Small Form Factor 10W Offline Flyback Power Supply Reference Design


Design files


The PMP9517 is a high density constant voltage / constant current power supply with an 85VAC-265VAC input range and 5V/10W outptut. The design features primary side regulation (PSR) of a low cost power transistor (BJT). With low component count and low cost, the design is suitable for USB type power supplies used in smart phones, tablets, PDAs or digital cameras. This design is similar to PMP9135 but with a smaller overall size.

  • Primary Side Regulation (PSR)
  • +/- 5% Voltage Regulation
  • +/- 5% Current Regulation
  • Low Stand-by Power
  • High Voltage Startup
  • Low Cost BJT control

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.

TIDU264.PDF (941 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDC324.ZIP (3872 K)

Detailed schematic diagram for design layout and components

TIDR465.PDF (101 K)

Detailed schematic diagram for design layout and components

TIDR466.PDF (22 K)

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


Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28720Constant-voltage, constant-current controller with primary-side regulation for bipolar power devices

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Test report PMP9517 Test Results Mar. 20, 2014

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