Flyback AC-DC Power Supply Basic Simulation Circuit

This reference design provides OrCAD® based simulation circuit, simulation results and design guide. This is for designing flyback topology of AC-DC power supply.

Circuit of flyback AC-DC power supply basic simulation circuit.
Waveforms of flyback AC-DC power supply basic simulation circuit.


  • Basic simulation circuit of Flyback AC-DC power supply that can operate on OrCAD®.
  • Input voltage : DC 380V
  • Output voltage : DC 16V
  • Output power : 65W


  • Bundled simulation circuit and device models
  • Able to edit power supply specificatoin and devices freely
  • Able to set power supply specificatoin and ciruit parameters on OrCAD®

Reference design files

Design, Document

“Design・Document” contains the documents listed below.

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Design, File

“Design・File” contains the contents listed below.

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Toshiba items

Part Number Device Category Portion Usage Description
TK380A65Y MOSFET Primary side・1 DTMOSV/650V/380mΩ(Max)
TPN1200APL MOSFET Secondary side
synchronous rectification・1
@VGS=10V/TSON Advance


*Switched Mode Power Supply Library is the service which can select and download various basic topologies of power supply unit based on your actual requirement to verify the behavior of MOSFET with your simulation environment. 


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