Texas Instruments BQ27425EVM-G2B System-Side Impedance Track™ Fuel (Gas) Gauge Evaluation Module BQ27425EVM-G2B BQ27425EVM-G2B Scheda Tecnica
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BQ27425EVM-G2B
User's Guide
SLUU656A – October 2011 – Revised January 2013
bq27425 EVM: Single-Cell Impedance Track Technology
This evaluation module (EVM) is a complete evaluation system for the bq27425. The EVM includes one
bq27425 circuit module with an integrated current-sense resistor. A separated orderable EV2300 or
EV2400 PC interface board for gas gauge interface along with a PC USB cable, and Windows™-based
PC software is needed when using this EVM. The circuit module includes one bq27425 integrated circuit
and all other onboard components necessary to monitor and predict capacity for a system-side fuel gauge
solution. The circuit module connects directly across the battery pack. With the EV2300 or EV2400
interface board and software, the user can:
bq27425 circuit module with an integrated current-sense resistor. A separated orderable EV2300 or
EV2400 PC interface board for gas gauge interface along with a PC USB cable, and Windows™-based
PC software is needed when using this EVM. The circuit module includes one bq27425 integrated circuit
and all other onboard components necessary to monitor and predict capacity for a system-side fuel gauge
solution. The circuit module connects directly across the battery pack. With the EV2300 or EV2400
interface board and software, the user can:
•
Read the bq27425 data registers
•
Program the chipset for different configurations
•
Log cycling data for further evaluation
•
Evaluate the overall functionality of the bq27425 solution under different charge and discharge
conditions
conditions
The latest Windows™ – based PC software can be downloaded from the product folder on the Texas
Instruments Web site.
Instruments Web site.
Contents
1
Features
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1.1
Kit Contents
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1.2
Ordering Information
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2
bq27425-Based Circuit Module
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2.1
Circuit Module Connections
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2.2
Pin Description
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3
bq27425 Circuit Module Schematic
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3.1
Schematic
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4
Circuits Module Physical Layout and Bill of Material
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4.1
Board Layout
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4.2
Bill of Material
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4.3
Schematic
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4.4
bq27425 Circuits Module Performance Specification Summary
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5
EVM Hardware and Software Setup
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5.1
System Requirements
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5.2
Software Installation
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6
Troubleshooting Unexpected Dialog Boxes
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7
Hardware Connection
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7.1
Connecting the bq27425 Circuit Module to a Battery Pack
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7.2
PC Interface Connection
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8
Operation
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8.1
Starting the Program
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8.2
Setting Programmable bq27425 Options
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9
Calibrate Screen
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9.1
To Calibrate the bq27425
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9.2
Coulomb Counter Offset Calibration
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9.3
Board Offset Calibration
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9.4
Voltage Calibration
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9.5
Temperature Calibration
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1
SLUU656A – October 2011 – Revised January 2013
bq27425 EVM: Single-Cell Impedance Track Technology
Copyright © 2011–2013, Texas Instruments Incorporated