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1 SLUUA90A – April 2013 – Revised July 2016
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Copyright © 2013–2016, Texas Instruments Incorporated
bq27531EVM With bq27531 Battery Management Unit Impedance Track™
Fuel Gauge and bq24192 4.5-A, Switch-Mode Battery Charger for Single-Cell
Applications
Impedance Track is a trademark of Texas Instruments.
Microsoft, Windows are registered trademarks of Microsoft Corporation.
All other trademarks are the property of their respective owners.
User's Guide
SLUUA90A – April 2013 – Revised July 2016
bq27531EVM With bq27531 Battery Management Unit
Impedance Track™ Fuel Gauge and bq24192 4.5-A,
Switch-Mode Battery Charger for Single-Cell Applications
This evaluation module (EVM) is a complete evaluation system for the Battery Management Unit (BMU)
chipset consisting of the bq27531-G1 fuel gauge and bq24192 battery charger. The EVM includes one
bq27531 circuit, including a current sense resistor and one thermistor. In addition, the fuel gauge controls
the bq24192 battery charger's settings and monitors its status via I
2
C communication lines. Together, the
chipset provides all necessary components to monitor and predict capacity for a system-side fuel gauge
solution as well as to charge the battery from either an adapter or USB input with up to 4.5-A of charge
current. The circuit module connects directly across the battery pack. With the EV2300 interface board
and software, the user can read the bq27531-G1 data registers, program the chipset for different pack
configurations, log cycling data for further evaluation, and evaluate the overall functionality of the battery
management unit solution under different charge and discharge conditions. The latest Microsoft
®
Windows
®
based PC software can be downloaded from the product folder on the Texas Instruments Web
site.
Contents
1 Features
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2 bq27531-Based Circuit Module
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3 Circuit Module Physical Layouts, Bill of Materials, and Schematic
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4 EVM Hardware and Software Setup
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5 Troubleshooting Unexpected Dialog Boxes
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6 Operation
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7 Calibration
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8 Advanced Communication I
2
C
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9 Related Documentation From Texas Instruments
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List of Figures
1 Schematic
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2 bq27531EVM-001 Layout – Silk Screen
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3 Layer 1
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4 Layer 2
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5 Layer 3
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6 Layer 4
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7 BAT_Load (PR1010) Schematic
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8 Test Setup for bq27531EVM (PWR216)
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9 Registers Screen
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10 bqStudio Default Page
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11 Data Memory Screen
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12 Calibration Screen
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13 Advanced Communication I
2
C
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14 Golden Image Output Screen
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15 Perform Programming Screen
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