FAIRCHILD Design Guidelines for RCD Snubber of Flyback Converters handbook

Update: 28 September, 2023

This article presents some design guidelines for the RCD snubber of flyback converters. When the MOSFET turns off, a high-voltage spike occurs on the drain pin because of a resonance between the leakage inductor (Llk) of the main transformer and the output capacitor (COSS) of the MOSFET. The excessive voltage on the drain pin may lead to an avalanche breakdown and eventually damage the MOSFET. Therefore, it is necessary to add an additional circuit to clamp the voltage.

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File format: PDF

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MD5 Checksum: 2D765063A3B5F4092A5571A95F93FC56

Publication date: 12 July, 2012

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PDF Link: FAIRCHILD Design Guidelines for RCD Snubber of Flyback Converters handbook PDF