1 to 2s HDQ Li-Ion Battery Pack Manager Reference Design
TIDA-00884
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Key Document

Description

The Texas Instruments bq78z100 device is a Battery Pack Manager that integrates gas gauging, and protection for complete autonomous operation of 1-series to 2-series cell Li-Ion and Li-Polymer battery packs. The architecture enables communication between the fuel gauging processor and an external battery charger controller through HDQ broadcast commands. This reference design eases the design process for the customer given that it is a complete pack solution which includes gauging and protection of the Li-ion battery. It includes an overvoltage IC for additional safety protection.

Features
  • Fully Integrated gauge, protector  to support  1 to 2-Series Li-Ion or Li-Polymer cells
  • 2nd Level Protector provides Over Voltage Protection
  • bqstudio Software that allows data logging for system analysis
  • Impedance Track technology
  • Integrated SHA-1 authentication

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
BQ294502  Overvoltage Protection Device for 2- to 3-Cell Li-Ion Batteries, with 4.35v OVP  Battery management ICs  Sample & Buy View Design Kits & Evaluation Modules
BQ78Z100  Impedance Track™ battery fuel (gas) gauge for 1-series to 2-series  Battery management ICs  Sample & Buy View Design Kits & Evaluation Modules
CSD16412Q5A  25-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 16 mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
BQ294502 Download Download
BQ78Z100 Download
CSD16412Q5A VSONP (DQJ)| 8 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 130 10 Feb 2016
Design files (6)
Title Type Size (KB) Date
ZIP 1250 10 Feb 2016
ZIP 438 10 Feb 2016
PDF 388 10 Feb 2016
PDF 199 10 Feb 2016
PDF 78 10 Feb 2016
PDF 189 10 Feb 2016
Related Tools & Software

Software development (1)

Name Part Number Software Type
Battery Management Studio (bqStudio) Software  BQSTUDIO  Application software & framework 


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