1.6MHz Synchronous Switch-Mode Li-Ion/Li-Polymer Stand-Alone Battery Charger Reference Design


Design files


This reference design is highly integrated stand-alone Li-ion and Li-polymer switch-mode battery charge solution with two integrated N-channel power MOSFETs and a power path selector gate driver. It offers a constant-frequency synchronous PWM controller with high accuracy regulation of input current, charge current and voltage. It also provides battery detection, pre-conditioning, charge termination, and charge status monitoring. The reference design is also called the HPA715 (-001). This solution is optimized for a 5V input voltage and charges a single cell 4.2V Li-ion battery.

  • # Series Cells: 1 to 3S
  • Max Input Volts: 16V
  • Max Charge Current: 2.5A
  • 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.

TIDU069.PDF (657 K)

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

TIDR038.PDF (39 K)

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

TIDU070.PDF (424 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ24133Standalone 1-3 cell 2.5A synchronous Buck battery charger with external Power Path

Data sheet: PDF
Battery charger ICs

BQ24170Standalone 1-3 cell 4A synchronous Buck battery charger with Power Path selector

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report TIDA-00027 Test Results Aug. 26, 2013

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