Multi Cell Synchronous Switch-Mode Charger Reference Design


Design files


This reference design, using bq24600, is a highly integrated Li-ion or Li-polymer switch-mode battery charge controller solution. It allows for a highly integrated switch-mode battery charge controller designed specifically to charge Lithium Phosphate battery chemistries. The design contains a highly integrated super capacitor switch-mode charge controller, which offers a constant-frequency synchronous PWM controller with high accuracy charge current and voltage regulation, adapter current regulation, termination, charge preconditioning, and charge status monitoring, The design charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum user-selectable level. A programmable charge timer provides a safety backup for charge termination. The design automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low-quiescent current sleep mode when the input voltage falls below the battery voltage.


• # Series Cells: 1 to 6S
• Max Input Volts: 28V
• Max Charge Current: 10A
• 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.

TIDU085.PDF (1054 K)

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

TIDR053.PDF (271 K)

Detailed schematic diagram for design layout and components

TIDR054.PDF (40 K)

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

TIDU086.PDF (657 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Technical documentation

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Type Title Date
Test report TIDA-00037 Test Results Aug. 26, 2013

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