National Semiconductor bq27411, User Manual

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1 SLUUAP3A – January 2014 – Revised July 2016
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Copyright © 2014–2016, Texas Instruments Incorporated
bq27411 EVM: System-Side Impedance Track™ Technology
Impedance Track is a trademark of Texas Instruments.
Microsoft, Windows are registered trademarks of Microsoft Corporation.
User's Guide
SLUUAP3A – January 2014 – Revised July 2016
bq27411 EVM: System-Side Impedance Track™
Technology
This evaluation module (EVM) is a complete evaluation system for the bq27411 fuel gauge. The EVM
includes one bq27411 circuit module with a current-sense resistor. A separate orderable EV2300 or
EV2400 PC interface board for fuel 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 bq27411 integrated
circuit and all other onboard components necessary to monitor and predict capacity for a pack-side fuel
gauge solution. The circuit module connects directly across the battery cell. With the EV2300 or EV2400
interface board and software, the user can:
• Read the bq27411 data registers
• Update the RAM for different configurations
• Log cycling data for further evaluation
• Evaluate the overall functionality of the bq27411 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 bq27411-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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3
3.1 Board Layout
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3
3.2 Bill of Materials
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5
3.3 Schematic
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6
3.4 bq27411 Circuits Module Performance Specification Summary
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6
4 EVM Hardware and Software Setup
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6
4.1 Software Installation
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7
5 Troubleshooting Unexpected Dialog Boxes
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7
6 Hardware Connection
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7
6.1 Connecting the bq27411 Circuit Module to a Battery Pack
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7
6.2 PC Interface Connection
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8
7 Operation
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8
7.1 Starting the Program
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8
7.2 Setting Programmable bq27411 Options
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10
8 Calibration
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12
8.1 Calibrating the bq27411
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12
8.2 Voltage Calibration
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12
8.3 Board Offset Calibration
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12
9 Related Documentation from Texas Instruments
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13
List of Figures