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

Materials for designers, such as an overview of circuit operation and explanations of design considerations. Please click on each tab to view the contents.

Design Data

Provides circuit data that can be loaded into EDA tools, PCB layout data, and data used in PCB manufacturing. Available in formats from multiple tool vendors. You can freely edit it with your preferred tool.

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

We provide materials useful for designing and considering similar circuits, such as application notes for installed products. Please click on each tab to view the contents.


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