TC115
PFM/PWM
Evaluation Board
User’s Guide
© 2009 Microchip Technology Inc.
DS51578B
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•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
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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
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Trademarks
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PICSTART, rfPIC, SmartShunt and UNI/O are registered
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Company are registered trademarks of Microchip Technology
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dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, In-Circuit Serial
Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM,
PICDEM.net, PICtail, PIC32 logo, PowerCal, PowerInfo,
PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total
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All other trademarks mentioned herein are property of their
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© 2009, Microchip Technology Incorporated, Printed in the
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Printed on recycled paper.
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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.
DS51578B-page ii
© 2009 Microchip Technology Inc.
TC115 EVALUATION BOARD
USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 1
Chapter 1. Product Overview
1.1 Introduction ..................................................................................................... 5
1.2 What is the TC115 Evaluation Board? ........................................................... 5
1.3 What the TC115 Evaluation Board kit includes? ............................................ 5
Chapter 2. Installation and Operation
2.1 Introduction ..................................................................................................... 7
2.2 Features ......................................................................................................... 7
2.3 Getting Started ............................................................................................... 8
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................... 9
A.2 Board Schematic .......................................................................................... 10
A.3 Board – Top Overlay .................................................................................... 11
A.4 Board – Top Layer ....................................................................................... 12
A.5 Board – Bottom Layer .................................................................................. 13
Appendix B. Bill of Materials (BOM)
Worldwide Sales and Service .................................................................................... 16
© 2009 Microchip Technology Inc.
DS51578B-page iii
TC115 Evaluation Board User’s Guide
NOTES:
DS51578B-page iv
© 2009 Microchip Technology Inc.
TC115 EVALUATION BOARD
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
“DSXXXXXA”, where “XXXXX” 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 on-line help.
Select the Help menu, and then Topics to open a list of available on-line help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
TC115 Evaluation Board. Items discussed in this chapter include:
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Recommended Reading
The Microchip Web Site
Customer Support
Document Revision History
DOCUMENT LAYOUT
This document describes how to use the TC115 Evaluation Board as a development
tool to emulate and debug firmware on a target board. The manual layout is as follows:
• Chapter 1. “Product Overview” – Important information about the TC115
Evaluation Board.
• Chapter 2. “Installation and Operation” – Includes a description of the
evaluation board, as well as instructions on how to get started.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the TC115 Evaluation Board.
• Appendix B. “Bill of Materials (BOM)” – Lists the parts used to build the TC115
Evaluation Board.
© 2009 Microchip Technology Inc.
DS51578B-page 1
TC115 Evaluation Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Represents
Referenced books
Emphasized text
A window
A dialog
A menu selection
A field name in a window or
dialog
A menu path
MPLAB® IDE User’s Guide
...is the only compiler...
the Output window
the Settings dialog
select Enable Programmer
“Save project before build”
A dialog button
A tab
A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
A key on the keyboard
Click OK
Click the Power tab
4‘b0010, 2‘hF1
Italic Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe
character: { | }
Ellipses...
Choice of mutually exclusive
arguments; an OR selection
Replaces repeated text
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
0xFF, ‘A’
file.o, where file can be
any valid filename
mcc18 [options] file
[options]
errorlevel {0|1}
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
N‘Rnnnn
Text in angle brackets < >
Courier New font:
Plain Courier New
Represents code supplied by
user
DS51578B-page 2
Examples
File>Save
Press <Enter>, <F1>
var_name [,
var_name...]
void main (void)
{ ...
}
© 2009 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user's guide describes how to use TC115 Evaluation Board. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources.
• TC115 Data Sheet - “PFM/PWM Step-Up DC/DC Converter” (DS21361)
This data sheet provides detailed information regarding the TC115 step-up converter.
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, 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 listing
• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives
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.
DOCUMENT REVISION HISTORY
Revision B (January 2009)
• Updated Board Schematic (see Appendix A. “Schematic and Layouts”).
• Updated Appendix B. “Bill of Materials (BOM)”.
Revision A (September 2005)
• Initial Release of this Document.
© 2009 Microchip Technology Inc.
DS51578B-page 3
TC115 Evaluation Board User’s Guide
NOTES:
DS51578B-page 4
© 2009 Microchip Technology Inc.
TC115 EVALUATION BOARD
USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
The TC115 Evaluation Board is used to evaluate Microchip’s TC115 in a single-cell
boost converter application. As provided, the TC115 Evaluation Board generates a
3.0V output from a single-cell battery.
This chapter covers the following topics:
• What is the TC115 Evaluation Board?
• What the TC115 Evaluation Board Kit Includes?
1.2
WHAT IS THE TC115 EVALUATION BOARD?
The TC115 Evaluation Board is a complete, step-up, switch-mode, dc-dc power
converter. The TC115 Evaluation Board generates a regulated 3.0V output at load
currents up to 110 mA. Different output voltages are obtainable by replacing the fixed
3.0V output TC115 with a fixed 3.3V or 5.0V device. Since the TC115 operates from a
minimum input voltage of 0.9V, the input voltage can be provided by a single-cell
battery.
The TC115 Evaluation Board is provided with an aluminum electrolytic output
capacitor. However, there are ceramic and tantalum capacitor pads so other capacitor
technologies can be evaluated.
Test points are provided for input power, output load and shutdown control.
1.3
WHAT THE TC115 EVALUATION BOARD KIT INCLUDES?
This TC115 Evaluation Board Kit includes:
• The TC115 Evaluation Board (102-00074)
• Analog and Interface Products Demonstration Boards CD-ROM (DS21912)
includes:
- TC115 Evaluation Board User’s Guide (DS51578)
© 2009 Microchip Technology Inc.
DS51578B-page 5
TC115 Evaluation Board User’s Guide
NOTES:
DS51578B-page 6
© 2009 Microchip Technology Inc.
TC115 EVALUATION BOARD
USER’S GUIDE
Chapter 2. Installation and Operation
2.1
INTRODUCTION
The TC115 Evaluation Board demonstrates Microchip’s TC115 PFM/PWM step-up
dc-dc converter in a single cell battery powered application. The TC115 is a
high-efficiency step-up, dc-dc converter for small, low input voltage or battery-powered
systems. The device has a start-up voltage of 0.9V. Due to its integrated MOSFET
feature, the TC115 may be used in conjunction with only an external diode, an inductor
and a capacitor to design a complete boost converter.
The TC115 Evaluation Board is shipped with an aluminum electrolytic output capacitor.
However, there are additional surface-mount pads on the board to evaluate tantalum
or ceramic capacitors.
2.2
FEATURES
The TC115 Evaluation Board has the following features:
•
•
•
•
Regulated 3.0V output voltage
Maximum output current: 110 mA
Automatic PFM/PWM modes of operation
Test point to apply external Enable signal
© 2009 Microchip Technology Inc.
DS51578B-page 7
TC115 Evaluation Board User’s Guide
2.3
GETTING STARTED
The TC115 Evaluation Board is fully assembled and tested for generating a regulated
3.0V output voltage. The TC115 Evaluation Board requires the use of an external input
voltage source (0.9V - 3.0V).
2.3.1
Power Input and Output Connections
2.3.1.1
POWERING THE TC115 EVALUATION BOARD
1. Apply the input voltage to the VIN test point (TP1) and GND test point (TP4). The
input voltage should be limited to the 0V to +3.0V range. For normal operation,
the input voltage should be between +0.9V and +3.0V.
Note 1:
Since the TC115 Evaluation Board is a boost converter, applying an input
voltage greater than 3.0V will result in an output voltage equal to the input
voltage. The TC115 Evaluation Board cannot regulate to an output
voltage that is lower than the input voltage.
2:
With the boost topology, there always exist a path from the input source
to the output load.
2.3.1.2
APPLY THE LOAD TO THE REGULATED OUTPUT VOLTAGE TEST
POINTS
1. To apply a load to the TC115 Evaluation Board, the positive side (+) of the load
should be connected to the VOUT test point (TP3). The negative side (–) of the
load should be connected to the GND test point (TP2).
Note:
Since the TC115 device receives bias from the output, it may be necessary
to remove the load before starting the TC115 Evaluation Board.
2. The TC115 Evaluation Board is supplied with a fixed 3.0V output voltage version
of the TC115. However, by changing the TC115 device, other output voltages can
be achieved. Besides the fixed 3.0V version, the TC115 is also offered in a fixed
3.3V or 5.0V version.
2.3.1.3
ENABLING/DISABLING THE TC115 EVALUATION BOARD
The SHDN pin of the TC115 is pulled-up to VIN to always enable the device. Test point
TP5 can be used to apply an external Enable signal to the device.
DS51578B-page 8
© 2009 Microchip Technology Inc.
TC115 EVALUATION BOARD
USER’S GUIDE
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the following schematic and layout diagrams for the TC115
Evaluation Board:
•
•
•
•
Board Schematic
Board – Top Overlay
Board – Top Layer
Board – Bottom Layer
© 2009 Microchip Technology Inc.
DS51578B-page 9
TC115 Evaluation Board User’s Guide
BOARD SCHEMATIC
M
A.2
DS51578B-page 10
© 2009 Microchip Technology Inc.
Schematic and Layouts
A.3
BOARD – TOP OVERLAY
© 2009 Microchip Technology Inc.
DS51578B-page 11
TC115 Evaluation Board User’s Guide
A.4
BOARD – TOP LAYER
DS51578B-page 12
© 2009 Microchip Technology Inc.
Schematic and Layouts
A.5
BOARD – BOTTOM LAYER
© 2009 Microchip Technology Inc.
DS51578B-page 13
TC115 Evaluation Board User’s Guide
NOTES:
DS51578B-page 14
© 2009 Microchip Technology Inc.
TC115 EVALUATION BOARD
USER’S GUIDE
Appendix B. Bill of Materials (BOM)
TABLE B-1:
Qty.
1
BILL OF MATERIALS (BOM)
Reference
C1
Description
10 µF, X5R Ceramic, 6.3V 0805
Mfgr.
Panasonic®
Part Number
ECJ-CV50J106M
-
C2
Do Not Populate
—
—
1
C3
47 µF, Electrolytic Capacitator, 6.3V
Nichicon
UWT0J470MCL1GB
-
C4
Do Not Populate
—
—
1
D1
1A, 20V Shottky Diode
Diodes Inc.
DFLS120L
1
L1
100 µH, Inductor, SD25
Coiltronics®
SD25-101-R
1
PCB
RoHS Compliant Bare PCB, TC115
PFM/PWM Boost Evaluation Board
—
104-00074
—
-
R1
Do Not Populate
1
R2
475K, 1/8W,1%, Chip Resistor, 0805 Rohm
4
TP1,TP2, TP3, TP4
Test Point
Keystone Electronics®
1
U1
TC115 Step-up dc-dc Converter
Microchip Technology Inc. TC115301EMTTR
© 2009 Microchip Technology Inc.
—
MCR10EZHF4753
5016
DS51578B-page 15
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01/02/08
DS51578B-page 16
© 2009 Microchip Technology Inc.