TIDA-00252

Voltage Based Gas Gauge Reference Design

TIDA-00252

Design files

Overview

The Texas Instruments bq27621-G1 is an easy to configure microcontroller peripheral that provides system-side fuel gauging for single-cell Li-ion batteries. This device requires minimal user configuration and system microntroller development. The design will provide State of Charge indication for Li-Ion batteries.

Features
  • Eliminates the need for a sense resistor;
  • Powered directly from battery with integrated LDO;
  • Supports both embedded and removable batteries; Easy to configure based on the Dynamic Voltage Correlation algorithm
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

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

TIDU627.PDF (157 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDRBK8.PDF (118 K)

Detailed schematic diagram for design layout and components

TIDRBK9.PDF (79 K)

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

TIDRBL0.PDF (115 K)

Detailed overview of design layout for component placement

TIDRBL1.PDF (201 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Battery fuel gauges

BQ27621-G1System-side fuel gauge with Dynamic Voltage Correlation, battery gas gauge

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report TIDA-00252 Test Results Oct. 27, 2014

Related design resources

Hardware development

EVALUATION BOARD
BQ27621EVM-G1 System-Side Fuel (Gas) Gauge Dynamic Voltage Correlation Evaluation Module

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