PS4200

PS4200 Datasheet


PS4200

Part Datasheet
PS4200 PS4200 PS4200 (pdf)
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PS4200

PS402 Battery Manager Module with LED SOC Display
• PS402 tested, fully populated modules for evaluation and production
• Designed to work with 6 to 10 series cell NiMH configurations
• Performs all major NiMH battery management functions including - Accurate capacity monitoring - Optional external thermistor configuration for accurate temperature monitoring - Supports three full charge detection methods - dT/dt, -dV, programmable overcharge
• SOC display with four LEDs and a switch
• Fully compliant with industry standard Smart

Battery Data Specification v1.1a
• 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 EPROM and EEPROM
• Extremely low power operation - Sleep Mode < 13 µA typical - Run Mode < 500 µA typical - Sample Mode < 250 µA typical
• Complete hardware and software development tools available
• Overall mechanical dimensions - W x L inches - W x L millimeters

Board Photo

NEED PHOTO
Ordering Information

PS4200

NiMH - 6 to 10 series cells
2003 Microchip Technology Inc.

DS21768A-page 1

PS4200

The PS4200 module is a complete smart battery controller subsystem based on the Microchip PS402 battery manager with patented Accuron technology. The module is designed to operate in a battery pack consisting of six 6 to ten 10 series connected Ni-based cells. The module consists of the Microchip PS402 battery manager IC with a four LED SOC display and an optional connection for an external thermistor.

Quick Start - Pack Assembly

Follow these directions to assemble a pack with the PS4200 module.
• 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 PS402 family of CMOS ASICs. The pack positive should be securely connected to the module first, followed by pack negative.

Step 1 Configure the module for optional external thermistor use. PS4200 modules are shipped configured to use the internal temperature sensor only.

To add an external thermistor to the board, remove resistor R16 and connect the thermistor across vias TN and TR.

Step 2 Connect wires to module. Use large diameter wire 18 AWG-20 AWG for current carrying lines from VR and V1. All others are signal only lines 24 to 22 AWG .

Step 3 Connect V1 to the most positive point on the battery cell stack.

Step 4 Connect VR to the most negative point on the battery cell stack.

Step 5 Connect external connector to BN, T, C, D and BP.

Step 6 Program the assembled pack using Microchip's PowerTool software and PowerCal board or PowerInfo board hardware.

The EEPROM parameters can be changed at will using the utilities on the P4 EE page in the PowerTool software. The OTP EPROM parameters can be changed a limited number of times using utilities on the P4 OTP page. To write to the OTP EPROM, an additional voltage VPP must be applied to the PS402. This programming voltage can be obtained from the PowerInfo board and applied to the PS4200 at connection VP small thru-hole located on the small edge of the board opposite the connector edge.

Step 7 Calibrate the pack using the PowerTool software and PowerCal board hardware. The pack is now ready for use.

FIGURE 1-1:

CONNECTION POINTS SIDE 1

VP TN TR

VR V1

DS21768A-page 2
2003 Microchip Technology Inc.

FIGURE 1-2:

BOARD ASSEMBLY SIDE 1

R29 R26 C1

PS4200

LED0 LED1 LED2 LED3 C17 C18 R35

C5 R32 C7

FIGURE 1-3:

BOARD ASSEMBLY SIDE 2

R36 U1

D3 C16

R9 D2 R7 D1 R5

FUNCTIONAL DESCRIPTION

PS402 Fuel Gauge

The module fuel gauge provides State-of-Charge SOC and battery status data in accordance with the SMBus standards version The PS402 monitors the pack voltage, battery temperature and current to determine SOC and battery status. The State-ofCharge calculations are compensated for cell self discharge and charge acceptance. 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 data sheet "PS402 Single Chip Battery Manager - Nickel Chemistries" for details on configuring the PS402.
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 PS4200. Please refer to the Microchip web site for ordering information and design documentation including schematics at

Reference Documents

This data sheet provides an overview of the PS4200 Battery Manager Module. For further information on the PS402 and development tool operations, please refer to the documents listed in Table 4-2 available for download at

TABLE 4-1 MICROCHIP DEVELOPMENT TOOL SUMMARY

Development Tool

PowerInfo hardware with PowerTool software PS041

PowerCal hardware with PowerTool software PS042

Read and write Smart Battery data values, EEPROM programming, OTP EPROM programming

Read and write Smart Battery data values, EEPROM programming, OTP EPROM programming, pack calibration, pack test

TABLE 4-2 MICROCHIP REFERENCE DOCUMENTS

Document Number

Documents Available

DS21766A DS40234A DS40237A

PS402 Single Chip Battery Manager - Nickel Chemistries Data Sheet IC Products PS041 PowerInfo Configuration Interface Product Brief PS042 PowerCal Calibration Platform Data Sheet Development Tool Documentation

DS21768A-page 6
2003 Microchip Technology Inc.

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 and PowerSmart are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

Accuron, PowerTool, SmartSensor, SmartShunt, SmartTel, PowerCal and PowerInfo 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.
2003, Microchip Technology Incorporated. Printed in the U.S.A., All Rights Reserved.

Printed on recycled paper.
2003 Microchip Technology Inc.

DS21768A-page 7

WORLDWIDE SALES AND SERVICE

AMERICAS

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ASIA/PACIFIC

Australia Microchip Technology Australia Pty Ltd Marketing Support Division Suite 22, 41 Rawson Street Epping 2121, NSW Australia Tel 61-2-9868-6733 Fax 61-2-9868-6755

China - Beijing Microchip Technology Consulting Shanghai Co., Ltd., Beijing Liaison Office Unit 915 Bei Hai Wan Tai Bldg. No. 6 Chaoyangmen Beidajie Beijing, 100027, No. China Tel 86-10-85282100 Fax 86-10-85282104

China - Chengdu
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Datasheet ID: PS4200 648193