10W Bias Supply for Brushless DC Applications with >75% Efficiency at Low Load Reference Design


Design files


The TIDA-00473 is a reference design of universal input, 10-W high efficiency, low cost power supply with three isolated outputs. This is a Constant-Voltage (CV) and Constant-Current (CC) flyback converter without Optical-Coupler and external MOSFET. The hardware is designed and tested to pass conducted emissions, surge, and EFT testing as per the EN55014 requirements for household appliances. This can be used in applications like cooker hoods and other appliances wherever motor drive along with user interface is involved.

  • Universal input voltage range to address customer needs across all regions
  • Up to 700-V Start-Up and Smart Power Management Enables < 30-mW Standby Power
  • Primary Side Regulation (PSR) control eliminates the optical-coupler
  • Multiple operating modes and valley switching for optimum efficiency over entire operating range
  • Valley Switching and Frequency Dithering to Ease EMI Compliance
  • No need of external voltage compensation components
  • Meets the requirements of Conducted Emissions standard – EN55022 class B
  • Meets the requirements of EFT norm IEC6000-4-4 & Surge norm IEC61000-4-5
  • Small Use PCB form factor (72 x 65 mm)
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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

TIDRI50.PDF (144 K)

Detailed schematic diagram for design layout and components

TIDRI51.PDF (211 K)

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

TIDRI52.PDF (92 K)

Detailed overview of design layout for component placement

TIDRI54.ZIP (706 K)

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

TIDCB76.ZIP (118 K)

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

TIDRI53.PDF (426 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28911700V Flyback switcher with constant-voltage constant-current and primary-side regulation

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide 10-W Bias Supply for BLDC Applications w/>75% Efficiency at Low Load Ref Design (Rev. B) May 12, 2016
Technical article Design an energy-efficient, lower-acoustic cooker hood with an elegant user interface Mar. 29, 2016

Related design resources

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TIDA-00472 230V/250W, Hi-η Sensorless Brushless DC Motor Drive with 30% Reduced Bulk Capacitor Reference Design

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