![]() ![]() The energy stored in the leakage inductance requires snubber circuits to limit voltage in the switching devices. ![]() If the transformer is designed to operate in a flyback converter, the main converter switch will be sensitive to voltage kickback from leakage inductance when the driving transistor turns off. This leakage inductance may cause power losses and influence EMI emissions especially at higher converter switching frequencies. Designing a transformer to obtain greater magnetizing inductance tends to increase leakage inductance, especially if isolation is required between the primary and secondary winding. The impact of leakage inductance from SMPS transformers depends on several factors.
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