SMBus 1- to 4-cell Hybrid Power Boost Mode Battery Charge Controller Reference Design


Design files


The TIDA-00657 reference design enables high efficiency (90+% @1-2A)  and faster charge with high charging current up to 3A. The design uses TI's BQ24780 Industrial Innovative Charge Controlller with Hybrid Power Boost Mode and  also features power and processor hot monitoring capability.

  • Support 1~4 Cell battery from 4.5V~24V adapter
  • Industrial Innovative Charge Controller with Hybrid Power Boost Mode
  • High Accuracy Power and Current Monitoring for CPU throttling
  • Automatic NMOS Power Source Selection from Adapter or Battery
  • Programmable Input Current, Charge Voltage, Charge and Discharge Current Limit
  • Both host control and autonomous charging when the host is not available
  • High Integration: Learn function, battery present monitor, boost mode indicator, loop compensation, BTST diode
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Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data

TIDRH84.PDF (496 K)

Detailed schematic diagram for design layout and components

TIDRH85A.PDF (174 K)

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

TIDRH86.PDF (293 K)

Detailed overview of design layout for component placement

TIDRH88.ZIP (717 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDRH87.PDF (1887 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ24780SSMBus 1-4 cell Buck battery charge controller to support hybrid power boost mode

Data sheet: PDF | HTML
N-channel MOSFETs

CSD17308Q330-V, N channel NexFET™ power MOSFET, single SON 3 mm x 3 mm, 11.8 mOhm

Data sheet: PDF | HTML
Supervisor & reset ICs

TPS3898Single-channel, ultra-small, adjustable supervisor with active-low, open-drain output

Data sheet: PDF | HTML

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Evaluation board

BQ24780SEVM-583 — 1-4 Cell Hybrid Power Boost Mode Battery Charge Controller Evaluation Module

The bq24780S evaluation module (EVM) is a complete charger module for evaluating the high-efficiency, synchronous, 1-4 cell turbo boost mode battery charge controller with power monitoring and /PROCHOT for CPU throttling, charges one, two, three or four series Li-ion and Li-polymer cells used in (...)

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Technical documentation

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Type Title Date
* Design guide TIDA-00657 Test Results (Rev. A) Sep. 15, 2017

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