TIDA-00031 Reference Design

Texas Instruments

System-Side ImpedanceTrack Fuel Gauge with Integrated Sense Resistor Reference Design

Description

This reference design is a complete evaluation system solution for the bq27421. The solution includes one bq27421 circuit module with an integrated current-sense resistor. A separated 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 design. The circuit module includes one bq27421 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 EV2300 or EV2400 interface board and software: the user can: (1)Read the bq27421 data registers. (2)Program the chipset for different configurations. (3)Log cycling data for further evaluation. (4)Evaluate the overall functionality of the bq27421 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.

Features
  • # Series Cells: 1SMax Input Volts: 4.5VMax Charge Current: 2ACommunication: I2CFeatures: Integrated sense resistorPopulated circuit module for quick setup and evaluation
Applications
Product Categories
  • Power management

Parts

Part Number Name Companion Part
BQ27421-G1 BQ27421-G1 Buy Datasheet

Bill Of Materials

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Schematic

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Design File

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Test Data

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Other Documents

Title Updated Type Size (KB)
TIDA-00031 PCB 26 Aug 2013 PDF 69
TIDA-00031 BOM 26 Aug 2013 PDF 32
TIDA-00031 Schematic 26 Aug 2013 PDF 32