90-265VAC, 91% Efficiency, >0.94 PF Buck-PFC plus 24V, 30W Brushless DC Motor Drive Reference Design


Design files


For achieving energy efficiency, ceiling fans and ventilation fans are moving from simple AC induction motors to brushless DC motors (BLDC). Operation of BLDC motors from AC supply requires AC-DC conversion with high efficiency and power factor. It also needs an inverter which is controlled efficiently for low noise operation. The reference design TIDA-00652 helps to meet these challenges of higher efficiency and power factor in a simpler way, by using a single stage power supply to convert the AC mains input into low voltage DC output. It also combines a fully integrated and well protected single chip sensor-less sinusoidal brushless motor controller for low noise operation.

  • High efficiency, single power stage to convert 230 VAC to 24 VDC
  • Buck PFC topology, to achieve high input Power Factor (>0.94) and high efficiency (>91%)
  • Universal input capability (50/60 Hz, 90-265 VAC) with minimum variation in efficiency
  • Startup and full speed operation even at 90 VAC Input
  • Highly integrated and protected single chip, sinusoidal brushless motor controller reduces external parts count and helps avoiding motor control programming overhead
  • IR Remote based speed control
Output voltage options TIDA-00652.1
Vin (Min) (V) 90
Vin (Max) (V) 265
Vout (Nom) (V) 24
Iout (Max) (A) 1.2
Output Power (W) 28.8
Isolated/Non-Isolated Non-Isolated
Input Type AC
Topology Buck- PFC
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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


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDRHR1.ZIP (1899 K)

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

TIDCB40.ZIP (1068 K)

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


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

MSP430G223116 MHz MCU with 2KB Flash, 128B SRAM, 10-bit ADC, SPI/I2C, timer

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Power factor correction (PFC) controllers

UCC2818018-kHz-250-kHz CCM PFC controller with enhanced startup & transient response

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Technical documentation

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Type Title Date
* Design guide 90-265-VAC, 91% Efficiency, >0.94 PF Buck-PFC Plus 24-V, 30-W BLDC Ref Design (Rev. A) May 12, 2016
White paper Replacing single-phase ACIMs with three-phase BLDC motors saves energy Apr. 14, 2016
Technical article Next-generation ceiling and exhaust fans leverage BLDC drive technology for increa PDF | HTML Mar. 10, 2016
Technical article Acoustic noise in home appliances due to torque ripple in motor drives – part 2 PDF | HTML Feb. 25, 2016
Technical article Acoustic noise in home appliances due to torque ripple in motor drives – part 1 PDF | HTML Feb. 18, 2016

Related design resources

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TIDA-00386 BLDC Ceiling Fan Controller with Sensorless Sinusoidal Current Control

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