Flyback Converter with No Snubbers

by Dr. Ray Ridley, Ridley Engineering, Power Systems Design Europe, Nov 01 2007

Focus:
In flyback converters, transformer leakage inductance and stray circuit capacitances cause ringing, which can damage the FET and produce EMI. To counter these effects, the ringing can be damped using an RC snubber and/or the voltage on the drain of the FET can be clamped using an RCD clamp.

What you’ll learn:

• How to design an RCD clamp for a flyback converter

Notes:
This article is found in the Power Systems Design archive. To access the archive, you must log in as a member of the PSD Community at www.powersystemsdesign.com/signup.

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