Texas Instruments bq3050EVM, User Manual

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User ' s Guide
SLUU532A – November 2011 – Revised December 2011
bq3050EVM SBS 1.1 Compliant Advanced Gas Gauge
Battery Management Solution EVM
The bq3050EVM is a complete evaluation system for the bq3050/bq29440 battery management system.
This system includes one bq3050/bq29440 circuit module, a current sense resistor, four thermistors, and a
link to Windows
®
-based PC software.
The circuit module includes one bq3050 IC, one bq29440 IC, and all other onboard components
necessary to monitor and predict capacity, perform cell balancing, monitor critical parameters, protect the
cells from overcharge, overdischarge, short circuit, and overcurrent in 2-series, 3-series, or 4-series cell
Li-Ion or Li-Polymer battery packs. The circuit module connects directly across the cells in a battery.
With the EV2300 interface board and software, users can read the bq3050 data registers, program the
chipset for different pack configurations, log cycling data for further evaluation, and evaluate the overall
functionality of the bq3050/bq29440 solution under different charge and discharge conditions.
Contents
1 Features
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2
2 bq3050 Device-Based Circuit Module
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2
3 bq3050 Circuit Module Schematic
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3
4 Circuit Module Physical Layouts and Bill of Materials
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3
5 EVM Hardware and Software Setup
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10
6 Troubleshooting Unexpected Dialog Boxes
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10
7 Hardware Connection
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10
8 Operation
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12
9 Calibration Screen
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14
10 Pro (Advanced) Screen
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16
11 Related Documentation from Texas Instruments
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17
List of Figures
1 bq3050EVM-001 Layout (Silk Screen)
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4
2 Top Assembly
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4
3 Top Layer
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5
4 Inner Layer 1
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5
5 Inner Layer 2
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5
6 Bottom Layer
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5
7 Bottom Assembly
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8 Schematic
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9 bq3050 Circuit Module Connection to Cells and System Load/Charger
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11
10 SBS Data Screen
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12
11 Data Flash Screen, 1st Level Safety Class
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13
12 Calibration Screen
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15
13 Pro (Advanced) Screen
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16
List of Tables
1 Ordering Information
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2
2 Bill of Materials
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7
1 SLUU532A – November 2011 – Revised December 2011 bq3050EVM SBS 1.1 Compliant Advanced Gas Gauge Battery Management
Solution EVM
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