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User's Guide
SLUU253 – March 2006
bq27350EVM Single Cell Impedance Track™ Technology
Evaluation Module
This evaluation module (EVM) is a complete evaluation system for the bq27350. The
EVM includes one bq27350 circuit module, a current sense resistor, one thermistor, an
EV2300 PC interface board for gas gauge interface, a PC USB cable, and
Windows™-based PC software. The circuit module includes one bq27350 integrated
circuit (IC), one TPS77025 IC, and all other onboard components necessary to monitor
and predict capacity. The circuit module connects directly across the cell in a battery.
With the EV2300 interface board and software, the user can read the bq27350 data
registers, program the chipset for different pack configurations, log cycling data for
further evaluation, and evaluate the overall functionality of the bq27350 solution under
different charge and discharge conditions.
Contents
1 Features ............................................................................................. 2
2 bq27350-Based Circuit Module ................................................................... 2
3 bq27350 Circuit Module Schematic .............................................................. 3
4 Circuit Module Physical Layouts and Bill of Materials ......................................... 3
5 EVM Hardware and Software Setup ............................................................. 7
6 Troubleshooting Unexpected Dialog Boxes ..................................................... 7
7 Hardware Connection .............................................................................. 8
8 Operation ............................................................................................ 9
9 Calibrate Screen .................................................................................. 12
10 I2C Pro Screen .................................................................................... 14
11 SMB Pro (Advanced) Screen .................................................................... 15
Trademarks ........................................................................................ 16
List of Figures
1 bq27350EVM-001 Layout (Silk Screen) ......................................................... 3
2 Top Assembly ....................................................................................... 4
3 Top Layer ............................................................................................ 4
4 Bottom Layer ........................................................................................ 5
5 Schematic ........................................................................................... 6
6 bq27350 Circuit Module Connection to Cell and System Load/Charger .................... 8
7 DataRAM Screen ................................................................................... 9
8 Data Flash Screen ................................................................................ 10
9 Calibration Screen ................................................................................ 13
10 I2C Pro Screen .................................................................................... 14
11 Pro (Advanced) Screen .......................................................................... 15
List of Tables
1 Ordering Information ............................................................................... 2
2 Bill of Materials ...................................................................................... 5
3 Performance Specification Summary ............................................................ 7
4 Circuit Module to EV2300 Connections.......................................................... 8
SLUU253 – March 2006 bq27350EVM Single Cell Impedance Track™ Technology 1
Evaluation Module
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