Low Power Flyback Bias Supply Reference Design With Ultra Wide Input Voltage Range


Design files


The PMP20708 reference design uses UCC28881 low cost MOSFET integrated controller to provide 24V/30mA and 5V/30mA dual-output from an ultra-wide 24V to 264V (AC or DC) input. The board is in a small form factor of 30mm x 41mm x 12mm with minimized populated parts.

  • 24V to 265V input (AC or DC)
  • Board dimension: 30mm x 41mm x 12mm
  • 24V/30mA and 5V/30mA dual outputs
  • Test report included
Output voltage options PMP20708.1 PMP20708.2
Vin (Min) (V) 24 24
Vin (Max) (V) 265 265
Vout (Nom) (V) 24 5
Iout (Max) (A) .03 .03
Output Power (W) .72 .15
Isolated/Non-Isolated Isolated Isolated
Input Type AC AC
Topology Flyback- Non Sync Flyback- Non Sync
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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.

TIDUDH0.PDF (2053 K)

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

TIDRS78A.PDF (138 K)

Detailed schematic diagram for design layout and components

TIDRS79.PDF (29 K)

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

TIDRS80.PDF (81 K)

Detailed overview of design layout for component placement

TIDRS82A.ZIP (502 K)

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

TIDCDQ2.ZIP (1186 K)

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

TIDRS81.PDF (245 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Flyback controllers

UCC28881700-V Lowest Quiescent current off-line switcher

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP20708 Test Results Aug. 15, 2017
Technical article Unique techniques to increase controller power Aug. 23, 2017

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