1-4 Cell Li+ Battery SMBus Charge Controller Reference Design


Design files


This reference design is a complete charger module for evaluating a multi-cell synchronous notebook turbo boost charge using the bq24735 devices. It is designed to deliver up to 4 A of charge current to Li-ion or Li-polymer applications. The charge current is programmable by SMBus interface through the EV2300 interface board. The reference design does not include the EV2300 interface board. In order to evaluate the this solution, a user must order the EV2300 interface board separately.

  • # Series Cells: 1 to 4S
  • Max Input Volts: 24V
  • Max Charge Current: 8A
  • Topology: Switch mode

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.

TIDU089.PDF (896 K)

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

TIDR057.PDF (89 K)

Detailed schematic diagram for design layout and components

TIDR058.PDF (29 K)

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

TIDU090.PDF (371 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ24735SMBus 1-4 cell Buck battery charge controller to support turbo boost mode

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

Technical documentation

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Type Title Date
Test report TIDA-00039 Test Results Aug. 26, 2013

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