Active Clamp Forward AC-DC Power Supply Basic Simulation Circuit

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

Circuit of active clamp forward AC-DC power supply basic simulation circuit.
Waveforms of active clamp forward AC-DC power supply basic simulation circuit.


  • Basic simulation circuit of Active Clamp Forward AC-DC power supply that can operate on OrCAD®.
  • Input voltage : DC 200 V
  • Output voltage : DC 5 V
  • Output power : 100 W


  • 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.

Name Date

Design, File

“Design・File” contains the contents listed below.

Name Date

Toshiba items

Part Number Device Category Portion Usage Description
TK10A60W MOSFET Primary side・1 DTMOSⅣ/600V/380mΩ(Max)@VGS=10V/TO-220SIS
TPH2R003PL MOSFET Secondary side
synchronous rectification・2
U-MOSⅨ-H/30V/2mΩ(Max)@VGS=10V/SOP Advance



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