Flyback DC-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 DC-DC power supply.

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


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


  • Basic simulation circuit of Flyback AC-DC power supply that can operate on OrCAD®.
Input voltage DC 24V
Output voltage DC 5V
Output power 30W
Waveforms of flyback DC-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 single 30V<VDSS≤60V) Primary side・1 N-ch MOSFET, 60 V, 0.007 Ω@10V, TSON Advance, U-MOSⅨ-H
Power MOSFET (N-ch single 30V<VDSS≤60V) Secondary side synchronous rectification・1 N-ch MOSFET, 40 V, 0.0023 Ω@10V, TSON Advance, U-MOSⅨ-H

Related Documents


Technical inquiry

Contact us

Contact us

Frequently Asked Questions

A new window will open