Active Clamp Forward DC-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 DC-DC power supply.

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


  • Basic simulation circuit of Active Clamp Forward DC-DC power supply that can operate on OrCAD®.
  • Input voltage : DC 24 V
  • Output voltage : DC 3.3 V
  • Output power : 70 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
TPN4R806PL MOSFET Primary side・1 U-MOSⅨ-H/60V/4.8mΩ(Max)@VGS=10V/TSON Advance
TPCP8110 MOSFET Primary side・1 U-MOSⅥ/-60V/39.5mΩ(Max)@VGS=-10V/PS-8
TPH2R003PL MOSFET Secondary side
synchronous rectification・2
U-MOSⅨ-H/30V/2mΩ(Max)@VGS=10V/SOP Advance



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