High Voltage Multi-Cell Synchronous Switch-Mode Charger Reference Design


Design files


This reference design provides a solution for charging the 7-cell Li-ion battery. It is an integrated Li-ion or Li-polymer switch-mode battery charge controller solution. It offers a constant-frequency synchronous switching PWM controller with high-accuracy charge current and voltage regulation. Other features include charge preconditioning, termination, and charge status monitoring. The solution board 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: 1-6s
  • 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.

TIDU091.PDF (775 K)

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

TIDR059.PDF (290 K)

Detailed schematic diagram for design layout and components

TIDR060.PDF (32 K)

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

TIDU092.PDF (362 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ24610Standalone 1-6 cell Buck battery charge controller with 5V-28V input

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report TIDA-00040 Test Results Aug. 26, 2013

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