Texas Instruments bq27441 EVM, User Manual

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1 SLUUAP4A – December 2013 – Revised July 2016
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Copyright © 2013–2016, Texas Instruments Incorporated
bq27441 EVM: System-Side Impedance Track™ Technology
Microsoft, Windows are registered trademarks of Microsoft Corporation.
All other trademarks are the property of their respective owners.
User's Guide
SLUUAP4A – December 2013 – Revised July 2016
bq27441 EVM: System-Side Impedance Track™
Technology
This evaluation module (EVM) is a complete evaluation system for the bq27441. The EVM includes one
bq27441 circuit module with current-sense resistor. A separate orderable EV2300 or EV2400 PC interface
board for gas gauge interface along with a PC USB cable, and Microsoft
®
Windows
®
based PC software is
needed when using this EVM. The circuit module includes one bq27441 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 bq27441 data registers
• Update the RAM for different configurations
• Log cycling data for further evaluation
• Evaluate the overall functionality of the bq27441 solution under different charge and discharge
conditions
The latest 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
1.1 Kit Contents
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2
1.2 Ordering Information
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2
2 bq27441-Based Circuit Module
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3
2.1 Circuit Module Connections
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3
2.2 Pin Description
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3
3 Circuit Module Physical Layout, Bill of Materials, and Schematic
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4
3.1 Board Layout
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4
3.2 Bill of Materials
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6
3.3 Schematic
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7
3.4 bq27441 Circuits Module Performance Specification Summary
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7
4 EVM Hardware and Software Setup
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8
4.1 Software Installation
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8
5 Troubleshooting Unexpected Dialog Boxes
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8
6 Hardware Connection
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9
6.1 Connecting the bq27441 Circuit Module to a Battery Pack
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9
6.2 PC Interface Connection
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9
7 Operation
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10
7.1 Starting the Program
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10
7.2 Setting Programmable bq27441 Options
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11
8 Calibration
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13
8.1 Calibrating the bq27441
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13
8.2 Voltage Calibration
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13
8.3 Board Offset Calibration
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13
9 Advanced Communication I
2
C
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14
9.1 I
2
C Communication
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14
10 Related Documentation from Texas Instruments
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