Texas Instruments bq27220, User Manual

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1 SLUUBF5 – April 2016
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Copyright © 2016, Texas Instruments Incorporated
bq27220EVM-744 Evaluation Module
Microsoft, Windows are registered trademarks of Microsoft Corporation.
User's Guide
SLUUBF5 – April 2016
bq27220EVM-744 Evaluation Module
This evaluation module (EVM) is a complete evaluation system for the bq27220. This EVM includes one
bq27220 circuit module, an external current sense resistor. A separate orderable EV2300 or EV2400 PC
interface board for gas gauge along with a PC USB cable, and Microsoft
®
Windows
®
based PC software is
needed when using this EVM. The circuit module includes one bq27220 integrated circuit and all other
onboard components necessary to monitor and predict capacity for a system-side or removable battery
pack fuel-gauge solution. With the EV2300 or EV2400, users can:
• Read the bq27220 data registers
• Program the chipset for different configurations
• Log cycling data for further evaluation
• Evaluate the overall functionality under different charge and discharge conditions
Contents
1 Features
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2
1.1 Kit Contents
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2
1.2 Ordering Information
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2
1.3 bq27220 Circuits Module Performance Specification Summary
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2
2 bq27220EVM Quick Start Guide
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3
2.1 Items Needed for EVM Setup and Evaluation
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3
2.2 System Requirements
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3
2.3 Software Installation
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3
2.4 Troubleshooting Unexpected Dialog Boxes
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3
2.5 EVM Connections
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3
2.6 PC Interface Connection
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3 Operation
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3.1 Starting the Program
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3.2 Setting Programmable bq27220 Options
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3.3 Calibration
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3.4 Setting the CEDV Parameters
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9
4 Circuit Module Physical Layout, Bill of Materials and Schematic
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10
4.1 Board Layout
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10
4.2 Bill of Materials
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4.3 Schematic
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5 Related Documentation from Texas Instruments
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List of Figures
1 bq27220 Circuit Module Connection to Pack and System Load/Charger
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4
2 Registers Screen
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6
3 Data Memory Screen
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7
4 Calibration Screen
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5 CEDV Coefficients Calculation Flow
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6 Top Silk Screen
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7 Top Layer
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8 Bottom Layer
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9 bq27220EVM Schematic
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