High voltage Flyback with two outputs: 25V @ 0.5A & 6.5V @ 3A Reference Design


Design files


This design is a high voltage flyback for 200Vdc…1000Vdc input voltage which provides 6.5V/3A regulated and 23V/0.5A unregulated (clamped to 27V). TIs UCC28610 Quasi Resonant controller enables a high efficiency, even at high input voltage

  • Provides 25V and 6.5V outputs Non-Isolated
  • Over 84% efficiency at full load
  • Ultra wide high voltage range 200Vdc to 1000Vdc
Output voltage options PMP5725.1 PMP5725.2
Vin (Min) (V) 200 200
Vin (Max) (V) 1000 1000
Vout (Nom) (V) 25 6.5
Iout (Max) (A) .5 3
Output Power (W) 12.5 19.5
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC
Topology Flyback- Quasi Resonant Flyback- Quasi Resonant
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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.

TIDU620.PDF (374 K)

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


Detailed schematic diagram for design layout and components


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


Includes TI products in the design and potential alternatives.

Flyback controllers

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Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP5725 Test Results Oct. 24, 2014

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