TIDA-00038

Multicell Synchronous Switchmode Reference Design

TIDA-00038

Design files

Overview

This reference design is a complete charger module for evaluating a multicell (1 to 4 cells) synchronous notebook charger using the bq24707 device. 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 an SMBus interface through the EV2300 interface board. The reference design does not come with the EV2300 interface board, so it must be ordered separately. The design contains high-efficiency, synchronous battery chargers, offering low component count for space-constrained, multi-chemistry battery-charging applications. The charge voltage, charge current, input current, and flexible charge option are programmable via SMBus interface.

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

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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.

TIDU087.PDF (828 K)

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

TIDR055.PDF (147 K)

Detailed schematic diagram for design layout and components

TIDR056.PDF (40 K)

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

TIDU088.PDF (427 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ24707SMBus 1-4 cell Buck battery charge controller with independent comparator and circuit protection

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report TIDA-00038 Test Results Aug. 26, 2013

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