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bq28400EVM-001 SBS 1.1 Compliant Tablet PC and
Netbook 2-Series Cell Li-Ion Battery Gas Gauge and
The bq28400EVM-001 is a complete evaluation system for the bq28400/bq29200 battery management
system. The evaluation module (EVM) includes one bq28400/bq29200 circuit module. Windows™-based
PC software can be downloaded from the bq28400EVM product web page. The circuit module includes
one bq28400 integrated circuit (IC), one bq29200 IC, and all other onboard components necessary to
monitor and predict capacity, perform cell balancing, monitor critical parameters, and protect the cells from
overcharge, over-discharge, short-circuit, and overcurrent in 2-series cell Li-ion or Li-Polymer battery
packs. The circuit module connects directly across the cells in a battery. With the EV2x00 interface board
and software, the user can read the bq28400 data registers, program the chipset for different pack
configurations, log cycling data for further evaluation, and evaluate the overall functionality of the
bq28400/bq29200 solution under different charge and discharge conditions.
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SLUU494 - February 2011
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Li-Ion Battery Gas Gauge and Protection
User's Guide
SLUU494 - February 2011
Protection
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Table of Contents
Related Manuals for Texas Instruments bq28400EVM-001
Summary of Contents for Texas Instruments bq28400EVM-001
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Page 1: Table Of Contents
Netbook 2-Series Cell Li-Ion Battery Gas Gauge and Protection The bq28400EVM-001 is a complete evaluation system for the bq28400/bq29200 battery management system. The evaluation module (EVM) includes one bq28400/bq29200 circuit module. Windows™-based PC software can be downloaded from the bq28400EVM product web page. The circuit module includes... -
Page 2: Contents 1 Features
• The system load and charger connect across PACK+ and PACK– • To the system-present pin (PRES) bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell SLUU494 – February 2011 Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback... -
Page 3: Bq28400 Circuit Module Schematic
FET Q1 drives TP8 low if a fuse-blow condition occurs (a pull-up at TP8 is required); so, monitoring TP8 can be used to test this condition. SLUU494 – February 2011 bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback... -
Page 4: Circuit Module Physical Layouts And Bill Of Materials
7), and assembly drawings for the bq28400 module. Figure 1. bq28400EVM-001 Layout (Silk Screen) Figure 2. Top Assembly bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell SLUU494 – February 2011 Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback... -
Page 5: Top Layer
Figure 3. Top Layer Figure 4. Internal Layer 1 Figure 5. Internal Layer 2 SLUU494 – February 2011 bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback © 2011, Texas Instruments Incorporated... -
Page 6: Bottom Layer
Circuit Module Physical Layouts and Bill of Materials www.ti.com Figure 6. Bottom Layer Figure 7. Bottom Assembly bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell SLUU494 – February 2011 Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback... - Page 7 1/16-W, 5% Resistor, Chip, 0603 1/16-W, 5% Resistor, Chip, 0603 1/16-W, 5% SLUU494 – February 2011 bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback © 2011, Texas Instruments Incorporated...
- Page 8 Alpha 1854-7 Awg, Brown, 18 Inches (+/- 3 inches) (SDA) Heatshrink 1" bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell SLUU494 – February 2011 Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback © 2011, Texas Instruments Incorporated...
- Page 9 White - Pin # 2 (Signal SCL) Black - Pin # 1 (GND) SLUU494 – February 2011 bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback © 2011, Texas Instruments Incorporated...
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Page 10: Schematic
Circuit Module Physical Layouts and Bill of Materials www.ti.com Figure 8. Schematic bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell SLUU494 – February 2011 Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback © 2011, Texas Instruments Incorporated... -
Page 11: Evm Hardware And Software Setup
— Charge and discharge current EVM Hardware and Software Setup This section describes how to install the bq28400EVM-001 PC software, and how to connect the components of the EVM. System Requirements The bq28400 EVSW software requires Windows™ 2000 or Windows XP. Drivers for Windows 98SE are provided, but Microsoft™... -
Page 12: Bq28400 Circuit Module Connection To Cells And System Load/Charger
2. Connect the PC USB cable to the EV2x00 and the PC USB port. The bq28400 is now set up for operation. bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell SLUU494 – February 2011 Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback ©... -
Page 13: Operation
Operation This section details the operation of the bq28400 EVSW software. Starting the Program Run the bq Gas Gauge Evaluation Software from the Start | Programs | Texas Instruments | bq28400 EVSW menu sequence. The SBS Data screen (Figure 10) appears. Data begins to appear once the user clicks the Refresh (single time scan), or when the Keep Scanning checkbox is checked. -
Page 14: Sbs Data Screen
Setting Programmable bq28400 Options NOTE: It is very important to have the correct setting of these options to get the best performance. bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell SLUU494 – February 2011 Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback ©... -
Page 15: Data Flash Screen, 1St Level Safety Class
| Write All | button. SLUU494 – February 2011 bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback... -
Page 16: Calibration Screen
Pack Calibration calibrates incorrectly. Apply a known voltage between PACK+ and PACK–. Enter the actual voltage in the textbox. Click Calibrate Pack Voltage. bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell SLUU494 – February 2011 Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback ©... -
Page 17: Calibration Screen
Calibration Screen www.ti.com Figure 12. Calibration Screen SLUU494 – February 2011 bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback © 2011, Texas Instruments Incorporated... -
Page 18: Pro (Advanced) Screen
10.3 Programming The Pro (Advanced) Screen enables device reprogramming from unencrypted and encrypted files. bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell SLUU494 – February 2011 Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback... -
Page 19: Pack Assembly And The Bq28400
This section describes the recommended assembly sequence for a bq28400-based battery pack. This procedure results in the most time-efficient setup of the battery pack. SLUU494 – February 2011 bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback... - Page 20 Section 9 to calibrate the EVM. To enable certain features and for gauging, refer to the Technical Reference Manual (SLUU431). bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell SLUU494 – February 2011 Li-Ion Battery Gas Gauge and Protection Submit Documentation Feedback ©...
- Page 21 EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
- Page 22 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
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