24-V, 50-W BLDC Motor Sinusoidal Drive Reference Design for Air Purifier Fans


Design files


The TIDA-00656 reference design is a cost-effective, small form-factor (SFF),  three-phase sinusoidal motor drive for brushless DC (BLDC) motor up to a power of 50 W at 24 V. The board accepts 24 V at the input and provides three motor outputs to drive the BLDC motor sinusoidally. By using a microcontroller (MCU), in this case the MSP430G2303, the speed loop is closed externally after accepting the speed command over IR (infra-red) sensor.

  • 50-W, 24-V Drive Capable of Driving Brushless DC (BLDC) Motors With Sinusoidal Commutation
  • MSP430G2303 Functions to Accept the IR input and Close External Speed Loop
  • DRV10983 Uses Proprietary Sensorless Control Scheme to Provide Continuous Sinusoidal Drive, Significantly Reducing Pure Tone Acoustics That Typically Occur as a Result of Commutation
  • Integrated Buck/ Linear Regulator to Efficiently Step Down Supply Voltage to 3.3 V for Powering Both Internal and External Circuits (TI MSP430™ MCU in This Design)
  • Hardware design tested at 50W with good thermal performance
  • This Design is a Tested, Ready to Use Hardware and Software Platform for Driving 12V/24V, <50W BLDC Motors
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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.


Reference design overview and verified performance test data

TIDRI55.PDF (288 K)

Detailed schematic diagram for design layout and components

TIDRI56.PDF (84 K)

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

TIDRI57.PDF (88 K)

Detailed overview of design layout for component placement

TIDRI59.ZIP (530 K)

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

TIDCB77.ZIP (318 K)

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

TIDRI58.PDF (560 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Integrated control BLDC drivers

DRV1098324-V nominal, 3-A peak sensorless sinusoidal control 3-phase BLDC motor driver

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430G230316 MHz MCU with 4KB Flash, 256B SRAM, UART/SPI/I2C, timer

Data sheet: PDF | HTML

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Technical documentation

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Type Title Date
* Design guide 24-V, 50-W BLDC Motor Sinusoidal Drive for Air Purifier Fans Design Guide (Rev. A) Aug. 29, 2016
White paper Replacing single-phase ACIMs with three-phase BLDC motors saves energy Apr. 14, 2016

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