1 to 2s I2C Li-Ion Battery Pack Manager Reference Design


Design files


The Texas Instruments bq28z610 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 internal battery charger controller through I2C 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 over-voltage IC for additional safety protection.

  • Fully Integrated gauge, protector to support 1 to 2-Series Li-Ion or Li-Polymer cells
  • 2nd Level Protector provides Over Voltage Protection
  • Impedance Track Technology
  • Integrated SHA-1 Authentication
  • This circuit design is tested and includes orderable EVM, User's Guide, and evaluation software

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement

TIDRKG2.ZIP (1250 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Battery fuel gauges

BQ28Z610Battery fuel gauge with integrated protector for 1-2 series packs

Data sheet document-pdfAcrobat PDF open-in-new HTML
Battery fuel gauges

BQ28Z610-R1Battery fuel gauge with integrated protector for 1-2 series packs

Data sheet document-pdfAcrobat PDF open-in-new HTML
Battery protectors

BQ294502Overvoltage Protection Device for 2- to 3-Cell Li-Ion Batteries, with 4.35v OVP

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

CSD16412Q5A25-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 16 mOhm

Data sheet document-pdfAcrobat PDF

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Evaluation board

BQ28Z610EVM-532 — Bq28z610 EVM 1-Cell to 2-Cell Programmable Battery Manager Evaluation Module

The bq28z610 EVM evaluation module (EVM) is a complete evaluation system for the bq28z610 or bq294502 battery management system. The EVM includes one bq28z610 and bq294502 circuit module and a link to Windows™ based PC software. The circuit module includes one bq28z610  integrated circuit (...)

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Technical documentation

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Type Title Date
* Design guide TIDA-00895 Test Results Feb. 03, 2016

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