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


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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Design Guide

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Design Files

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TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
UCC28911  700V Flyback switcher with constant-voltage constant-current and primary-side regulation  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
UCC28911 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 1578 12 May 2016
Design files (6)
Title Type Size (KB) Date
ZIP 118 08 Oct 2015
ZIP 706 08 Oct 2015
PDF 426 08 Oct 2015
PDF 92 08 Oct 2015
PDF 211 08 Oct 2015
PDF 144 08 Oct 2015
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Reference Designs (1)

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