System-Side Fuel (Gas) Gauge Dynamic Voltage Correlation Evaluation Module


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The BQ27621EVM-G1A evaluation module is a complete evaluation system for the bq27621-G1. The EVM includes one bq27621-G1 circuit module using DVC algorithm.  The bq27621-G1 should be used with batteries with a charge voltage from 4.2 volts to 4.35 volts.  A separate orderable EV2300 or EV2400 PC interface board for gas gauge interface along with a PC USB cable, and Windows™-based PC software is needed when using this EVM. The circuit module includes one bq27621-G1 integrated circuit and all other onboard components necessary to monitor and predict capacity for a system-side fuel gauge solution. The circuit module connects directly across the battery pack. With the USB-Based PC Interface Board for Battery Fuel (Gas) Gauge Evaluation Module (EV2300) or USB-Based PC Interface Board for Battery Fuel (Gas) Gauge Evaluation Module (EV2400) interface board and software, the user can:

  • Read the bq27621-G1 data registers.
  • Program the chipset for different configurations.
  • Log cycling data for further evaluation.
  • Evaluate the overall functionality of the bq27621-G1 solution under different charge and discharge conditions. The latest Windows™ – based PC software can be downloaded from the product folder on the Texas Instruments Web site.


Related Terms:

  • Battery Gas Gauge
  • Battery Fuel Gauge
  • Battery Fuel Gauge IC

  • Populated circuit module for quick setup and evaluation.
  • Downloadable software that can be used for data logging and analysis.
Battery fuel gauges
BQ27621-G1 System-side fuel gauge with Dynamic Voltage Correlation, battery gas gauge
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Evaluation board

BQ27621EVM-G1 — BQ27621EVM-G1 System-Side Fuel Gauge Dynamic Voltage Correlation Evaluation Module

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Technical documentation

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Type Title Date
Certificate BQ27621EVM-G1 EU Declaration of Conformity (DoC) 02 Jan 2019
More literature Battery Management Solutions for Wearable and Fitness Devices (Rev. C) 18 Aug 2014
EVM User's guide bq27621 EVM: Single-Cell Rechargeable Lithium Battery Gauge Evaluation Module (Rev. B) 23 Apr 2014
User guide Quick Start Guide for bq27621-G1 (Rev. A) 20 Jan 2014

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