5.2W Primary-Side Regulated Flyback With 108V to 305V AC Input Reference Design
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Key Document


The PMP30198 reference design uses the UCC28910 flyback controller with integrated MOSFET to generate two isolated outputs (18V@0.25A / 18V@0.04A) from an AC input. The UCC28910 implements primary-side regulation, eliminating the need for an opto-coupler and reducing the total component count.

  • Isolated outputs
  • Primary-side regulated
  • Valley switching
  • Integrated MOSFET
  • Test report available

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Schematic/Block Diagram

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Design Files

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(Output Voltage 1)
(Output Voltage 2)
Vin (Min) (V)108108
Vin (Max) (V)305305
Vout (Nom) (V)1818
Iout (Max) (A).25.04
Output Power (W)4.5.72
Input TypeACAC
TopologyFlyback- DCMFlyback- DCM

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LP2951  100-mA, 30-V, low-dropout voltage regulator with power good & enable  Power management  Sample & Buy View Design Kits & Evaluation Modules
UCC28910  700V Flyback switcher with constant-voltage constant-current and primary-side control  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)
LP2951 Download Download
Download -
Download Download
UCC28910 Download Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 950 20 Sep 2017
Design files (6)
Title Type Size (KB) Date
ZIP 254 20 Sep 2017
ZIP 410 20 Sep 2017
PDF 125 20 Sep 2017
PDF 120 20 Sep 2017
PDF 90 20 Sep 2017
PDF 130 20 Sep 2017

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