MCP73213
OVP Dual-Cell
Li-Ion Battery Charger
Evaluation Board
User’s Guide
© 2009 Microchip Technology Inc.
DS51849A
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DS51849A-page ii
© 2009 Microchip Technology Inc.
MCP73213 OVP DUAL-CELL LI-ION
BATTERY CHARGER EVALUATION
BOARD USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 1
Introduction............................................................................................................ 1
Document Layout .................................................................................................. 1
Conventions Used in this Guide ............................................................................ 2
Recommended Reading........................................................................................ 2
The Microchip Web Site ........................................................................................ 3
Customer Support ................................................................................................. 3
Document Revision History ................................................................................... 3
Chapter 1. Product Overview
1.1 Introduction ..................................................................................................... 5
1.2 What is the MCP73213 OVP Dual-Cell Li-Ion Battery Charger
Evaluation Board? .................................................................................... 6
1.3 What the MCP73213 OVP Dual-Cell Li-Ion Battery Charger
Evaluation Board Kit Includes: .................................................................. 6
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 .................................................................................................. 11
A.2 Board – Schematic ....................................................................................... 12
A.3 Board – Assembly Drawing .......................................................................... 13
A.4 Board – Top Layer ....................................................................................... 14
A.5 Board – Top Metal Layer ............................................................................. 15
A.6 Board – Bottom Layer ................................................................................. 16
Appendix B. Bill Of Materials (BOM)
Worldwide Sales and Service .................................................................................... 18
© 2009 Microchip Technology Inc.
DS51849A-page iii
MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board User’s Guide
NOTES:
DS51849A-page iv
© 2009 Microchip Technology Inc.
MCP73213 OVP DUAL-CELL LI-ION
BATTERY CHARGER 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
MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board User’s Guide.
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 MCP73213 OVP Dual-Cell Li-Ion Battery
Charger Evaluation Board. The manual layout is as follows:
• Chapter 1. “Product Overview” – Important information about the MCP73213
OVP Dual-Cell Li-Ion Battery Charger Evaluation Board.
• Chapter 2. “Installation and Operation” – Includes instructions on how to get
started with this user’s guide and a description of the user’s guide.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation
Board.
• Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the
MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board.
© 2009 Microchip Technology Inc.
DS51849A-page 1
MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
‘bnnnn
Text in angle brackets < >
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0xnnnn
Square brackets [ ]
Curly brackets and pipe
character: { | }
Ellipses...
Represents
Examples
Referenced books
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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 binary number where n is a
digit
A key on the keyboard
Click OK
Click the Power tab
‘b00100, ‘b10
File>Save
Press <Enter>, <F1>
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
A variable argument
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
file.o, where file can be
any valid filename
A hexadecimal number where 0xFFFF, 0x007A
n is a hexadecimal digit
Optional arguments
mcc18 [options] file
[options]
Choice of mutually exclusive errorlevel {0|1}
arguments; an OR selection
Replaces repeated text
var_name [,
var_name...]
Represents code supplied by void main (void)
user
{ ...
}
RECOMMENDED READING
This user's guide describes how to use MCP73213 OVP Dual-Cell Li-Ion Battery
Charger Evaluation Board. The following Microchip document is recommended as
supplemental reference resources.
MCP73213 Data Sheet, “Dual-Cell Li-Ion / Li-Polymer Battery Charge
Management Controller with Input Overvoltage Protection”, DS22190
This data sheet provides detailed information regarding the MCP73213 product family.
DS51849A-page 2
© 2009 Microchip Technology Inc.
Preface
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,
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• General Technical Support – Frequently Asked Questions (FAQs), technical
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CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
•
•
•
•
•
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Development Systems Information Line
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 A (July 2009)
• Initial Release of this Document.
© 2009 Microchip Technology Inc.
DS51849A-page 3
MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board User’s Guide
NOTES:
DS51849A-page 4
© 2009 Microchip Technology Inc.
MCP73213 OVP DUAL-CELL LI-ION
BATTERY CHARGER EVALUATION
BOARD USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
The MCP73213 product family is highly integrated linear charge management
controllers for dual-cell Li-Ion and Li-Polymer batteries. The MCP73213 product family
operates with minimum external components, which is ideal for use in space-limited
and cost-effective applications. The maximum 18V rated input over voltage protection
and battery short circuit protection offer designers a secondary protection in addition to
the Li-Ion battery protection circuit.
This chapter provides an overview of the MCP73213 OVP Dual-Cell Li-Ion Battery
Charger Evaluation Board and covers the following topics:
• “What is the MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board?”
• “What the MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board Kit
Includes”
1
VDD
VBAT
2 VDD
VBAT
3
+
4
CIN
COUT
7
REGULATED
WALL CUBE
STAT
PROG
RLED
5 NC
VSS
6 NC
VSS
2-Cell
Li-Ion/Li-Poly
Battery
10
9
8
RPROG
-
MCP73213
FIGURE 1-1:
MCP73213 Typical Application.
© 2009 Microchip Technology Inc.
DS51849A-page 5
MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board User’s Guide
1.2
WHAT IS THE MCP73213 OVP DUAL-CELL LI-ION BATTERY CHARGER
EVALUATION BOARD?
The MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board demonstrates
the features of Microchip’s MCP73213 “Dual-Cell Li-Ion / Li-Polymer Battery Charge
Management Controller with Input Overvoltage Protection”.
The MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board is designed
with two charging currents. The default value is 500 mA and when PROG via is tied to
ground, the two parallel resistors output 1000 mA charging current to a Li-Ion battery.
One blue LED status output allows the user to learn if the MCP73213 is in charging
state or not.
Note:
Refer to Table 2-2 for Charge Status Outputs and Table 2-1 for Fast Charge
Current vs. Resistor Lookup Table.
The MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board comes with an
installed MCP73213 device in the 3 mm x 3 mm DFN package. The factory preset
battery regulation voltage is 8.40V with 10% precondition current, 10% termination
current set point, automatic recharge and 6.5V OVP threshold voltage.
The MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board is designed to
observe the performance and features on the circuits via multiple test points. Circuits
can also be implemented into suitable applications without additional work.
1.3
WHAT THE MCP73213 OVP DUAL-CELL LI-ION BATTERY CHARGER
EVALUATION BOARD KIT INCLUDES:
This MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board kit includes:
• MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board, 102-00261
• Important Information Sheet
DS51849A-page 6
© 2009 Microchip Technology Inc.
MCP73213 OVP DUAL-CELL LI-ION
BATTERY CHARGER EVALUATION
BOARD USER’S GUIDE
Chapter 2. Installation and Operation
2.1
INTRODUCTION
The MCP73213 is a highly integrated Li-Ion battery charge management controller for
use in space-limited and cost-sensitive applications. The MCP73213 provides specific
charge algorithms for Li-Ion / Li-Polymer batteries to achieve optimal capacity and
safety in the shortest charging time possible. Along with its small physical size, the low
number of external components makes the MCP73213 ideally suitable for portable
applications.
The absolute maximum voltage, up to 18V, allows the use of MCP73213 in harsh
environments, such as low cost ac-dc adapter.
The MCP73213 employs a constant current / constant voltage charge algorithm. The
various charging voltage regulations provide design engineers flexibility to use in
different applications. The fast charge, constant current value is set with one external
resistor from 130 mA to 1100 mA. The MCP73213 limits the charge current based on
die temperature during high power or high ambient conditions. This thermal regulation
optimizes the charge cycle time while maintaining device reliability.
The PROG pin of the MCP73213 also serves as enable pin. When high impedance is
applied, the MCP73213 will be in standby mode.
Typical applications for the reference design are Digital Camcorders, Portable Media
Players, Handheld Medical devices, Portable Communicators, Ultra Mobile Computers
and Netbook computers.
2.2
FEATURES
The MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board has the
following features:
•
•
•
•
•
•
•
•
•
•
13V Input Overvoltage Protection
10% Preconditioning of deeply depleted cells.
32-Minute Preconditioning Timer
6-Hour Safety Timer
10% Automatic Charge Termination
500 mA and 1000 mA Preset Fast Charge Current
Automatic Recharge
Thermal Regulation
One Blue LED indicates charge status
Small DFN packages with Exposed Pad as additional heat sink
© 2009 Microchip Technology Inc.
DS51849A-page 7
MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board User’s Guide
2.3
GETTING STARTED
The MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board is fully
assembled and tested for charging a single-cell Li-Ion or Li-Polymer battery.
2.3.1
Power Input and Output Connection
2.3.1.1
POWERING THE MCP73213 OVP DUAL-CELL LI-ION BATTERY
CHARGER EVALUATION BOARD
1. Connect the positive battery terminal to VBAT+ and negative battery terminal to
VBAT-.
2. Connect the 9V DC power supply Negative Terminal to VSS.
3. Connect the 9V DC power supply Positive Terminal to VDD.
4. It should initiate the battery charging cycle when the power source is present and
VBAT is below recharge threshold. For example, When VREG is 8.4V, VBAT needs
to be lower than 7.98V to initiate the charge cycle.
Note:
The Li-Ion battery pack can be replaced with test circuit or electronic load
that can sink current with DC power supply. Refer to Figure 2-3.
5. The charging status table is available on Table 2-2.
6. The fast charge current is preset at 500 mA and can be increased to 1A by
connecting PROG via to ground.
Note:
Fast Charge Current can be programmed with various resistors based on
Figure 2-2 and Table 2-1.
+
9V DC SUPPLY
-
1
2-CELL
LI-ION
BATTERY
+
FIGURE 2-1:
DS51849A-page 8
Board Top Assembly.
© 2009 Microchip Technology Inc.
Charge Current (mA)
Installation and Operation
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
VDD = 5.2V
TA = +25°C
1
1 2 3 4 5 6 7 8 9 1011121314151617181920
Programming Resistor (Ω)
FIGURE 2-2:
(RPROG).
TABLE 2-1:
MCP73213 Charge Current (IOUT) vs. Programming Resistor
MCP73213 RESISTOR LOOKUP TABLE
Charge Current (mA)
Recommended E96 Resistor
(Ω)
Recommended E24 Resistor
(Ω)
130
10k
10k
150
8.45k
8.20k
200
6.20k
6.20k
250
4.99k
5.10k
300
4.02k
3.90k
350
3.40k
3.30k
400
3.00k
3.00k
450
2.61k
2.70k
500
2.32k
2.37k
550
2.10k
2.20k
600
1.91k
2.00k
650
1.78k
1.80k
700
1.62k
1.60k
750
1.50k
1.50k
800
1.40k
1.50k
850
1.33k
1.30k
900
1.24k
1.20k
© 2009 Microchip Technology Inc.
950
1.18k
1.20k
1000
1.10k
1.10k
1100
1.00k
1.00k
DS51849A-page 9
MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board User’s Guide
Amp
Meter
9V - 12V
Power
Source
Volt
Meter
R
5Ω
10W
1000 µF
Microchip
Battery
Charge
Management
Controller
VBAT+
VBAT-
GND
1
FIGURE 2-3:
Simulated Battery Load.
TABLE 2-2:
MCP73213 CHARGE STATUS OUTPUTS
CHARGE CYCLE STATE
DS51849A-page 10
STAT
Shutdown
Hi-Z
Standby
Hi-Z
Preconditioning
L
Constant Current Fast Charge
L
Constant Voltage
L
Charge Complete - Standby
Hi-Z
Temperature Fault
1.6 second 50% D.C. Flashing (Type 1)
Hi-Z (Type 2)
Timer Fault
1.6 second 50% D.C. Flashing (Type 1)
Hi-Z (Type 2)
Preconditioning Timer Fault
1.6 second 50% D.C. Flashing (Type 1)
Hi-Z (Type 2)
© 2009 Microchip Technology Inc.
MCP73213 OVP DUAL-CELL LI-ION
BATTERY CHARGER EVALUATION
BOARD USER’S GUIDE
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the following schematics and layouts for the MCP73213 OVP
Dual-Cell Li-Ion Battery Charger Evaluation Board:
•
•
•
•
Board – Schematic
Board – Top Layer
Board – Top Metal Layer
Board – Bottom Layer
© 2009 Microchip Technology Inc.
DS51849A-page 11
MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board User’s Guide
BOARD – SCHEMATIC
M
A.2
DS51849A-page 12
© 2009 Microchip Technology Inc.
Schematic and Layouts
A.3
BOARD – TOP LAYER
102-00261
MCP73213EV-2SOVP
© 2009 Microchip Technology Inc.
DS51849A-page 13
MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board User’s Guide
A.4
BOARD – TOP METAL LAYER
DS51849A-page 14
© 2009 Microchip Technology Inc.
Schematic and Layouts
A.5
BOARD – BOTTOM LAYER
© 2009 Microchip Technology Inc.
DS51849A-page 15
MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board User’s Guide
NOTES:
DS51849A-page 16
© 2009 Microchip Technology Inc.
MCP73213 OVP DUAL-CELL LI-ION
BATTERY CHARGER EVALUATION
BOARD USER’S GUIDE
Appendix B. Bill Of Materials (BOM)
TABLE B-1:
Qty
BILL OF MATERIALS
Reference
Description
Manufacturer
3M
Part Number
4
Bump
BUMPON HEMISPHERE .44X.20
WHITE
SJ5003-9-ND
2
C1, C2
CAP CERAMIC 4.7 µF 25V X5R 1206
TDK
C2012X5R1E475M
1
D1
Blue Water Clear 0603 SMD LED
Para Light USA
L-C191LBCT-U1
1
PCB
RoHS Compliant Bare PCB, MCP73213
Evaluation Board
Microchip Technology Inc.
104-00261
2
R1, R3
RES 2.37K OHM 1/10W 1% 0603 SMD
Panasonic® - ECG
ERJ-3EKF2371V
1
R2
RES 1K OHM 1/10W 1% 0603 SMD
Panasonic - ECG
ERJ-3EKF1001V
Electronics®
4
TP1, TP2,
TP3, TP4
PC Test Point Compact SMT
Keystone
1
U1
Dual-Cell Li-Ion/Li-Poly Battery Charger
with OVP
Microchip Technology Inc.
Note 1:
5016
MCP73213-A6S/MF
The components listed in this Bill of Materials are representative of the PCB assembly. The
released BOM used in manufacturing uses all RoHS-compliant components.
© 2009 Microchip Technology Inc.
DS51849A-page 17
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China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-536-4803
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
03/26/09
DS51849A-page 18
© 2009 Microchip Technology Inc.