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.


  • 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®


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

Design Documents

Design Documents contain the documents below.

Design Data

Design Data contains the contents listed below.

Used Toshiba Items

Part Number Device Category Portion Usage Description
Power MOSFET (N-ch 500V<VDSS≤700V) Primary side・1 N-ch MOSFET, 650 V, 0.38 Ω@10V, TO-220SIS, DTMOSⅤ
Power MOSFET (N-ch single 60V<VDSS≤150V) Secondary side
synchronous rectification・1
N-ch MOSFET, 100 V, 0.0115 Ω@10V, TSON Advance, U-MOSⅨ-H

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