bq78z100EVM 1s-2s Li-ion Battery Pack Manager Evaluation Module


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The bq78z100EVM-532 evaluation module (EVM) is a complete evaluation system for the bq78z100 or bq294502 battery management system. The EVM includes one bq78z100 and bq294502 circuit module and a link to Windows™ based PC software. The circuit module includes one bq78z100  integrated circuit (IC), one bq294502 IC, and all other onboard components necessary to monitor and predict capacity, perform cell balancing, monitor critical parameters, protect the cells from overcharge, over-discharge, short-circuit, and over-current in 1- or 2-series cell Li-ion or Li-polymer battery packs. The circuit module connects directly across the cells in a battery. With the EV2400 interface board and software, the user can read the bq78z100 data registers, program the chipset for different pack configurations, log cycling data for further evaluation, and evaluate the overall functionality of the solution under different charge and discharge conditions using HDQ communication protocol.

  • Complete evaluation system for the bq78z100EVM 1s-2s Battery Pack Manager Evaluation Module and bq294502 independent overvoltage protection IC
  • Populated circuit module for quick setup
  • Software that allows data logging for system analysis

Cable to connect the EVM to an EV2400 (CBL002)

Battery fuel gauges
BQ78Z100 Impedance Track™ battery fuel (gas) gauge for 1-series to 2-series


Battery protectors
BQ294502 Overvoltage Protection Device for 2- to 3-Cell Li-Ion Batteries, with 4.35v OVP


N-channel MOSFETs
CSD16412Q5A 25-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 16 mOhm

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Evaluation board

BQ78Z100EVM-532 — bq78z100EVM 1s-2s Li-ion Battery Pack Manager Evaluation Module

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Technical documentation

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Type Title Date
* EVM User's guide bq78z100EVM 1s-2s Li-ion Battery Pack Manager Evaluation Module Sep. 14, 2015
Certificate BQ78Z100EVM-532 EU Declaration of Conformity (DoC) Jan. 02, 2019

Related design resources

Hardware development

EV2400 USB-Based PC Interface Board for Battery Fuel (Gas) Gauge Evaluation Module

Software development

BQSTUDIO Battery Management Studio (bqStudio) Software

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