PS7051/7052 PS700 Battery Monitor and Safety Module

PS7051/PS7052
PS700 Battery Monitor and Safety Module
Features
• PS700 tested, fully populated modules for
evaluation
• Designed to work with 1 and 2 series cell Lithium
configurations
• Performs all major battery management functions
including accurate capacity monitoring
• SMBus v1.1 with PEC/CRC-8 communication
with system host
• High accuracy measurement of charge/discharge
current, voltage and temperature with on-chip
15-bit integrating A/D
• Precise capacity reporting using Microchip
patented algorithms and 3D battery cell models
• 3D models and “learned” parameters stored in
integrated EEPROM
• Extremely low-power operation:
- Sleep mode: < 20 µA typical
- Run mode: < 100 µA typical
- Sample mode: < 50 µA typical
• Complete hardware and software development
tools available
• Overall mechanical dimensions:
- 0.248 W x 1.200 L (inches)
- 6.30 W x 30.50 L (millimeters)
 2004 Microchip Technology Inc.
Board Photo
Ordering Information
Part Number
Description
PS7051
Li Ion - 1 series cell
PS7052
Li Ion - 2 series cells
DS21771B-page 1
PS7051/PS7052
1.0
GENERAL DESCRIPTION
Step 1: Connect wires to module. Use large diameter
wire (18 AWG-20 AWG) or tabs for current carrying
lines from VR, V2 (PS7052 only) and V1. All others are
signal only lines (24 to 22 AWG).
The PS7051 and PS7052 modules are complete Smart
Battery controller subsystems based on the Microchip
PS700 battery monitor. The modules are designed to
operate in a battery pack consisting of one (1) or two
(2) series connected Lithium cells. The module consists of the Microchip PS700 fuel gauge IC and a Seiko
battery protection IC.
1.1
Step 2: Connect V1 to the most positive point on the
battery cell stack.
Step 3: Connect VR to the most negative point on the
battery cell stack.
Step 4: For PS7052 only, connect V2 to the middle of
the cell stack.
Quick Start – Pack Assembly
Step 5: Connect external connector to B-, C, D and B+.
Follow these directions to assemble a pack with the
PS705X module.
Step 6: Program the assembled pack using Microchip’s
PowerMate™ software and PowerCal™ 2 board or
PowerInfo™ 2 board hardware. The EEPROM parameters can be changed at will using the utilities on the EE
page in the PowerMate software.
• Use standard precautions when handling static
sensitive devices.
• Modules should be connected to battery cells in
the order indicated below to insure proper start-up
and operation. Wires should be attached to the
modules first and then connected to the battery
cells as instructed.
• The connection sequence is critical to successful
use of the PS700 family of CMOS ASICs. The
pack positive should be securely connected to the
module first, followed by pack negative.
Step 7: Calibrate the pack using the PowerMate
software and PowerCal 2 board hardware. The pack is
now ready for use.
FIGURE 1-2:
PS7051 BOARD ASSEMBLY (SIDE 2)
V1
DS21771B-page 2
NTC2
PS7051 BOARD ASSEMBLY (SIDE 1)
NTC1
FIGURE 1-1:
B+
C
D
B-
V2
 2004 Microchip Technology Inc.
PS7051/PS7052
FIGURE 1-4:
PS7052 BOARD ASSEMBLY (SIDE 2)
V1
 2004 Microchip Technology Inc.
NTC2
PS7052 BOARD ASSEMBLY (SIDE 1)
NTC1
FIGURE 1-3:
V22
B+
C
D
B-
V2
DS21771B-page 3
PS7051/PS7052
2.0
FUNCTIONAL DESCRIPTION
2.1
PS700 Fuel Gauge
The module fuel gauge provides State-Of-Charge
(SOC) and battery status data in accordance with the
SMBus standards version 1.1. The PS700 monitors the
cell voltages, battery temperature and current to
determine SOC and battery status. The State-OfCharge calculations are compensated for cell selfdischarge. The remaining time calculation is compensated for temperature and discharge rate. The parameters for determining battery status flags and alarm
thresholds are all programmable, as is the battery
design capacity and the battery performance model
data. Please refer to the PS700 Data Sheet (DS21760)
for details on configuring the PS700.
2.2
Primary Safety
The primary safety circuit provides cell protection from
conditions of overcharge, overdischarge and overcurrent. Analog ICs from Seiko measure individual cell
voltages and voltage across the discharge FET. These
values are compared against internal reference values
and the gates of two N-channel power MOSFETs are
controlled based on the comparison results.
3.0
BOARD DESCRIPTION
PCB schematics and bill of materials are included
here for completeness. To download full size schematic
and BOM, please visit the Microchip web site
(www.microchip.com).
3.1
Mechanical Dimensions
Overall Dimensions: 248 mils W x 1200 mils L
DS21771B-page 4
 2004 Microchip Technology Inc.
A
B
C
1
2
CELL NEGATIVE (-)
THERMISTOR CONNECTIONS
CELL POSITIVE (+)
VR
V1
NTC2
NTC1
6.49K
R7
470
R11
221K
3
GROUND PLANE
CONNECTION
3
6
1
2
7
R3 5
C1
100 nF
C3
1.0 nF
PS700
GND
ROSC
NTC
0.020
R8
SR
VCELL2 SMB-DTA
VCELL1 SMB-CLK
U1
C11
100 nF
8
4
3
4
3
2
4
2
3
VSS
VDD
U2
4
4
VM
6
7
1
D1
CMSZDA5V6
9/15/2003
DATE
*** CONFIDENTIAL ***
THIS DOCUMENT CONTAINS
PROPRIETARY INFORMATION
THAT IS THE INTELLECTUAL
PROPERTY OF MICROCHIP
TECHNOLOGY, INC.
CHECKED
R. CASEBOLT
DRAWN
APPROVALS
CONTRACT NO.
SI6880EDQ
Q1
S8241A
CO
5
5
DO
1
8
2
2
 2004 Microchip Technology Inc.
3
NONE
SCALE
B
SIZE
5
03-826142
6
5-Nov-2003
15:27:57
3.1
REV
http://www.microchip.com
469-241-0087 Voice/469-241-0106 Fax
03-826142 REV 3-1.SCH Sheet 1 of 1
FILE
DRAWING NO.
PowerSmart Products Group
2745 Dallas Parkway, Suite 400
Plano, TX 75093
Microchip Technology, Inc.
B+
C
PACK CONNECTION
D
B-
CODE IDENT NO.
PS7051
TITLE
R4
R5
6
FOR REVISION HISTORY, SEE 826142 CHANGE LOG
12
R15
1.0K
680
680
5
A
B
C
D
FIGURE 3-1:
1
D
1
PS7051/PS7052
PS7051 BOARD SCHEMATIC
DS21771B-page 5
PS7051/PS7052
TABLE 3-1:
Symbols
PS7051 BILL OF MATERIALS
Description
Manufacturer
Manufacturer PN
Qty.
Raw PCB, PS7051
Microchip
04-826142 Rev 3.1
1
C3
Capacitor, Ceramic, 1.0 nF, 25V, +/-10%,
X7R dielectric, 0402
Panasonic
ECJ-0EB1E102K
1
C1, C11
Capacitor, Ceramic, 100 nF, 16V, +80%/-20%, BC Components
Y5V dielectric, 0402
0402F104Z160BT
2
D1
Dual Zener Diode, 5.6V +/-10%, 200 mW,
common anode, SOT-323
Central Semi.
Diodes Inc.
CMSZDA5V6
AZ23C5V6W-7
1
Q1
MOSFET, Dual N-channel Enhancement
mode, -20V, -6A, 18 mOhm, 1.19W,
TSSOP (8/4.4 mm body width) package
Vishay Siliconix
SI6880EDQ
1
R7
Resistor, film, 0402, 1%, 6.49 KOhms
Panasonic
ERJ-2RKF6491X
1
R15
Resistor, film, 0402, 5%, 1.0 KOhms
Panasonic
ERJ-2GEJ102X
1
R11
Resistor, film, 0402, 5%, 470 ohms
Panasonic
ERJ-2GEJ471X
1
R3
Resistor, film, 0603, 1%, 221 KOhms
Panasonic
ERJ-3EKF2213V
1
R4, R5
Resistor, film, 0805, 5%, 680 ohms
Panasonic
ERJ-6GEYJ681V
2
R8
Resistor, metal strip, 1206, 1%, 0.020 ohms
Vishay
WSL1206-0.020-1%-R86
1
U1
IC, Low-Voltage Fuel Gauge, -20°C to +70°C, Microchip
TSSOP (8/4.4 mm body width) package
PS700-I/ST
1
U2
IC, Battery Protection Circuit, Li Ion, 1-cell,
-40°C to +85°C, SOT-23-5 package
S-8241ABPMC-GBP-T2
1
DS21771B-page 6
Seiko Instruments
 2004 Microchip Technology Inc.
A
B
C
1
2
CELL RETURN (-)
THERMISTOR CONNECTIONS
CELL CONNECTIONS
VR
V2
V1
NTC2
NTC1
6.49K
221K
3
GROUND PLANE
CONNECTION
R2
470
R7
R12
R11
470
470
3
6
1
2
7
R3 5
C1
100 nF
C3
1.0 nF
C2
100 nF
PS700
GND
ROSC
NTC
0.020
R8
SR
VCELL2 SMB-DTA
VCELL1 SMB-CLK
U1
C11
100 nF
C12
100 nF
8
4
3
4
6
4
5
4
2
3
VSS
VC
VDD
U2
1
4
VM
6
7
3
D1
CMSZDA5V6
DATE
8/5/2003
R. CASEBOLT
*** CONFIDENTIAL ***
THIS DOCUMENT CONTAINS
PROPRIETARY INFORMATION
THAT IS THE INTELLECTUAL
PROPERTY OF MICROCHIP
TECHNOLOGY, INC.
CHECKED
DRAWN
APPROVALS
CONTRACT NO.
TPCS8209
Q1
S8242A
CO
2
5
DO
1
8
2
2
 2004 Microchip Technology Inc.
3
NONE
SCALE
B
SIZE
5
6
3-Nov-2003
13:44:52
3.1
REV
http://www.microchip.com
469-241-0087 Voice/469-241-0106 Fax
03-826143 REV 3-1.SCH Sheet 1 of 1
FILE
03-826143
DRAWING NO.
PowerSmart Products Group
2745 Dallas Parkway, Suite 400
Plano, TX 75093
Microchip Technology, Inc.
B+
C
PACK CONNECTION
D
B-
CODE IDENT NO.
PS7052
TITLE
R4
R5
6
FOR REVISION HISTORY, SEE 826143 CHANGE LOG
12
R15
2.0K
680
680
5
A
B
C
D
FIGURE 3-2:
1
D
1
PS7051/PS7052
PS7052 BOARD SCHEMATIC
DS21771B-page 7
PS7051/PS7052
TABLE 3-2:
PS7052 BILL OF MATERIALS
Symbols
Description
Manufacturer
Manufacturer PN
Qty.
Raw PCB, PS7052
Microchip
04-826143 Rev 3.1
1
C3
Capacitor, Ceramic, 1.0 nF, 25V,
+/-10%, X7R dielectric, 0402
Panasonic
ECJ-0EB1E102K
1
C1-C2,
C11-C12
Capacitor, Ceramic, 100 nF, 16V, +80%/-20%,
Y5V dielectric, 0402
BC Components
0402F104Z160BT
4
D1
Dual Zener Diode, 5.6V +/-10%,
200 mW, common anode, SOT-323
Central Semi.
Diodes Inc.
CMSZDA5V6
AZ23C5V6W-7
1
Q1
MOSFET, Dual N-channel Enhancement mode, Toshiba
-20V, -5A, TSSOP (8/4.4 mm body width)
package
TPCS8209(TE12L)
1
R7
Resistor, film, 00402, 1%, 6.49 KOhms
Panasonic
ERJ-2RKF6491X
1
R2,
R11-R12
Resistor, film, 0402, 5%, 470 ohms
Panasonic
ERJ-2GEJ471X
3
R15
Resistor, film, 0402, 5%, 2.0 KOhms
Panasonic
ERJ-2GEJ202X
1
R3
Resistor, film, 0603, 1%, 221 KOhms
Panasonic
ERJ-3EKF2213V
1
R4, R5
Resistor, film, 0805, 5%, 680 ohms
Panasonic
ERJ-6GEYJ681V
2
R8
Resistor, metal strip, 1206, 1%, 0.020 ohms
Vishay
WSL1206-0.020-1%-R86
1
U1
IC, Low-Voltage Fuel Gauge, -20°C to +70°C,
TSSOP (8/4.4 mm body width) package
Microchip
PS700-I/ST
1
U2
IC, Battery Protection Circuit, Li Ion, 2-cell,
-40°C to +85°C, SOT-23-6 package.
Seiko Instruments S-8242AAG-M6T2G
DS21771B-page 8
1
 2004 Microchip Technology Inc.
PS7051/PS7052
FIGURE 3-3:
PS7051 DIMENSION DETAILS
 2004 Microchip Technology Inc.
DS21771B-page 9
PS7051/PS7052
FIGURE 3-4:
DS21771B-page 10
PS7052 DIMENSION DETAILS
 2004 Microchip Technology Inc.
PS7051/PS7052
4.0
DEVELOPMENT TOOL
SUMMARY
4.1
Microchip provides all the necessary hardware and
software to enable easy tailoring of battery control
algorithm parameters and cell performance models to
meet specific application requirements and attain the
highest accuracy available anywhere. Table 4-1
summarizes the development tool offering from
Microchip to support the PS705X. Please refer to
the Microchip web site for ordering information and
design documentation (including schematics) at
www.microchip.com.
TABLE 4-1:
Reference Documents
This data sheet provides an overview of the PS705X
Batter Monitor and Safety Module. For further information on the PS700 and development tool operations,
please refer to the documents listed in Table 4-2
available for download at www.microchip.com.
MICROCHIP DEVELOPMENT TOOL SUMMARY
Development Tool
Use
PowerInfo™ 2 hardware with PowerMate™
software (PS051)
Read and write PS700 registers and EEPROM
PowerCal™ 2 hardware with PowerMate
software (PS052)
Read and write PS700 registers and EEPROM, calibration
TABLE 4-2:
MICROCHIP REFERENCE DOCUMENTS
Document Number
DS21760
 2004 Microchip Technology Inc.
Documents Available
PS700 Battery Monitor
DS21771B-page 11
PS7051/PS7052
NOTES:
DS21771B-page 12
 2004 Microchip Technology Inc.
PS7051/PS7052
Information contained in this publication regarding device
applications and the like is intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip’s products as critical components in life support systems is not authorized except with
express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property
rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron
and PowerSmart are registered trademarks of Microchip
Technology Incorporated in the U.S.A. and other countries.
SmartShunt is a registered trademark
Technology Incorporated in the U.S.A.
of
Microchip
PowerCal, PowerInfo, PowerMate, PowerTool, SmartSensor
and SmartTel are trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2004, Microchip Technology Incorporated. Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
 2004 Microchip Technology Inc.
DS21771B-page 13
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DS21771B-page 14
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 2004 Microchip Technology Inc.