85-265VAC Input, 5V/2A PSR Flyback Reference Design


Design files


The PMP11185 reference design uses the UCC28710 to provide an isolated 5V at 2A output.  The UCC28710 implements primary-side regulation, eliminating the need for an opto-coupler and reducing the size and cost of the design.  The supply has been optimized for minimal standby power consumption.

  • Minimal component count provides low cost solution
  • Over 78% average 4-point efficiency
  • Constant current regulation prevents excessive currents in overload
  • Less than 20mW standby power consumption
Output voltage options PMP11185.1
Vin (Min) (V) 85
Vin (Max) (V) 265
Vout (Nom) (V) 5
Iout (Max) (A) 2
Output Power (W) 10
Isolated/Non-Isolated Isolated
Input Type AC
Topology Flyback- Quasi Resonant

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.

TIDUAR6.PDF (1999 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


Detailed overview of design layout for component placement


Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28710Constant-voltage, constant-current PWM with PSR, valley switching & Programmable cable compensation

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

Technical documentation

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Type Title Date
* Test report PMP11185 Test Results Sep. 24, 2015

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