B
through terminals provided on the Motor Control 10-24V Driver Board (Dual/Single).
Table 2-7 and Table 2-10 provides the terminal pin-outs.
TABLE 2-9:
TERMINALS FOR BRAKE RESISTOR ON INVERTER A SIDE
Terminal # Terminal Name
1
TP46
Inverter A Brake Resistor Positive Terminal
2
TP47
Inverter A Brake Resistor Negative Terminal
TABLE 2-10:
TERMINALS FOR BRAKE RESISTOR ON INVERTER B SIDE
Terminal # Terminal Name
DS50002261A-page 32
Terminal Description
Terminal Description
1
TP51
Inverter B Brake Resistor Positive Terminal
2
TP52
Inverter B Brake Resistor Negative Terminal
2014 Microchip Technology Inc.
Board Interface Description
2.3.6
Auxiliary Power Supply Output Connectors (J15, J16)
Various auxiliary power supply outputs can be tapped through connectors, J15 and
J16. The auxiliary power supply outputs on connector, J15, are provided in Table 2-11
and Table 2-12 provides the power supply outputs on connector, J16.
TABLE 2-11:
Pin #
Signal
Name
1
DGND
AUXILIARY POWER SUPPLY OUTPUT CONNECTOR (J15)
Signal Description
Digital Ground
2
+5V
3
DVDD
+3.3V/+5V Digital Power Output
4
AGND
Analog Ground
5
AVDD
+3.3V/+5V Analog Power Output
TABLE 2-12:
+5V Digital Power Output
+12V LDO (U11) OUTPUT CONNECTOR (J16)
Pin #
Signal
Name
1
+12V
+12V Output of LDO U11 (L7812CD2T-TR)
2
PGND
Power Ground
2014 Microchip Technology Inc.
Signal Description
DS50002261A-page 33
Motor Control 10-24V Driver Board (Dual/Single)
2.3.7
MCP8024 (U8) Operational Amplifier Interface Connectors
(J10, J11, J12)
The three-phase BLDC motor gate driver with the power module, MCP8024, has three
internal operational amplifiers. These amplifiers can be configured as either inverting or
non-inverting, and are labeled as U8-A, U8-B and U8-C. Each of these amplifier inputs
and outputs are accessible through connectors, J10, J11 and J12 (see Figure A-1). The
inputs and output of the gate driver amplifiers, U8-A, U8-B and U8-C, are provided in
Table 2-13 through Table 2-15, respectively.
TABLE 2-13:
AMPLIFIER U8-A INPUT AND OUTPUT CONNECTOR (J12)
Pin #
Signal
Name
1
IN3+
Positive Input of U8-A Amplifier Circuit
2
IN3-
Negative Input of U8-A Amplifier Circuit
3
OUT3
TABLE 2-14:
Signal Description
U8-A Amplifier Output
AMPLIFIER U8-B INPUT AND OUTPUT CONNECTOR (J11)
Pin #
Signal
Name
1
IN2+
Positive Input of U8-B Amplifier Circuit
2
IN2-
Negative Input of U8-B Amplifier Circuit
3
OUT2
TABLE 2-15:
Pin #
Signal Description
U8-B Amplifier Output
AMPLIFIER U8-C INPUT AND OUTPUT CONNECTOR (J10)
Signal
Name
Signal Description
1
IN1-
Negative Input of U8-C Amplifier Circuit
2
IN1+
Positive Input of U8-C Amplifier Circuit
3
OUT1
U8-C Amplifier Output
By default, the U8-A, U8-B and U8-C amplifiers are configured as non-inverting buffers
with their non-inverting input connected to VREF_EXT (half of the amplifier supply
voltage) for low-power consumption. For circuit details, see Figure A-1.
DS50002261A-page 34
2014 Microchip Technology Inc.
Board Interface Description
2.4
USER INTERFACE HARDWARE
2.4.1
Board Jumpers
The Motor Control 10-24V Driver Board (Dual/Single) has three power jumpers and two
signal jumpers. The on-board jumpers are provided in Table 2-16. Figure 2-3 shows the
jumper positions.
TABLE 2-16:
BOARD JUMPERS
Jumper
Designator
FIGURE 2-3:
Jumper Description
JP2
Connects the chip enable signal of gate driver, IC U8, to +5 VLDO1
(CE_A = High) enabling all device functions.
JP3
Connects the chip enable signal of gate driver, IC U9, to +5 VLDO2
(CE_B = High) enabling all device functions.
TP3-TP6
Connects the power supply, DC+ signal, to Inverter A circuits which are
populated by default and can carry 15A current.
TP7-TP8
Connects the power supply, DC+ signal, to Inverter B circuits which are
populated by default and can carry 15A current.
TP54-TP55
If populated, +12V LDO (U11) input and output are shorted bypassing the
low LDO.
MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE) JUMPERS
JP2
JP3
TP54-TP55
TP3-TP6
2014 Microchip Technology Inc.
TP7-TP8
DS50002261A-page 35
Motor Control 10-24V Driver Board (Dual/Single)
2.4.2
Board LED Indications
The on-board LEDs are provided in Table 2-17 and Figure 2-4 shows the LED positions.
TABLE 2-17:
LED
Designator
DS50002261A-page 36
BOARD LEDs
LED Indication
D1
Power-on status indication for Auxiliary Supply Output DVDD (+3.3V/+5V) from
the Signal Board.
D2
Power-on status indication for Auxiliary Supply Output +5V from the
Signal Board.
D3
Power-on status indication for the on-board +12V LDO (U11) output.
D25
Indicates PWM Pin status of Inverter A Phase 1 Top MOSFET control.
D26
Indicates PWM Pin status of Inverter A Phase 1 Bottom MOSFET control.
D27
Indicates PWM Pin status of Inverter A Phase 2 Top MOSFET control.
D28
Indicates PWM Pin status of Inverter A Phase 2 Bottom MOSFET control.
D29
Indicates PWM Pin status of Inverter A Phase 3 Top MOSFET control.
D30
Indicates PWM Pin status of Inverter A Phase 3 Bottom MOSFET control.
D31
Indicates PWM Pin status of Inverter B Phase 1 Top MOSFET control.
D32
Indicates PWM Pin status of Inverter B Phase 1 Bottom MOSFET control.
D33
Indicates PWM Pin status of Inverter B Phase 2 Top MOSFET control.
D34
Indicates PWM Pin status of Inverter B Phase 2 Bottom MOSFET control.
D35
Indicates PWM Pin status of Inverter B Phase 3 Top MOSFET control.
D36
Indicates PWM Pin status of Inverter B Phase 3 Bottom MOSFET control.
2014 Microchip Technology Inc.
Board Interface Description
FIGURE 2-4:
MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE) LEDs
D2
D1
D25-D30
D31-D36
D3
2014 Microchip Technology Inc.
DS50002261A-page 37
Motor Control 10-24V Driver Board (Dual/Single)
2.4.3
Board Test Points
There are several test points on the Motor Control 10-24V Driver Board (Dual/Single)
to allow probing of voltages, currents and signals. Table 2-18 provides all the test points
on the board.
TABLE 2-18:
Test
Point
Number
Test Point
Name
TP1
VBUS_A
TP2
VBUS_B
TP4
DGND
Digital Ground
TP5
DGND
Digital Ground
TP9
DE2_A
DE2 Communication Link of MCP8024 U8
Description
DC Bus Feedback of Inverter A
DC Bus Feedback of Inverter B
TP10
DE2_B
TP11
FAULT_MB
Inverter B Bus Current Fault Output to Microcontroller on
Signal Board
TP12
FAULT_AB
Inverter A and Inverter B Combined Fault Output generated by
Fault Generation Logic
DE2 Communication Link of MCP8024 U9
TP13
IPHASE1_MB Inverter B Phase 1 Current Feedback
TP14
IPHASE2_MB Inverter B Phase 2 Current Feedback
TP15
IBUS_MB
TP16
FAULT_MA
TP17
5VLDO1
Output of Internal +5V LDO Regulator of Gate Driver, MCP8024 U8
TP18
5VLDO2
Output of Internal +5V LDO Regulator of Gate Driver, MCP8024 U9
TP19
TP20
Inverter B Bus Current Feedback
Inverter A Bus Current Fault Output from Signal Board
VPHASE3_MA Phase 3 BEMF Voltage Feedback of Motor A
RECN_MA
Recreated Neutral Feedback for Motor A
TP21
VPHASE2_MA Phase 2 BEMF Voltage Feedback of Motor A
TP22
VPHASE1_MA Phase 1 BEMF Voltage Feedback of Motor A
TP23
GT1H_A
Gate Signal from Driver for Inverter A Phase 1 Top
MOSFET Control
TP24
GT2H_A
Gate Signal from Driver for Inverter A Phase 2 Top
MOSFET Control
TP25
GT3H_A
Gate Signal from Driver for Inverter A Phase 3 Top
MOSFET Control
TP26
GT3L_A
Gate Signal from Driver for Inverter A Phase 3 Bottom
MOSFET Control
TP27
GT2L_A
Gate Signal from Driver for Inverter A Phase 2 Bottom
MOSFET Control
TP28
GT1L_A
Gate Signal from Driver for Inverter A Phase 1 Bottom
MOSFET Control
TP29
VDC_A
DC Bus Voltage of Inverter A
TP30
12VLDO1
Output of Internal +12V LDO Regulator of Gate Driver,
MCP8024 U8
RECN_MB
Recreated Neutral Feedback for Motor B
TP31
TP32
Note 1:
2:
DS50002261A-page 38
BOARD TEST POINTS
VPHASE3_MB Phase 3 BEMF Voltage Feedback of Motor B
On the dsPIC® DSC Signal Board, the DVDD voltage level is configured as either
+3.3V or +5V by the PIM plugged into the board
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as
either +1.65V or +2.5V by the PIM plugged into the board
2014 Microchip Technology Inc.
Board Interface Description
TABLE 2-18:
Test
Point
Number
BOARD TEST POINTS (CONTINUED)
Test Point
Name
Description
TP33
VPHASE1_MB Phase 1 BEMF Voltage Feedback of Motor B
TP34
VPHASE2_MB Phase 2 BEMF Voltage Feedback of Motor B
TP35
GT1H_B
Gate Signal from Driver for Inverter B Phase 1 Top
MOSFET Control
TP36
GT2H_B
Gate Signal from Driver for Inverter B Phase 2 Top
MOSFET Control
TP37
GT3H_B
Gate Signal from Driver for Inverter B Phase 3 Top
MOSFET Control
TP38
GT3L_B
Gate Signal from Driver for Inverter B Phase 3 Bottom
MOSFET Control
TP39
GT2L_B
Gate Signal from Driver for Inverter B Phase 2 Bottom
MOSFET Control
TP40
GT1L_B
Gate Signal from Driver for Inverter B Phase 1 Bottom
MOSFET Control
TP41
VDC_B
DC Bus Voltage of Inverter B
TP42
12VLDO2
Output of Internal +12V LDO Regulator of Gate Driver,
MCP8024 U9
TP43
IPHASE3_MB Inverter B Phase 3 Current Feedback
TP44
IPHASE3_MA Inverter A Phase 3 Current Feedback
TP45
—
Reference Voltage Output of Comparator, U4
TP48
—
Brake Enable Input to Brake Switch Driver, U5
TP49
IBRAKE_A
TP50
—
Reference Voltage Output of Comparator, U7
TP53
—
Brake Enable Input to Brake Switch Driver, U10
Brake Circuit A Current Sensing Amplifier Output
TP54
DC+
DC Power Supply (10V-24V)
TP55
+12V
On-board +12V LDO (U11) Regulator Output
TP56
IBRAKE_B
TP58
PGND
Power Ground
TP59
PGND
Power Ground
TP60
AGND
Analog Ground
TP61
AGND
Analog Ground
TP62
DVDD
+3.3V or 5V Digital Power Supply from Signal Board(1)
TP63
PGND
Power Ground
TP64
PGND
Power Ground
TP68
VREF_EXT
+1.65V/+2.5V Voltage Reference to shift Op Amp Outputs(2)
J3-1
PWM1H_A
PWM Input to Driver for Inverter A Phase 1 Top
MOSFET Control
J3-2
PWM1L_A
PWM Input to Driver for Inverter A Phase 1 Bottom
MOSFET Control
J3-3
PWM2H_A
PWM Input to Driver for Inverter A Phase 2 Top MOSFET Control
J3-4
PWM2L_A
PWM Input to Driver for Inverter A Phase 2 Bottom
MOSFET Control
Note 1:
2:
2014 Microchip Technology Inc.
Brake Circuit B Current Sensing Amplifier Output
On the dsPIC® DSC Signal Board, the DVDD voltage level is configured as either
+3.3V or +5V by the PIM plugged into the board
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as
either +1.65V or +2.5V by the PIM plugged into the board
DS50002261A-page 39
Motor Control 10-24V Driver Board (Dual/Single)
TABLE 2-18:
Test
Point
Number
Test Point
Name
Description
J3-5
PWM3H_A
PWM Input to Driver for Inverter A Phase 3 Top MOSFET Control
J3-6
PWM3L_A
PWM Input to Driver for Inverter A Phase 3 Bottom
MOSFET Control
J3-7
DGND
J14-1
PWM1H_B
PWM Input to Driver for Inverter B Phase 1 Top MOSFET Control
J14-2
PWM1L_B
PWM Input to Driver for Inverter B Phase 1 Bottom
MOSFET Control
J14-3
PWM2H_B
PWM Input to Driver for Inverter B Phase 2 Top MOSFET Control
J14-4
PWM2L_B
PWM Input to Driver for Inverter B Phase 2 Bottom
MOSFET Control
J14-5
PWM3H_B
PWM Input to Driver for Inverter B Phase 3 Top MOSFET Control
J14-6
PWM3L_B
PWM Input to Driver for Inverter B Phase 3 Bottom
MOSFET Control
J14-7
DGND
HA_A
HALLA_MA
Hall Sensor A/QEA Feedback of Motor A
HB_A
HALLB_MA
Hall Sensor B/QEB Feedback of Motor A
Digital Ground
Digital Ground
HC_A
HALLC_MA
Hall Sensor C/INDEX Feedback of Motor A
HOME_A
HOME_MA
QEI HOME Signal of Motor A
HA_B
HALLA_MB
Hall Sensor A/QEA Feedback of Motor B
HB_B
HALLB_MB
Hall Sensor B/QEB Feedback of Motor B
HC_B
HALLC_MB
Hall Sensor C/INDEX Feedback of Motor B
HOME_B
HOME_MB
QEI HOME Signal of Motor B
Note 1:
2:
DS50002261A-page 40
BOARD TEST POINTS (CONTINUED)
On the dsPIC® DSC Signal Board, the DVDD voltage level is configured as either
+3.3V or +5V by the PIM plugged into the board
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured as
either +1.65V or +2.5V by the PIM plugged into the board
2014 Microchip Technology Inc.
MOTOR CONTROL 10-24V
DRIVER BOARD (DUAL/SINGLE)
USER’S GUIDE
Chapter 3. Hardware Description
3.1
INTRODUCTION
This chapter provides a more detailed description of the hardware features of the Motor
Control 10-24V Driver Board (Dual/Single).
The Motor Control 10-24V Driver Board (Dual/Single) is a power board with dual motor
control and three-phase inverter stages that can be interfaced with the dsPIC® DSC
Signal Board. The boards support PMSM/BLDC motor control application development
using Microchip controllers. The Motor Control 10-24V Driver Board (Dual/Single) also
features a three-phase Brushless DC (BLDC) motor gate driver with power module,
MCP8024, from Microchip’s product portfolio. Motor control algorithms, position
feedback interface, and current and voltage sensing circuits are built-in to facilitate
development of various PMSM/BLDC motors. Two dynamic brake circuit stages are
also integrated on the board.
Both Inverter A and Inverter B can be operated from an input voltage in the range of
10-24V, and are capable of delivering a continuous output phase current of 10A (RMS)
in the specified operating range. The dynamic brake circuit can also handle continuous
current of 10A, without exceeding the specified operating conditions.
Note:
3.2
Inverter A and Inverter B, and associated circuits are referred to using the
symbols, A and B.
HIGHLIGHTS
This chapter covers the following hardware sections:
•
•
•
•
•
•
•
•
Three-Phase Inverter Bridge and Gate Driver
DC Bus Voltage Sensing
Hall Sensor/Quadrature Encoder Interface
Back-EMF and Recreated Neutral Signals
Phase and Bus Current Sensing Circuits
Fault Generation Logic Circuit
Brake Circuit
Power Supply
The hardware section of the Motor Control 10-24V Driver Board (Dual/Single) is shown
in Figure 3-1.
2014 Microchip Technology Inc.
DS50002261A-page 41
Motor Control 10-24V Driver Board (Dual/Single)
FIGURE 3-1:
MOTOR CONTROL10-24V DRIVER BOARD HARDWARE SECTIONS
1
7-A
7-B
8-B
8-A
5-A
5-B
2
10-B
10-A
6-B
6-A
4-A
4-B
3
9-A
3-B
3-A
9-B
Legend:
1
dsPIC® DSC Signal Board Interface Connector
3
Input Power Supply
4
Three-Phase Inverter Bridge A and B
5
Gate Driver Circuit
6
Current Sensing Shunts
7
Back-EMF Sensing Circuit
8
Hall Sensor/QE Interface Circuit
9
Motor Connector
10
Dynamic Brake Circuit
Note:
2
+12V LDO Circuit
A and B indicates the inverter section to which each hardware block is associated.
DS50002261A-page 42
2014 Microchip Technology Inc.
Hardware Description
3.3
THREE-PHASE INVERTER BRIDGE AND GATE DRIVER
The three-phase motor power stage is implemented using six N-channel MOSFETs
(IPB054N06N3 G), configured as three half-bridges. A resistor is connected across the
gate and source of each MOSFET, to ensure soft turn-off of the MOSFET, if the gate
signal is disconnected. Low-ESR ceramic capacitors are provided across each
half-bridge for filtering high-frequency currents due to switching. Transient voltage suppressors are connected between each inverter supply and ground for protecting
inverter and driver against voltage transients.
Microchip’s three-phase, BLDC motor gate driver along with the power module,
MCP8024, are used for low and high side MOSFET gate drive. Gate driver inputs are
3.3V compatible. MCP8024 provides undervoltage, overvoltage, shoot-through and
short-circuit protection of the inverter bridge. It also integrates three amplifiers and an
overvoltage comparator. DE2 communication (half-duplex, 9600 baud, 8-bit, no parity,
single line communication link) is provided for driver Fault status indication, driver configuration and setting parameters, such as dead time, blanking time, overcurrent
threshold and so on.
The DE2 communication link that interfaces between the microcontroller and the
MCP8024 can be established by the UART controller module, and by connecting the
UART receive and transmit pins to a single line DE2 communication link of the gate
driver, as shown in Figure 3-2.
FIGURE 3-2:
DE2 COMMUNICATION LINK
Microcontroller
MCP8024
TX
UART
RX
DE2
DE2 Interface
The three-phase BLDC motor gate driver, with the power module MCP8024, also
integrates +5V and +12V LDO voltage regulators, capable of delivering up to 20 mA of
current. The +12V LDO output from MCP8024 supplies power to the bootstrap circuit on
the same chip used for driving the high side MOSFETs. The +5V LDO output is used to
supply power to the amplifier circuits on the board. Pull-down resistors are added to all
driver inputs to turn off MOSFETs in the absence of PWM signals. For more information
on MCP8024, refer to the “3-Phase Brushless DC (BLDC) Motor Gate Driver with Power
Module” (DS20005228) data sheet.
3.4
DC BUS VOLTAGE SENSING
On the Motor Control 10-24V Driver Board (Dual/Single), the DC bus voltage sensing
network is present in both the Inverter A and Inverter B sections. These inverters can
be operated from different input voltage supplies.
2014 Microchip Technology Inc.
DS50002261A-page 43
Motor Control 10-24V Driver Board (Dual/Single)
3.5
HALL SENSOR/QUADRATURE ENCODER INTERFACE
The BLDC/PMSM motor control applications can read rotor position and speed information from Hall sensors or encoders. The Hall sensors can be powered by the +5V
supply output available through the interface connector terminals. The Hall sensor/
Quadrature Encoder Interface circuit supports either open-collector or push-pull output
sensors. A capacitor is added to each signal output to reduce the noise. The Hall
sensor outputs can be interfaced with a +3.3V or +5V microcontroller. By default, the
voltage divider scales down the +5V output to +3.3V. If the sensor outputs are interfaced with a +5V microcontroller, and the VIH of the controller input pins is less than
3.3V, the divider has to be modified to deliver a +5V output. Circuit configurations to set
sensor output voltage are provided in Table 3-1 and Table 3-2.
TABLE 3-1:
OUTPUT VOLTAGE LEVEL SETTING HALL SENSOR/
QUADRATURE ENCODER INTERFACE CIRCUIT A
Resistor Value to Set Signal Output
Voltage Level
Signal Description
3.3V
(default setting)
HALLA_MA
(Hall Sensor A/QEA Feedback from Motor A)
R40
HALLB_MA
(Hall Sensor B/QEB Feedback from Motor A)
R41
HALLC_MA
(Hall Sensor C/INDEX Feedback from Motor A)
R42
HOME_MA
(QEI HOME Signal from Motor A)
R43
TABLE 3-2:
5V
R40
47 k
0
R41
47 k
0
R42
47 k
0
R43
47 k
0
OUTPUT VOLTAGE LEVEL SETTING HALL SENSOR/
QUADRATURE ENCODER INTERFACE CIRCUIT B
Resistor Value to Set Signal Output
Voltage Level
Signal Description
3.3V
(default setting)
DS50002261A-page 44
HALLA_MB
(Hall Sensor A/QEA Feedback from Motor B)
R52
HALLB_MB
(Hall Sensor B/QEB Feedback from Motor B)
R53
HALLC_MB
(Hall Sensor C/INDEX Feedback from Motor B)
R54
HOME_MB
(QEI HOME Signal from Motor B)
R55
5V
R52
47 k
0
R53
47 k
0
R54
47 k
47 k
0
R55
0
2014 Microchip Technology Inc.
Hardware Description
3.6
BACK-EMF AND RECREATED NEUTRAL SIGNALS
The BLDC motors can be commutated by monitoring back-EMF signals. The motor
back-EMF is scaled down by voltage dividers. The capacitors can be added at divider
outputs to filter the noise. An additional resistor network is added to reconstruct motor
neutral signals. The recreated neutral signals, RECN_MA and RECN_MB, are connected to the J13 connector pins through zero ohm resistors (board default setting).
The back-EMF sensing circuits in both inverter sections are identical. Table 3-3
provides the resistor jumper setting for connecting the recreated neutral outputs to the
J13 connector pins.
TABLE 3-3:
RESISTOR JUMPER SETTING FOR RECREATED NEUTRAL
OUTPUT SELECTION
Signal Description
Zero Ohm Resistor Jumper Setting
RECN_MA to J13:B6
R196
To connect RECN_MA (recreated neutral
output) to the B6 pin of the signal board
interface connector, J13.
RECN_MA
47 k
R197
IPHASE3_MA
J13:B6
R227
IBRAKE_A
RECN_MB to J13:A12
R194
To connect RECN_MB (recreated neutral
output) to the A12 pin of the signal board
interface connector, J13.
RECN_MB
47 k
R195
IPHASE3_MB
J13:A12
R228
IBRAKE_B
2014 Microchip Technology Inc.
DS50002261A-page 45
Motor Control 10-24V Driver Board (Dual/Single)
3.7
PHASE AND BUS CURRENT SENSING CIRCUITS
In the Motor Control 10-24V Driver Board (Dual/Single), shunt resistors are provided in
each inverter leg to determine the amount of current flowing through the motor phases
that are required to implement the field-oriented control of the PMSMs.
An additional shunt resistor is provided for sensing bus current. DC bus current information is necessary for overcurrent protection and to implement torque control of the
BLDC motors. Motor phase currents can also be reconstructed from the DC bus current
information by sampling currents appropriately in the PWM switching period.
A non-inverting differential amplifier is used for amplifying voltage drop across shunt
resistors. The amplifier output voltage is shifted by VREF_EXT to allow positive and
negative current swings. The voltage offset can be modified by a resistor divider provided in the non-inverting input of the bus current amplifiers. The Common mode and
Differential mode filters are added to the op amp input pins for noise filtering. It is
possible to add filters at the output of the amplifiers, if required. See
Section C.3 “Motor Current Amplifier Configuration” for on-board amplifier gain
setting and input filter details.
Note:
3.7.1
On the dsPIC DSC Signal Board, the VREF_EXT voltage level is configured
as +1.65V or +2.5V by the PIM plugged into the board.
Inverter A Current Amplifiers
As shown in Figure 3-3, Phase 1, Phase 2 and the bus current shunt voltage drops are
transferred to the dsPIC DSC Signal Board through connector, J13. On the dsPIC DSC
Signal Board, amplifiers that are internal to the dsPIC DSC are used for amplification
of Phase 1, Phase 2 and the bus current signals. The comparator that is internal to the
dsPIC DSC is used for overcurrent detection. For more information, refer to the “dsPIC®
DSC Signal Board User’s Guide” (DS50002263). For dsPIC DSC internal amplifier gain
setting information, refer to the “dsPIC33EV256GM106 5V Motor Control Plug-In
Module (PIM) Information Sheet” (DS50002225) and the “dsPIC33EP512GM710
Plug-In Module (PIM) Information Sheet for Single-Dual Motor Control” (DS50002216).
Please check the Microchip web site (www.microchip.com) for future Plug-In Module
(PIM) Information Sheets.
The Phase 3 current can be amplified using the operational amplifier, MCP6021,
provided in the Inverter A section. This amplifier can also be configured to sense any
phase current or bus current by populating the appropriate input resistors. The output
of this amplifier can be connected to the J13 pin through the zero ohm jumper resistors.
The resistor jumper setting is provided in Table 3-4.
3.7.2
Inverter B Current Amplifiers
As shown in Figure 3-4, operational amplifiers, U9-A, U9-B and U9-C that are internal
to MCP8024, are used for Phase 1, Phase 2 and bus current amplification. IOUT1 of
the MCP8024 is also connected to an internal overcurrent comparator and generates
a Fault output at the ILIMIT_OUT pin of the driver. The Motor Control 10-24V Driver
Board (Dual/Single) exploits this driver feature to generate the Inverter B overcurrent
Fault, known as FAULT_MB. The MCP8024 amplifier, U9-C (see Figure A-1), can be
configured to sense third phase current instead of DC bus current by populating the
input resistors appropriately.
The operational amplifier, MCP6021, is added for Phase 3 current amplification. This
amplifier can be configured to sense any phase current or bus current by populating the
appropriate input resistors. The output of this amplifier can be connected to the J13 pins
through zero ohm jumper resistors. The resistor jumper setting is provided in Table 3-5.
DS50002261A-page 46
2014 Microchip Technology Inc.
Hardware Description
TABLE 3-4:
RESISTOR JUMPER FOR INVERTER A THIRD PHASE CURRENT
OUTPUT SELECTION
Signal Description
Zero Ohm Resistor Jumper Setting
IPHASE3_MA to J13:B6
R196
To connect IPHASE3_MA (output of phase
current sensing amplifier, U3) to the B6 pin
of the signal board interface connector,
J13.
RECN_MA
R197
IPHASE3_MA
470
k
J13:B6
R227
IBRAKE_A
TABLE 3-5:
RESISTOR JUMPER FOR INVERTER B THIRD PHASE CURRENT
OUTPUT SELECTION
Signal Description
Zero Ohm Resistor Jumper Setting
IPHASE3_MB to J13:A12
R194
To connect IPHASE3_MB (output of phase
current sensing amplifier, U2) to the A12 pin
of the signal board interface connector, J13.
RECN_MA
R195
IPHASE3_MA
0
J13:A12
R228
IBRAKE_A
2014 Microchip Technology Inc.
DS50002261A-page 47
Motor Control 10-24V Driver Board (Dual/Single)
FIGURE 3-3:
INVERTER A CURRENT SENSING CIRCUIT ARCHITECTURE
Power Board
VDC_A
Signal Board
Three-Phase Inverter Bridge – A
Phase 1 Current (+)
0.015
Phase 1 Current (–)
Phase 2 Current (+)
Phase 3 Current (+)
Rsh7
Rsh1
0.015
Phase 2 Current (–)
0.015
Rsh2
Phase 3 Current (–)
Bus Current (+)
0.015
Rsh5
Bus Current (–)
PGND
R192
Phase 3 Current (+)
R190
Bus Current (+)
0
R191
Bus Current (–)
J13
0
C19
+
B19
–
Phase 2 Current (+)
C23
+
Phase 2 Current (–)
B22
Phase 1 Current (+)
B23
Phase 1 Current (–)
C26
R193
R189
Phase 3 Current (–)
Phase 1 Current (+)
R186
Phase 2 Current (+)
R184
Phase 3 Current (+)
R
R181
Phase 3 Current (–)
R
R180
U3
+
R197
B6
MCP6021
–
FAULT_MA
Interface Connector
R187
Signal Board Interface Connector
Bus Current (+)
–
+
–
–
CMP
+
Phase 2 Current (–)
R178
dsPIC33EP
Phase 1 Current (–)
R177
Bus Current (–)
DS50002261A-page 48
2014 Microchip Technology Inc.
Hardware Description
FIGURE 3-4:
INVERTER B CURRENT SENSING CIRCUIT ARCHITECTURE
VDC_B
Three-Phase Inverter Bridge – B
Phase 2 Current (+)
Phase 1 Current (+)
Rsh8
0.015
Phase 3 Current (+)
Rsh3
0.015
Phase 2 Current (–)
Phase 1 Current (–)
Rsh4
0.015
Phase 3 Current (–)
Bus Current (+)
Rsh6
0.015
Bus Current (–)
PGND
R32
Phase 3 Current (+)
R164
R
Bus Current (+)
U9
R161
R64
Bus Current (+)
MCP8024
R
Bus Current (–)
18
R21
R22
17
Phase 3 Current (–)
R31
Phase 2 Current (+)
Phase 2 Current (+)
R62
R
R
Phase 2 Current (–)
U2
14
13
+
B
–
12
+
MCP6021
R35
Phase 3 Current (–)
–
IOUT1
C
16
Phase 1 Current (+)
Phase 3 Current (+)
+
Phase 1 Current (+)
–
Phase 1 Current (–)
11
10
+
A
–
9
R19
R195
Phase 2 Current (–)
R20
DVDD
ILIMIT_OUT
Phase 1 Current (–)
15
FAULT_MB
R34
TX
Bus Current (–)
RX
–
CMP
+
DAC REF
44
DE2 Interface
J13
A12 A15 B16 C16 C36 B15 B12
Signal Board Interface Connector
2014 Microchip Technology Inc.
DS50002261A-page 49
Motor Control 10-24V Driver Board (Dual/Single)
3.8
FAULT GENERATION LOGIC CIRCUIT
This section describes the Fault outputs on the Motor Control 10-24V Driver Board
(Dual/Single). There are three Fault outputs: Inverter A Overcurrent Fault
(FAULT_MA), Inverter B Overcurrent Fault (FAULT_MB) and combined Fault
(Fault_AB). All Faults are active-low outputs.
3.8.1
Inverter A Overcurrent Fault (FAULT_MA)
The Inverter A Overcurrent Fault output, FAULT_MA, is generated on the dsPIC DSC
Signal Board and is transferred to the Motor Control 10-24V Driver Board (Dual/Single)
through connector, J13. On the dsPIC DSC Signal Board, the comparator internal to
the dsPIC DSC is used to generate the Overcurrent Fault FAULT_MA.
3.8.2
Inverter B Overcurrent Fault (FAULT_MB)
The Inverter B Overcurrent Fault, FAULT_MB, is generated by the comparator internal
to the gate driver, MCP8024 (U9). The output of the operational amplifier (U9-C),
configured to amplify bus current, is connected internally to the inverting input of the
comparator. The non-inverting input of the comparator threshold may be set with a
SET_ILIMIT command from the microcontroller to MCP8024 through the DE2 communications link. For more information on DE2 communication and message protocol,
refer to the “3-Phase Brushless DC (BLDC) Motor Gate Driver with Power Module”
(DS20005228A) data sheet.
3.8.3
Combined Fault (FAULT_AB)
The Fault generation circuit performs logical and Overcurrent Faults, FAULT_MA and
FAULT_MB, to generate a single Fault output called FAULT_AB. Table 3-6 provides the
truth table of the Fault generation logic circuit.
TABLE 3-6:
FAULT GENERATION LOGIC TRUTH TABLE
FAULT_MA
FAULT_MB
FAULT_AB
0
0
0
0
1
0
0
1
0
1
1
1
Fault inputs, FAULT_MA or FAULT_MB, can be transferred to the Fault logic circuit output, FAULT_AB, by setting the other input at logic ‘1’. Figure 3-5 shows three possible
configurations of Fault generation logic.
DS50002261A-page 50
2014 Microchip Technology Inc.
Hardware Description
FIGURE 3-5:
FAULT GENERATION LOGIC CIRCUIT CONFIGURATIONS
Configuration 1:
R28
DVDD
R29
FAULT_MA
0
FAULT_AB = ‘FAULT_MA’ and
‘FAULT_MB’
R30
FAULT_MB
0
R27
DVDD
Configuration 2:
R28
DVDD
R29
FAULT_MA
0
R30
A
B
Y
FAULT_AB = ‘FAULT_MA’
FAULT_MB
R27
DVDD
LOGIC ‘1’
0k
4.7
Configuration 3:
R28
DVDD
4.7 k
LOGIC ‘1’
R29
FAULT_MA
A
R30
FAULT_MB
B
Y
FAULT_AB = ‘FAULT_MB’
0
R27
DVDD
2014 Microchip Technology Inc.
DS50002261A-page 51
Motor Control 10-24V Driver Board (Dual/Single)
3.9
BRAKE CIRCUIT
In motor control applications, during deceleration or periods of swift reversal, the motor
can work as a generator, feeding energy back into the motor drive. When the motor
drive does not provide four quadrant operation, and the braking power is not dissipated,
the DC link voltage will increase and cause an overvoltage condition. During regeneration or braking, a dynamic brake (brake switch in-series with a brake resistor
connected across the DC bus) can be employed to absorb this excess energy, thereby
ensuring that the DC link voltage is maintained at a safe operating level.
In the Motor Control 10-24V Driver Board (Dual/Single), dynamic brake circuits are
provided for both the inverters. As per the application requirement, the user can add a
brake resistor to the respective brake circuits using the on-board terminals. The diode
is provided across the brake resistor terminals to free wheel current due to the
inductance of the brake resistor.
The brake switches can handle 10A (RMS) @ +25ºC in the operating voltage range.
The value of the resistor should be chosen such that the current is less than 10A at
peak DC bus voltage.
By default, the Braking Chopper Circuits are disabled by pull-down resistors connected
as inputs of the MOSFET driver, TC1412N. The brake switch can be controlled either
through a hardware overvoltage detection comparator with hysteresis or through software brake enable. Figure 3-6 shows the brake circuit block diagram. Resistors to
select the brake enable signal are provided in Table 3-7.
FIGURE 3-6:
BRAKE CIRCUIT BLOCK DIAGRAM
VDC
Overvoltage
Comparator
VIN+
Load
VOUT
VOH
VOL
VINVTL
VR
VTH
Brake Switch
Brake Enable
from dsPIC® DSC
DS50002261A-page 52
MOSFET Driver
TC1412N
2014 Microchip Technology Inc.
Hardware Description
TABLE 3-7:
BRAKE ENABLE SIGNAL CONFIGURATION RESISTORS
Brake Enable Signal
Brake Circuit
Hardware Brake
Enable
Firmware Brake
Enable
R232
Disable Brake Circuit
(default setting)
R232
R232
R238
R238
0
Brake Circuit – A
R238
0
R239
R239
R239
47 k
10
R248
R248
R248
R254
R254
0
Brake Circuit – B
R254
0
R255
R255
R255
10 k
3.9.1
Firmware Brake Enable Signal (BRAKE_EN_A or
BRAKE_EN_B):
The user firmware has to monitor the DC bus voltage and the brake enable signal to be
made active if the voltage exceeds the predefined threshold level. The brake enable
signal is turned off when the voltage reaches a safe inverter operating voltage. The
firmware brake enable signal can be Pulse-Width Modulated at an appropriate
frequency for brake switch control. The dsPIC DSC output compare module can be
used for generating PWMs for controlling the brake switch.
3.9.2
Hardware Brake Enable Circuit
The non-inverting comparator circuit, MCP65R41, is provided on the board to generate
a hardware brake enable signal and to control dynamic braking without firmware intervention. A voltage divider circuit is provided to monitor the bus voltage. The output of
the DC bus voltage divider is fed to the non-inverting input of the comparator. The
inverting input of the comparator is generated by dividing the Comparator Voltage
Reference (VREF) output, 2.4V.
The hysteresis ensures that false triggering does not occur due to noise spikes and
ripple voltage present on the DC bus voltage. The comparator hysteresis is configured
externally by the resistors. There may be variation in the trip levels due to component
tolerance and variation in comparator operating voltage. See Section C.5 “Hardware
Brake Enable Circuit Configuration” for equations to calculate comparator
hysteresis.
2014 Microchip Technology Inc.
DS50002261A-page 53
Motor Control 10-24V Driver Board (Dual/Single)
3.9.3
Brake Current Sensing Amplifier
An MCP6021 device-based, non-inverting differential amplifier is added to sense the
current through the brake resistor. A shunt resistor is added in-series with the brake
switch for sensing the current. The voltage across the shunt resistor is connected to the
differential amplifier inputs. See Section C.4 “Brake Current Amplifier Configuration” for brake current amplifier gain setting. The brake current amplifier output can be
connected to an analog pin of the controller through connector, J13, by configuring the
resistor jumpers. The resistor jumper setting is shown in Table 3-8.
TABLE 3-8:
RESISTOR JUMPER TO SELECT BRAKE CURRENT
OUTPUT SIGNAL
Signal Description
Zero Ohm Resistor Jumper Setting
IBRAKE_A to J13:B6
R196
To connect IBRAKE_A (output of brake current sensing amplifier, U6) to the B6 pin of
the signal board interface connector, J13.
RECN_MA
R197
IPHASE3_MA
J13:B6
R227
IBRAKE_A
0
47
k
0
IBRAKE_B to J13:A12
R194
To connect IBRAKE_B (output of brake current sensing amplifier, U12) to the A12 pin of
the signal board interface connector, J13.
RECN_MB
R195
IPHASE3_MB
J13:A12
R228
IBRAKE_B
DS50002261A-page 54
0
0
47
k
0
2014 Microchip Technology Inc.
Hardware Description
3.10
POWER SUPPLY
The Motor Control 10-24V Driver Board (Dual/Single) receives power through the
connectors, J5 or J8. The same voltage is transferred to the signal board through
connector, J13.
Each inverter bridge and its associated circuits can be powered independently, allowing
each power stage to operate at a different voltage level. Inverter A can be powered up
by a voltage source connected to connector, J1, if a wire jumper between TP3-TP7 is
disconnected. Similarly, Inverter B can be powered up by a different voltage source
connected to connector, J6, if a wire jumper between TP7-TP8 is disconnected. See
Section 2.3.1 “Power Supply Connectors (J5, J8, J1 and J6)” for configuration
details.
Each MCP8024 gate driver is operated from the voltage supply that is powering the
respective inverter bridge. The supply for biasing the low side gate drive and the bootstrap circuit for the high side gate drive is regulated by the +12V LDO, internal to
MCP8024. The output of the +5V LDO, internal to the gate drivers, U8 and U9, supplies
power to the operational amplifier, MCP6021, in the respective inverter sections. The
low dropout voltage regulators, +5V and +12V, internal to MCP8024, are capable of
delivering current up to 20 mA. For more information on the specifications of the +5V
or +12V LDO that are internal to MCP8024 and the bootstrap circuit requirements, refer
to the “3-Phase Brushless DC (BLDC) Motor Gate Driver with Power Module”
(DS20005228) data sheet.
The signal board provides a +5V DC output for powering Hall sensors or encoders. The
DVDD (+3.3V/+5V) for powering the Fault generation logic for the overvoltage detection
comparator circuit and the hardware brake enable is provided through connector, J13.
The voltage reference (VREF_EXT) for the operational amplifier output offset is also
provided by the signal board through connector, J13.
The on-board +12V LDO (U11) supplies power to the MOSFET driver, TC1412N (U5
and U10), circuitry. The same +12V LDO output is also available through connector,
J16, for powering the external circuits.
Figure 3-7 shows the Motor Control 10-24V Driver Board (Dual/Single) power supply
architecture.
2014 Microchip Technology Inc.
DS50002261A-page 55
MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE) POWER SUPPLY ARCHITECTURE
J13
120-Pin Signal Board Interface Connector
DC+
DC+
Fault
Generation
Logic
+12V
+12V LDO
DVDD
Inverter A Section
+5V
+5V
5VLDO2
VDC_A
U8
+5V
To Sensors
Amplifier – 3rd
Phase Current
5VLDO1
MCP8024
Three Op Amps and
a Comparator
+5V LDO
Three Op Amps
and a Comparator
+12V LDO
Low Side Drivers
+12V LDO
Low Side Drivers
5VLDO1
5VLDO1
High Side Drivers
High Side Drivers
Bootstrap Circuit
Bootstrap Circuit
12VLDO1
12VLDO2
2014 Microchip Technology Inc.
DVDD
Driver
TC1412N
+12V
VDC_A
VDC_A
I/P Supply
Connector
3
TP3 TP6
Hall Sensor/
Quadrature
Encoder
Interface
5VLDO2
Amplifier – 3rd
Phase Current
Dynamic Brake
Circuit B
5VLDO2
Brake Current
Sense Circuit
DVDD
Hardware
Brake Enable
Circuit
+12V
Driver
TC1412N
VDC_B
DC+
3
J1
Brake Switch
+5V
Three-Phase Inverter Bridge
Three-Phase Inverter Bridge
Hardware
Brake Enable
Circuit
VREF_EXT
Inverter B Section
+5V LDO
Dynamic Brake
Circuit A
Brake Current
Sense Circuit
VDC_B
AVDD
U9
MCP8024
Hall Sensor/
Quadrature
Encoder
Interface
DVDD
J5
J8
I/P Supply
Connector
Input
Jack
Input Supply 9-26.4V
TP7 TP8
J6
I/P Supply
Connector
VDC_B
Brake Switch
+5V
To Sensors
Motor Control 10-24V Driver Board (Dual/Single)
DS50002261A-page 56
FIGURE 3-7:
MOTOR CONTROL 10-24V
DRIVER BOARD (DUAL/SINGLE)
USER’S GUIDE
Appendix A. Board Schematics and Layout
A.1
INTRODUCTION
This chapter provides detailed technical information on the Motor Control 10-24V
Driver Board (Dual/Single).
A.2
BOARD SCHEMATICS AND LAYOUT
The following are the Motor Control 10-24V Driver Board (Dual/Single) schematics:
• Figure A-1: Motor Control 10-24V Driver Board (Dual/Single)
Schematics (Sheet 1 of 3)
• Figure A-2: Motor Control 10-24V Driver Board (Dual/Single)
Schematics (Sheet 2 of 3)
• Figure A-3: Motor Control 10-24V Driver Board (Dual/Single)
Schematics (Sheet 3 of 3)
• Figure A-4: Motor Control 10-24V Driver Board (Dual/Single) Layout
2014 Microchip Technology Inc.
DS50002261A-page 57
PWM3L_A
PWM3H_A
PWM2L_A
PWM2H_A
PWM1L_A
PWM1H_A
MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE) SCHEMATIC REVISION 1.0 (SHEET 1 OF 3)
R200
R201
R202
R203
R204
R205
47k
0603
47k
0603
47k
0603
47k
0603
47k
0603
47k
0603
A
U8
13
U8:ISENSE2-
14
U8:ISENSE2+
R198 10k
DVDD
15
0603
U8:IOUT1
16
17
U8:ISENSE1-
18
U8:ISENSE1+
19
20
21
22
23
24
49
PGND
VDD
ISENSE3+
VDD
IOUT2
LX
ISENSE2-
PGND
ISENSE2+
PGND
ILIMIT_OUT
+12V
I_OUT1
VBA
I_SENSE1-
VBB
I_SENSE1+
VBC
PGND
FA
PGND
FB
LA
FC
LB
HA
LC
HB
PGND
HC
41
R127
3 2 1
AGND
DNP
IN1+
C16
40
4.7 μF
25V
TP29
37
VB3_A
C46
10 μF 50V
2220
TP30
35
PHASE1_MA
PGND
0R
0603
3 2 1
AGND
31
VB3_A
30
PHASE1_MA
29
PHASE2_MA
28
PHASE3_MA
IN2+
3.3 μF
25V
0805
10R
DNP
R138
0R
0603
GT1H_A
10R
DNP
GT3H_A
DNP
10R
IN3+
3 2 1
J15
5 4 3 2 1
2014 Microchip Technology Inc.
AGND
IPB054N06N3 G
TP24
GT2H_A
Q1
G
GT1H_A
332k
0603
R80
10R
R68
DNP
C3
4.7 μF
50V
1210
PGND
PHASE1_MA
HALLC_MA
R69
GT2L_A
DNP
R82
TP27
D12
10R
R70
DNP
TP28
GT1L_A
GT1L_A
IPB054N06N3 G
G
R7
Q7
C58
DNP
GT2H_A
IPB054N06N3 G
G
332k
DGND
Note:
The operational amplifiers,
U8-A, U8-B, U8-C shown
in the schematic, are
internal to the MCP8024.
OUT1
0R
0603
C35
C4
Q2
4.7 μF
50V
1210
C59
DNP
R144
R145
1k
0R
0603
R3
332k
0603
PGND
IPB054N06N3 G
G
Q8
332k
0603
Rsh1
.015 R
OARS-3
SHUNT_HIGH_3_A
.015 R
OARS-3
SHUNT_HIGH_SUM_A
Rsh5
.015 R
OARS-3
R13
0R
0603
J3
DNP
SHUNT_HIGH_SUM_A
PWM1H_A
SHUNT_LOW_SUM_A
DGND
SHUNT_HIGH_SUM_A
PWM2L_A
R214
U8:IOUT3
9
+
SHUNT_HIGH_SUM_A
PWM3L_A
OUT3
0R
0603
SHUNT_HIGH_SUM_A
SHUNT_HIGH_3_A
AGND
SHUNT_HIGH_SUM_A
PWM1L_A
1k
PWM2H_A
R114
1k
PWM2L_A
R115
1k
PWM3L_A
PWM3H_A
R116
1k
R117
1k
SHUNT_HIGH_1_A
VDC_A
R118
1k
D25
GREEN
D26
GREEN
DGND
D27
GREEN
DGND
D28
GREEN
DGND
D29
GREEN
DGND
D30
GREEN
DGND
TP9
TP1
VBUS_A
R16
1.8k
0603
Tolerance of all resistors in the page must be 1%
AGND
R179
DNP
R178
47k
AGND
DNP
R181
1k
R184
DNP
R187
DNP
5VLDO1
R182
C41
1k
1000 pF
100V
R185
0603
1k
4
-A
U3
OUTA
3
DE2_TX_A
C9
0.1 μF
16V
0603
AGND
DE2_RX_A
R23
2k
0603
DE2_A
TP44
MCP6021
VDD
R183
1
IPHASE3_MA
0R
0603
VSS
+A
C42
DNP
C43
AGND
470 pF
R186
DNP
AGND
470 pF
1k
R189
0.1 μF
25V
DNP
C40
R180
DNP
C39
R215
AGND
R188
R278
47k
0R
AGND
R224
R275
DNP
DNP
VREF_EXT
TP68
TP PAD PCB 1.2x0.7
AGND
R15
18k
0603
DGND
5VLDO1
R177
C37
DNP
R113
Rsh2
SHUNT_HIGH_SUM_A
PWM2H_A
PWM1H_A
SJ-5518
PGND
Q9
R9
.015 R
OARS-3
AGND
PAD1 PAD2 PAD3 PAD4 PAD5
IPB054N06N3 G
G
GT3L_A
Rsh7
DNP
DGND
DNP
PHASE3_MA
332k
0603
PWM3H_A
11
PGND
C60
SHUNT_HIGH_SUM_A
C36
0R
0603
10 U8-A
4.7 μF
50V
1210
OUT2
0R
0603
DNP
U8:ISENSE3+
C5
Q3
PGND
R213
U8:IOUT2
12
+
U8:ISENSE3-
IPB054N06N3 G
G
GT3H_A
SHUNT_HIGH_2_A
SHUNT_LOW_SUM_A
R141
DNP
DGND
VDC_A
PGND
R8
PWM1L_A
DNP
100 pF
DGND
SHUNT_HIGH_1_A
R212
U8:IOUT1
16
+
AGND
R143
C22
91k
100 pF
DGND
1 2 3 4 5 6 7
R142
R47
C21
91k
100 pF
DGND
0603
PGND
SHUNT_HIGH_2_A
RUBBER PAD 0.50x0.50x0.23
DGND
R46
C20
91k
100 pF
DGND
R2
GT2L_A
DNP
AGND
R45
C19
PHASE2_MA
DNP
AVDD
HALLB_MA
HOME_MA
TP26
GT3L_A
332k
0603
R176
+5V
DVDD
TP25
DNP
R175
47k
HOME_A
HALLA_MA
91k
R1
DNP
13 –
U8-B
IN3-
VREF_EXT
R66
DNP
DNP
DNP
IN3+
IN3OUT3
10R
D8
DNP
R67
D10
17 –
U8-C
14
R43
HC_A
R78
TP23
0R
0603
U8:ISENSE2+
47k
DGND
R79
D9
25
DNP
U8:ISENSE2-
47k
R42
INVERTER A
R65
DNP
DNP
26
R136
1k
R41
R77
D7
R140
DNP
3.3 μF
25V
0805
R134
DNP
47k
PGND
AGND
R137
HB_A
HA_A
R40
DGND
AGND
J12
4.7k
4.7 μF
25V
27
18
R39
4.7k
C11
VB2_A
DNP
R139
3.3 μF
25V
0805
0R
0603
U8:ISENSE1-
R38
4.7k
R44
PGND
U8:ISENSE1+
R37
4.7k
PHASE3_MA
VB1_A
32
R128
DNP
R36
C48
R126
R130
+5V
12VLDO1
33
DNP
VREF_EXT
C47
R81
1k
1
2
3
4
5
6
PHASE2_MA
34
IN2-
IN2+
IN2OUT2
SSA24
VDC_A
C13
36
+5V
ED500/6DS
AGND
DNP
D21
SSA24
VB2_A
R133
J11
D20
SSA24
PAD
DNP
R135
D19
VB1_A
PGND
38
MCP8024
R129
R131
0R
1206
5VLDO1
39
IN1-
VREF_EXT
0R
1206
PHASE3_MA
PHASE2_MA
PHASE1_MA
J2
D11
IN1IN1+
OUT1
0R
1206
OSTVI030152
TP17
DNP
J10
R267
D
12
U8:IOUT2
FB
ISENSE3-
42
R266
S
11
U8:ISENSE3+
IOUT3
+5V
R265
D
10
CAP2
J7
S
9
U8:IOUT3
U8:ISENSE3-
PGND
LV_OUT1
DGND
5
DGND
8
47k
0603
DE2_A
C44
1 μF 25V
DGND
12VLDO1
R73
44
43
DGND
2
10k
0603
CAP1
DGND
D
7
R72
DE2
HV_IN1
PWM3L_A
DGND
S
5VLDO1
HV_IN2
45
DGND
DVDD
D
6
PWM3L
PWM2L_A
PWM3H_A
S
10k
0603
LV_OUT2
PWM2H_A
47
46
D
5
R167
DGND
PWM3H
S
JP2
CE
48
D
47k
0603
PWM2L
S
2 1
R74
4
PWM2H
PWM1H
2 1
3
CE_A
PWM1L
3
2
MOTOR A
1
PWM1L_A
PWM1H_A
Motor Control 10-24V Driver Board (Dual/Single)
DS50002261A-page 58
FIGURE A-1:
14
U9:ISENSE2+
DVDD
R199
10k
0603
15
ILIMIT_OUT_B
16
U9:IOUT1
17
U9:ISENSE1-
18
U9:ISENSE1+
19
20
21
22
23
24
49
VDD
IOUT2
PGND
ISENSE2+
PGND
ILIMIT_OUT
+12V
I_OUT1
VBA
I_SENSE1-
VBB
I_SENSE1+
VBC
PGND
FA
PGND
FB
LA
FC
LB
HA
LC
37
D23
PWM3L_B
PWM3H_B
J9
PHASE3_MB
PHASE2_MB
PHASE1_MB
SSA24
SSA24
C12
4.7 μF
25V
VB2_B
VB3_B
+5V
SSA24
J4
C50
3.3 μF
25V
0805
PHASE1_MB
3.3 μF
25V
0805
1
2
3
4
5
6
C51
3.3 μF
25V
0805
+5V
R48
R49
R50
R51
4.7k
4.7k
4.7k
4.7k
ED500/6DS
28
D13
PHASE3_MB
10R
R169
D14
26
D15
25
10R
R170
DNP
R85
10R
R171
DNP
TP37
GT3H_B
DNP
DNP
R172
10R
DNP
R173
10R
TP39
GT2L_B
DNP
GT2H_B
TP36
DNP
GT3L_B
TP38
GT1L_B
TP40
INVERTER B
D18
R174
10R
DNP
GT1H_B
IPB054N06N3 G
G
1k
U9:ISENSE3-
1k
U9:ISENSE3+
10 –
U9-A
R149
470 pF
SHUNT_HIGH_2_B
DGND
100 pF
DGND
DGND
VDC_B
GT1L_B
C61
DNP
GT2H_B
IPB054N06N3 G
G
R5
332k
0603
C7
Q5
4.7 μF
50V
1210
PGND
PGND
C62
DNP
R6
332k
0603
IPB054N06N3 G
G
Q10
GT2L_B
C8
Q6
4.7 μF
50V
1210
PGND
PGND
PHASE2_MB
R10
IPB054N06N3 G
G
GT3H_B
IPB054N06N3 G
G
R11
332k
0603
Q11
IPB054N06N3 G
G
GT3L_B
R12
Q12
332k
0603
SHUNT_HIGH_3_B
13 –
U9-B
U9:ISENSE2U9:ISENSE2+
14
TP14
R156
0R
0603
1k
470 pF
C76
SHUNT_LOW_SUM_B
AGND
DNP
AGND
Rsh4
.015 R
OARS-3
Rsh6
VREF_EXT
R219
47k
Rsh3
.015 R
OARS-3
SHUNT_HIGH_SUM_B
DNP
R159
C77
IPHASE2_MB
U9:IOUT2
12
+
Rsh8
.015 R
OARS-3
R14
.015 R
OARS-3
0R
0603
PGND
J14
DNP
1 2 3 4 5 6 7
SHUNT_HIGH_SUM_B
SHUNT_HIGH_3_B
C78
DNP
470 pF
R160
R161
R162
1k
1k
R164
1k
C79
1000 pF
100V
R165
0603
1k
R32
C81
DNP
470 pF
U9:ISENSE1-
R166
DS50002261A-page 59
DNP
PWM2H_B
TP15
5VLDO2
DGND
IBUS_MB
U9:IOUT1
0R
0603
1k
GREEN
DGND
Tolerance of all resistors in the page must be 1%
R20
DNP
R19
DNP
R35
1k
AGND
R280
DNP
PWM2L_B
PWM2H_B
R120
1k
R121
1k
D32
GREEN
DGND
D33
GREEN
DGND
PWM3H_B
R122
1k
D34
GREEN
DGND
AGND
VDC_B
PWM3L_B
R123
1k
R17
R124
1k
18k
0603
TP10
D35
GREEN
DGND
VBUS_B
D36
R18
GREEN
1.8k
0603
DE2_TX_B
C10
0.1 μF
16V
0603
DGND
AGND
AGND
DE2_RX_B
R24
2k
0603
SHUNT_HIGH_3_B
R62
1k
SHUNT_HIGH_SUM_B
R64
DNP
SHUNT_HIGH_2_B
R31
DNP
SHUNT_HIGH_1_B
R22
DNP
C18
DNP
R33
C27
0.1 μF
25V
47k
AGND
470pF
5VLDO2
R60
C28
TP2
D31
SHUNT_HIGH_SUM_B
SHUNT_HIGH_SUM_B
VREF_EXT
0R
R225
DNP
SHUNT_HIGH_SUM_B
PWM3L_B
DNP
PWM1L_B
R119
R34
PWM3H_B
C80
AGND
PWM1H_B
SHUNT_LOW_SUM_B
PWM2L_B
R163
16
+
18
R279
47k R221
AGND
17 –
U9-C
SHUNT_HIGH_SUM_B
PWM1L_B
DNP
U9:ISENSE1+
SHUNT_HIGH_SUM_B
PWM1H_B
R220
47k
1000 pF
100V
0603
1k
4
5
SHUNT_LOW_SUM_B
R21
-A
VDD
OUTA
R63
1k
3
U2
TP43
MCP6021
1
R61
IPHASE3_MB
0R
0603
VSS
+A
2
AGND
SHUNT_HIGH_SUM_B
470 pF
AGND
R71
AGND
AGND
R277
47k
0R
R226
R276
DNP
DNP
VREF_EXT
AGND
DE2_B
C29
DNP
C34
C63
DNP
PGND
PHASE3_MB
SHUNT_HIGH_2_B
1000 pF
100V
R158
0603
1k
91k
100 pF
DGND
SHUNT_HIGH_1_B
DNP
1k
C75
DGND
C26
AGND
R218
47k
R155
R157
91k
100 pF
DGND
R59
C25
R153
DNP
AGND
R154
PGND
PHASE1_MB
332k
0603
VREF_EXT
R217
47k
C74
1k
C72
DNP
470 pF
SHUNT_HIGH_SUM_B
0R
0603
R152
C73
AGND
IPHASE1_MB
U9:IOUT3
9
+
11
TP13
4.7 μF
50V
1210
S
DNP
1000 pF
100V
R151
0603
1k
Note:
The operational amplifiers,
U9-A, U9-B, U9-C shown
in the schematic, are
internal to the MCP8024.
R216
R148
C6
Q4
S
332k
0603
47k
470 pF
91k
100 pF
DGND
R58
C24
R88
R146
C70
HALLC_MB
R57
C23
Board Schematics and Layout
AGND
HALLB_MB
HOME_MB
91k
R4
C71
47k
R86
D16
PGND
DNP
1k
R55
R84
TP35
GT1H_B
DNP
DNP
HOME_B
HC_B
HALLA_MB
DGND
R87
R150
47k
DGND
DNP
SHUNT_HIGH_1_B
47k
R54
R83
PAD
R147
R53
R56
PHASE3_MB
PGND
PHASE2_MB
HB_B
47k
PHASE1_MB
D17
SHUNT_HIGH_SUM_B
HA_B
R52
PHASE2_MB
27
HC
D22
C49
VB1_B
29
MCP8024
PGND
OSTVI030152
12VLDO2
31
DGND
D24
PGND
30
DGND
0R
1206
VB3_B
34
32
DGND
R270
0R
1206
VB2_B
C14
33
DGND
R269
0R
1206
VB1_B
VDC_B
10 μF 50V
2220
TP42
35
DGND
R268
TP41
PGND
36
HB
PGND
4.7 μF
25V
38
LX
ISENSE2-
5VLDO2
39
47k
0603
D
13
VDD
ISENSE3+
R211
47k
0603
S
12
U9:IOUT2
U9:ISENSE2-
ISENSE3-
R210
47k
0603
DGND
C17
40
FB
R209
47k
0603
TP18
41
+5V
IOUT3
1 μF 25V
R208
47k
0603
12VLDO2
DE2_B
C45
42
R207
47k
0603
D
11
U9:ISENSE3+
LV_OUT1
44
43
R206
S
10
U9:ISENSE3-
CAP2
47k
0603
D
9
U9:IOUT3
CAP1
PGND
R75
PWM3L_B
S
DGND
8
DE2
HV_IN1
B
DVDD
PWM3H_B
D
10k
0603
5VLDO2
PWM3L
HV_IN2
PWM2L_B
45
S
7
R125
LV_OUT2
PWM2H_B
46
D
6
10k
0603
PWM3H
D
5
R168
DGND
CE
48
47
2 1
JP3
PWM2L
3
R76
47k
0603
4
PWM2H
MOTOR B
3
CE_B
PWM1L
PWM1H
PWM2L_B
2
PWM1H_B
PWM2H_B
U9
1
PWM1L_B
PWM1H_B
PWM1L_B
MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE) SCHEMATIC REVISION 1.0 (SHEET 2 OF 3)
2 1
2014 Microchip Technology Inc.
FIGURE A-2:
MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE) SCHEMATIC REVISION 1.0 (SHEET 3 OF 3)
Both
J13
IPHASE3_MB
IBRAKE_B
R197
DNP
R227
VBUS_A
DNP
DGND
R194
0R
DE2_RX_B
R195
HALLC_MA
DNP
R228
IBUS_MB
DNP
DE2_TX_B
A16
TP PAD PCB 1.6x1
BRAKE_EN_A
SHUNT_LOW_SUM_A
SHUNT_HIGH_SUM_A
IPHASE2_MB
R191
0R
FAULT_MA
R193
DE2_RX_A
DNP
SHUNT_HIGH_SUM_A
DGND
SHUNT_HIGH_1_A
DE2_TX_A
HALLA_MA
VBUS_B
CE_A
B27
CE_B
TP PAD PCB 1.6x1
HOME_MB
PWM1L_A
HALLC_MB
HALLA_MB
HALLB_MB
PWM2H_A
PWM2L_A
PWM3H_A
DGND
PWM2L_B
PWM1L_B
PWM3H_B
PWM3L_B
AVDD
+5V
C94
1 μF
25V
DC+
0603
J8
RECN_MA
AGND AGND
C8
R229
PHASE2_MA
R105
30.1k
C10
301R
AGND AGND
R89
PHASE3_MA
R97
R98
30.1k
301R
IPHASE1_MB
TP19
VPHASE3_MA
R192 DNP
+A
TP48
R234
280K
0603
2.2M
R240
2
DNP
3
R238
4
BRAKE_EN_A
PGND
.C24
R106
PHASE1_MB
R107
30.1k
VPHASE1_MB
301R
BRAKE_SHUNT_LOW_A
C33
PWM3L_A
C34
PWM1H_B
C35
PWM2H_B
301R
TP50
R109
30.1k
301R
TP32
VPHASE3_MB
1.2k
0603
R247
5
18k
0603
3
AGND AGND
SCREW 2-56x.500
Qty 2
DGND
VDC_B
Mounting hardware for J13
PGND
280K
0603
R252
1.8k
0603
For wire jumper
AGND
R272
AGND
+12V
-A
VDD
R246
TP54
1 2
VDC_A
C30
470 μF
P5D10H20
PGND
TP7
10 mm
Populate
by default
TP8
J6
PGND
C64
C31
PGND
10 μF 50V
5KP26A-E3/54
63V
2220
10 μF
1000 pF
100V
0603
PGND
1
C91
PGND
VIN VOUT
C89
3
PGND
TP58
+12V
C90
U7
MCP65R41/2.4V
1
VSS
PGND
TP53
R250
2
DNP
3
R254
4
BRAKE_EN_B
0.1 μF
0603
25V
PGND
TP59
TP63
PGND
PGND
PGND
TP LOOP Black
PGND
TP LOOP Black
PGND
TP LOOP Black
TP61
C65
1000 pF
100V
0603
63V
2220
10 μF
PGND
PGND
PGND
R262
R263
470R
0603
470R
0603
D1
D2
GREEN
TP11
470 μF
P5D10H20
JACK Power 2.1 mm Male
C2
1000 pF
100V
0603
PGND
Tolerance of all resistors in the page must be 1%
ILIMIT_OUT_B
R132
0R
0603
DGND
FAULT_MB
GREEN
DGND
R264
1k
0603
BRAKE_SHUNT_LOW_B
R258
4
D3
AGND
TP62
TP LOOP Black TP LOOP Red
J16
VDD
OUTA
TP5
BRAKE_SHUNT_HIGH_B
3
DGND
TP LOOP Black
DVDD
R27
DNP
FAULT_MA
R222
0R
1206
DGND
DGND
R261
0R
1206
AGND AGND
0R
1206
PGND DGND
VSS
+A
2
AGND
R274
47k
C15
0.1 μF
25V
R29
R30
0R
R28 TP16
DVDD
DGND
DVDD
DNP
0R
1
2
A
Y
B
DGND
PGND
DGND
TP LOOP Black
AGND
DNP
PGND
FAULT_MB
R223
R253
U1
4
SN74AHC1G09DBVR
R25
TP12
4.7k
0603
R26
0R
0603
FAULT_AB
Q14
IPB054N06N3 G
332k
0603
5
5VLDO2
C88
PGND
0.1 μF
0603
25V
U12
MCP6021
-A
2k
R260
DVDD
GREEN
PGND
C38
DNP
22R
0603
PGND
47k
0603
PGND
TP LOOP Black
5
C1
PGND
AGND
TP LOOP Black
+12V
+12V
DC+
DC+
1
3
2
+5V
GND
G
6
.015 R
OARS-3
R257
DNP
DVDD
GND
DNP
R251
Rsh10
R273
D47
5KP26A-E3/54
OUT
8
7
BRAKE_SHUNT_LOW_B
PGND
TP64
TP4
DVDD
3
-24V Power Connector
C33
NC
5VLDO2
TP60
2 1
470 μF
P5D10H20
OUT
BRAKE_SHUNT_HIGH_B
VREF_EXT
C32
VDD
IN
PGND
2k
PGND
D51
VDD
10k
0603
10 μF 50V
PGND
SS35
TAB .250
TC1412N
R255
C87
D50
5 mm apart
TP52
PGND
U10
1
R248
2.2M
VDC_B
OSTVI022152
1 μF
25V
0603
VREF OUTA
+A
TAB .250
C86
0.1 μF
0603
25V
C92
0.1 μF
0603
25V
.33 μF 50V
0805
L7812CD2T-TR
PGND
PGND
TP55
U11
DC+
D46
1 2
2014 Microchip Technology Inc.
OSTVI022152
TP51
C85
5
Populate
by default
GND
TP6
VDC_B
22R
0603
DGND
PGND
2
J1
180R
0603
10 mm
C83
1000 pF
50V
0603
DNP
R256
PGND
TP3
IBRAKE_A
1k
0603
R271
DGND
R249
NUT #2-56 SS
AGND
DVDD
4
2k
0603
DNP
AGND
R243
1
VSS
DVDD
R245
10k
0603
Qty 2
PGND
VDD
+A
0.1 μF
0603
25V
R112
C57
PGND
TP49
47k
C38
DC+
U6
MCP6021
-A
3
DNP
R94
R108
C37
C40
C82
0.1 μF
0603
25V
C84
FAULT_MB
IPB054N06N3 G
AGND
AGND AGND
C39
4
R244
10k
0603
DGND
PHASE3_MB
C36
TP34
VPHASE2_MB
2k
0603
DNP
C32
R242
R103
C54
Q13
332k
0603
.015 R
OARS-3
2k
R93
R100
30.1k
C31
BRAKE_SHUNT_HIGH_A
TP31
VREF_EXT
AGND AGND
R99
PHASE2_MB
R237
5VLDO1
OUTA
C29
PWM1H_A
G
22R
0603
Rsh9
2k
RECN_MB
C30
R235
6
PGND
5VLDO1
C27
C28
GND
7
5
BRAKE_SHUNT_LOW_A
R241
10k
TP33 0603
2k
0603
DNP
OUT
DNP
BRAKE_SHUNT_HIGH_A
PGND
R111
C56
SHUNT_HIGH_SUM_A
OUT
NC
8
PGND
R92
TP PAD PCB 1.6x1
C26
IN
GND
47k
0603
DGND
C25
VDD
10k
0603
C22
C24
TAB .250
D49
VDD
PGND
SHUNT_HIGH_3_A
SHUNT_HIGH_2_A
SS35
TC1412N
R239
C69
0.1 μF
0603
25V
D48
5 mm apart
PGND
U5
1
R232
C21
C23
1 μF
25V
0603
TP47
PGND
AGND AGND
SHUNT_HIGH_SUM_A
TAB .250
C68
0.1 μF
0603
25V
U4
MCP65R41/2.4V
1
VSS
DNP
180R
0603
C20
TP46
C67
VREF OUTA
R233
1.8k
0603
2k
0603
DNP
C19
VDD
VDC_A
22R
0603
DGND
R236
10k
0603
HOME_MA
R190 0R
-A
R230
DGND
R102
C53
C17
C18
3
DGND
BRAKE_EN_B
C16
5
18k
0603
DGND
C14
C15
R231
VDC_A
TP PAD PCB 1.6x1
HALLB_MA
C13
4
10k
0603
2k
0603
DNP
.C12
C12
TP21
VPHASE2_MA
R110
C55
C11
DVDD
R90
R104
C9
+12V
0.1 μF
0603
25V
1.2k
0603
DC+
2 1
TP20
C7
OSTT7022150
J5
DVDD
C66
2k
0603
DNP
5650874-4
AGND
TP45
10k
0603
R101
C52
C6
TP22
VPHASE1_MA
D
RECN_MB
VREF_EXT
R96
301R
S
IBRAKE_A
VPHASE3_MB
0R
DGND
VPHASE3_MA
R95
30.1k
D
IPHASE3_MA
R196
C5
PHASE1_MA
S
RECN_MA
VPHASE2_MB
5
VPHASE2_MA
C4
2
VPHASE1_MA
R91
C3
6
FAULT_AB
C2
2
DGND
VPHASE1_MB
DVDD
C1
6
A1
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
A8
B8
A9
B9
A10
B10
A11
B11
A12
B12
A13
B13
A14
B14
A15
B15
A16
B16
A17
B17
A18
B18
A19
B19
A20
B20
A21
B21
A22
B22
A23
B23
A24
B24
A25
B25
A26
B26
A27
B27
A28
B28
A29
B29
A30
B30
A31
B31
A32
B32
A33
B33
A34
B34
A35
B35
A36
B36
A37
B37
A38
B38
A39
B39
A40
B40
2
DVDD
1
AGND
TP56
R259
1k
0603
IBRAKE_B
C93
1000 pF
50V
0603
AGND
Motor Control 10-24V Driver Board (Dual/Single)
DS50002261A-page 60
FIGURE A-3:
Board Schematics and Layout
FIGURE A-4:
MOTOR CONTROL 10-24V DRIVER BOARD (DUAL/SINGLE) LAYOUT
2014 Microchip Technology Inc.
DS50002261A-page 61
Motor Control 10-24V Driver Board (Dual/Single)
NOTES:
DS50002261A-page 62
2014 Microchip Technology Inc.
MOTOR CONTROL 10-24V
DRIVER BOARD (DUAL/SINGLE)
USER’S GUIDE
Appendix B. Electrical Specifications
B.1
INTRODUCTION
This chapter provides the electrical specifications for the Motor Control 10-24V Driver
Board (Dual/Single) (see Table B-1).
TABLE B-1:
ELECTRICAL SPECIFICATIONS
Parameter
Input DC Voltage
Operating Range
10-24V ±10% (9-26.4V)
Maximum Input Current through Connector J5
2.5A
Maximum Input Current through Connector J8
30A
Maximum Input Current through Connector J1 or J6
15A
Continuous Output Current per Phase @ +25ºC
10A (RMS)
Brake Switch Continuous Current @ +25ºC
10A (RMS)
At ambient temperature (+25ºC), the board remains within the thermal range when
operating with continuous output currents of up to 10A (RMS) at the rated voltage.
2014 Microchip Technology Inc.
DS50002261A-page 63
Motor Control 10-24V Driver Board (Dual/Single)
NOTES:
DS50002261A-page 64
2014 Microchip Technology Inc.
MOTOR CONTROL 10-24V
DRIVER BOARD (DUAL/SINGLE)
USER’S GUIDE
Appendix C. Component Selection
C.1
INTRODUCTION
This chapter provides detailed information on the component selection of the motor
current amplifier, brake current amplifier and the hardware brake enable circuit.
C.2
HIGHLIGHTS
This chapter covers the following topics:
• Motor Current Amplifier Configuration
• Brake Current Amplifier Configuration
• Hardware Brake Enable Circuit Configuration
C.3
MOTOR CURRENT AMPLIFIER CONFIGURATION
An amplifier circuit for sensing the motor currents on the Motor Control 10-24V Driver
Board (Dual/Single), Inverter A and Inverter B sections, is shown in Figure C-1.
2014 Microchip Technology Inc.
DS50002261A-page 65
Motor Control 10-24V Driver Board (Dual/Single)
FIGURE C-1:
MOTOR CURRENT SENSING AMPLIFIER
C
VREF_EXT
D
U9
MCP8024
B
E
Filter,
Feedback
and Bias
Circuit
SHUNT_HIGH_1_B
A
SHUNT_HIGH_SUM_B
C
11
F
10
E
14
+
Op Amp A
9
IPHASE1_MB
–
D
VREF_EXT
B
SHUNT_HIGH_2_B
A
SHUNT_HIGH_SUM_B
Filter,
Feedback
and Bias
Circuit
F
13
E
18
+
Op Amp B
–
12
IPHASE2_MB
Voltage
Divider
VREF_EXT
D
C
B
SHUNT_HIGH_SUM_B
A
SHUNT_LOW_SUM_B
Filter,
Feedback
and Bias
Circuit
F
Voltage
Divider
VREF_EXT
17
+
Op Amp C
16
IBUS_MB
–
U2
MCP6021
D
C
B
SHUNT_HIGH_3_B
A
SHUNT_HIGH_SUM_B
E
Filter,
Feedback
and Bias
Circuit
F
Voltage
Divider
VREF_EXT
3
4
+
1
IPHASE3_MB
–
U3
MCP6021
D
C
B
SHUNT_HIGH_3_A
A
SHUNT_HIGH_SUM_A
DS50002261A-page 66
E
Filter,
Feedback
and Bias
Circuit
F
3
4
+
1
IPHASE3_MA
–
2014 Microchip Technology Inc.
Component Selection
Figure C-2 shows the amplifier gain setting.
FIGURE C-2:
AMPLIFIER GAIN SETTING
Filter, Feedback and Bias Circuit
C
47k
D
47k
470 pF
1k
1k
E
B
1000 pF
A
F
1k
1k
470 pF
Equation C-1 provides the amplifier gain setting calculations. Equation C-2 and
Equation C-3 show the cutoff frequency calculations using a differential-mode filter and
a common-mode filter, respectively.
EQUATION C-1:
AMPLIFIER GAIN
47 k - = 23.5
Differential Amplifier Gain = --------------------2 1 k
EQUATION C-2:
CUTOFF FREQUENCY DIFFERENTIAL-MODE FILTER
1
Differential mode f –3dB ------------------------------------------------------------------------------------- 65 kHz
pF- + 1000 pF
2 2 1 k 470
----------------
2
EQUATION C-3:
CUTOFF FREQUENCY COMMON-MODE FILTER
1
Common mode f – 3dB ------------------------------------------------ 340 kHz
2 1 k 470 pF
2014 Microchip Technology Inc.
DS50002261A-page 67
Motor Control 10-24V Driver Board (Dual/Single)
C.4
BRAKE CURRENT AMPLIFIER CONFIGURATION
Figure C-3 shows an amplifier circuit for sensing current flow through brake switches
in the Motor Control 10-24V Driver Board (Dual/Single). Figure C-4 shows the brake
current amplifier configuration.
FIGURE C-3:
BRAKE CURRENT SENSING AMPLIFIER
Voltage
Divider
VREF_EXT
U6
MCP6021
D
C
B
BRAKE_SHUNT_HIGH_A
A
BRAKE_SHUNT_LOW_A
E
Feedback
and Bias
Circuit
+
1
F
Voltage
Divider
VREF_EXT
3
4
IBRAKE_A
–
U12
MCP6021
D
C
B
BRAKE_SHUNT_HIGH_B
A
BRAKE_SHUNT_LOW_B
DS50002261A-page 68
E
Feedback
and Bias
Circuit
3
+
1
F
4
IBRAKE_B
–
2014 Microchip Technology Inc.
Component Selection
FIGURE C-4:
BRAKE CURRENT AMPLIFIER CONFIGURATION
Feedback and Bias Circuit
C
47k
D
47k
1k
B
E
F
A
1k
EQUATION C-4:
AMPLIFIER GAIN
k- = 23.5
Differential Amplifier Gain = 47
-------------2 k
2014 Microchip Technology Inc.
DS50002261A-page 69
Motor Control 10-24V Driver Board (Dual/Single)
C.5
HARDWARE BRAKE ENABLE CIRCUIT CONFIGURATION
Figure C-5 shows the hardware brake enable circuit comparator with hysteresis in the
Motor Control 10-24V Driver Board (Dual/Single).
FIGURE C-5:
HARDWARE BRAKE ENABLE CIRCUIT COMPARATOR WITH
HYSTERESIS
VREF (2.4V)
U4
5
MCP65R41/2.4V
Reference
VR
Voltage
Divider
3
+
4
1
Hardware
Brake Enable A
1
Hardware
Brake Enable B
–
VDC_A
DC Bus
Voltage
Divider
VIN
RF
RIN
VREF (2.4V)
U7
5
MCP65R41/2.4V
Reference
Voltage
Divider
3
VR
4
+
–
VDC_B
DC Bus
Voltage
Divider
DS50002261A-page 70
VIN
RIN
RF
2014 Microchip Technology Inc.
Component Selection
Figure C-6 shows the hysteresis diagram of the non-inverting comparator.
FIGURE C-6:
HYSTERESIS DIAGRAM – NON-INVERTING COMPARATOR
VOUT
VDD
VOH
High-to-Low
Low-to-High
VOL
VSS
VSS
VTHL
VTLH
VDD
Equation C-5 determines the input threshold voltages.
EQUATION C-5:
INPUT THRESHOLD VOLTAGES
RIN
RIN
V TLH = V R 1 + ------- – V OL ------
RF
RF
RIN
RIN
V THL = V R 1 + ------- – V OL --------
RF
R
F
Where:
VOL is the saturation voltage in the low state at the comparator output.
VOH is the saturation voltage in the high state at the comparator output.
VTLH is the threshold voltage from low-to-high.
VTHL is the threshold voltage from high-to-low.
VR is the comparator reference input voltage.
Equation C-6 determines RF, RIN and VR from the threshold voltage.
EQUATION C-6:
DETERMINING RF, RIN AND VR FROM THRESHOLD VOLTAGE
V TLH + V THL
V TRIP = -----------------------------2
RF
V OH + V OL
------- = -----------------------------VTLH – VTHL
R IN
R IN VOH + V OL
RF
+ -------------------------- V TRIP
V R = ------------------------------2 R IN + RF R IN + R F
Where:
VTRIP is the average trip voltage at the middle of the comparator hysteresis.
2014 Microchip Technology Inc.
DS50002261A-page 71
Motor Control 10-24V Driver Board (Dual/Single)
C.5.1
Setting Trip Voltage
The example calculations to set the DC bus upper and lower trip points, DC Bus Voltage
Low-to-High (VDCLH) at 27.5V and DC Bus Voltage High-to-Low (VDCHL) at 23.5V for the
hardware brake enable circuit in the Motor Control 10-24V Driver Board (Dual/Single) are
shown in Equation C-7. The comparator supply voltage is 3.3V, the DC bus voltage
divider circuit ratio is 11, VOH comparator is 3.1V and VOL comparator is 0.2V.
The trip voltages scaled by the DC bus voltage divider circuit ratio (VTLH and VTHL) can
be calculated as shown in Equation C-8.
EQUATION C-7:
THRESHOLD VOLTAGE CALCULATIONS
27.5
V TLH = ---------- = 2.5V
11
23.5
V THL = ---------- = 2.136V
11
From VTLH and VTHL, the middle of the hysteresis or average Trip Voltage (VTRIP) is
calculated as shown in Equation C-8.
EQUATION C-8:
CALCULATION FOR AVERAGE TRIP VOLTAGE
2.5V + 2.136V - = 2.318V
V TRIP = --------------------------------------2
From VOH, VOL, VTLH and VTHL, the hysteresis setting resistor ratio can be determined. By
selecting one resistor value, the other resistor value can be calculated as in Equation C-9.
EQUATION C-9:
HYSTERESIS SETTING RESISTOR RATIO VALUE
RF
3.1V – 0.2V
------- = --------------------------------------- = 7.967
R IN
2.5V – 2.136V
If RIN is 280 k
R F = 7.967 280 k = 2230.76 k 2200 k
After calculating the hysteresis setting resistor values, the Comparator Reference
Voltage (VR) input can be calculated as in Equation C-10.
EQUATION C-10: COMPARATOR REFERENCE (VR) INPUT CALCULATION
2200 k
280 k 3.1V + 0.2V - + --------------------------------------------------V R = -------------------------------------------------------- 2.318
2 280 k + 2200 k 280 k + 2200 k
= 0.186V + 2.056V = 2.24V
The Comparator Reference Voltage (VR) input is generated by the voltage divider
circuit supplied by the Comparator Reference Voltage (VREF) output at 2.4V.
This voltage divider ratio can be calculated as, 2.4V/2.242V = 1.07.
Then, the voltage divider resistors can be determined:
If R2 = 18 k, then R1 =18 k 1.07 = 1.2 k
DS50002261A-page 72
2014 Microchip Technology Inc.
Component Selection
C.6
HARDWARE BRAKE ENABLE CIRCUIT CONFIGURATION RESISTORS
Configuration resistors for setting the DC bus upper and lower trip points for comparator
supply voltages of 3.3V and 5V are provided in Table C-1 and Table C-2.
TABLE C-1:
CONFIGURATION RESISTORS IN HARDWARE BRAKE ENABLE
CIRCUIT A
Resistor Designator
Resistor Value to Set VDCHL @ 23.5V and VDCLH @ 27.5V,
If the Comparator Supply Voltage is
3.3V
R233
280 k
280 k
R234
2200 k
3600 k
R231
18 k
36 k
R229
1.2 k
1 k
TABLE C-2:
CONFIGURATION RESISTORS IN HARDWARE BRAKE ENABLE
CIRCUIT B
Resistor Designator
2014 Microchip Technology Inc.
5V
Resistor Value to Set VDCHL @ 23.5V and VDCLH @ 27.5V,
If the Comparator Supply Voltage is
3.3V
5V
R249
280 k
280 k
R250
2200 k
3600 k
R247
18 k
36 k
R245
1.2 k
1 k
DS50002261A-page 73
Worldwide Sales and Service
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://www.microchip.com/
support
Web Address:
www.microchip.com
Asia Pacific Office
Suites 3707-14, 37th Floor
Tower 6, The Gateway
Harbour City, Kowloon
Hong Kong
Tel: 852-2943-5100
Fax: 852-2401-3431
India - Bangalore
Tel: 91-80-3090-4444
Fax: 91-80-3090-4123
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
Australia - Sydney
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
Atlanta
Duluth, GA
Tel: 678-957-9614
Fax: 678-957-1455
China - Beijing
Tel: 86-10-8569-7000
Fax: 86-10-8528-2104
Austin, TX
Tel: 512-257-3370
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
Boston
Westborough, MA
Tel: 774-760-0087
Fax: 774-760-0088
Chicago
Itasca, IL
Tel: 630-285-0071
Fax: 630-285-0075
Cleveland
Independence, OH
Tel: 216-447-0464
Fax: 216-447-0643
Dallas
Addison, TX
Tel: 972-818-7423
Fax: 972-818-2924
Detroit
Novi, MI
Tel: 248-848-4000
Houston, TX
Tel: 281-894-5983
Indianapolis
Noblesville, IN
Tel: 317-773-8323
Fax: 317-773-5453
Los Angeles
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
New York, NY
Tel: 631-435-6000
San Jose, CA
Tel: 408-735-9110
Canada - Toronto
Tel: 905-673-0699
Fax: 905-673-6509
DS50002261A-page 74
China - Chongqing
Tel: 86-23-8980-9588
Fax: 86-23-8980-9500
China - Hangzhou
Tel: 86-571-8792-8115
Fax: 86-571-8792-8116
China - Hong Kong SAR
Tel: 852-2943-5100
Fax: 852-2401-3431
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
China - Shenzhen
Tel: 86-755-8864-2200
Fax: 86-755-8203-1760
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
India - Pune
Tel: 91-20-3019-1500
Japan - Osaka
Tel: 81-6-6152-7160
Fax: 81-6-6152-9310
Japan - Tokyo
Tel: 81-3-6880- 3770
Fax: 81-3-6880-3771
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Germany - Dusseldorf
Tel: 49-2129-3766400
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Germany - Pforzheim
Tel: 49-7231-424750
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Italy - Venice
Tel: 39-049-7625286
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
Poland - Warsaw
Tel: 48-22-3325737
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
Taiwan - Hsin Chu
Tel: 886-3-5778-366
Fax: 886-3-5770-955
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
Sweden - Stockholm
Tel: 46-8-5090-4654
UK - Wokingham
Tel: 44-118-921-5800
Fax: 44-118-921-5820
Taiwan - Kaohsiung
Tel: 886-7-213-7830
Taiwan - Taipei
Tel: 886-2-2508-8600
Fax: 886-2-2508-0102
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
03/25/14
2014 Microchip Technology Inc.