Flyback Transformer Leakage Inductance
Part 3: RC Leakage Inductance Clamps
by Dennis L. Feucht
Innovatia Laboratories
Due to the impracticality of high-voltage Zener-diode clamps, an alternative
for the primary circuit of a flyback converter is the RC clamp. It is more
complex to design than the constant-voltage Zener clamp because its capacitance
resonates with the leakage inductance being clamped. The clamp is analyzed
here with the goal of deriving the necessary design equations.
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