Texas Instruments BQ27421EVM-G1B System-Side Battery Fuel (Gas) Gauge Evaluation Module BQ27421EVM-G1B BQ27421EVM-G1B 数据表
产品代码
BQ27421EVM-G1B
User's Guide
SLUUA63 – April 2013
bq27421 EVM: Single-Cell Impedance Track Technology
This evaluation module (EVM) is a complete evaluation system for the bq27421. The EVM includes one
bq27421 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
bq27421 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 bq27421 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:
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 bq27421 data registers
•
Update the RAM for different configurations
•
Log cycling data for further evaluation
•
Evaluate the overall functionality of the bq27421 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
bq27421-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
Circuit Module Physical Layout, Bill of Materials and Schematic
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3.1
Board Layout
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3.2
Bill of Material
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3.3
Schematic
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3.4
bq27421 Circuits Module Performance Specification Summary
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4
EVM Hardware and Software Setup
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4.1
System Requirements
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4.2
Software Installation
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5
Troubleshooting Unexpected Dialog Boxes
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6
Hardware Connection
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6.1
Connecting the bq27421 Circuit Module to a Battery Pack
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6.2
PC Interface Connection
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7
Operation
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7.1
Starting the Program
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7.2
Setting Programmable bq27421 Options
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8
Calibrate Screen
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8.1
To Calibrate the bq27421
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8.2
Voltage Calibration
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8.3
Board Offset Calibration
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9
Related Documentation from Texas Instruments
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List of Figures
Windows, Microsoft are registered trademarks of Microsoft Corporation.
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C is a trademark of NXP.
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SLUUA63 – April 2013
bq27421 EVM: Single-Cell Impedance Track Technology
Copyright © 2013, Texas Instruments Incorporated