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LLC converter..no chance of reverse recovery in primary side?

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cupoftea

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Hi,
Would you agree that for a LLC resonant converter which is always operated above the lower resonance frequency, there is never any chance of reverse recovery in the primary transistors?.

..apart from obviously when vout is well below designed regulation level, say st startup or after a severe noload to fullload transient.....but for that case, you would always raise the switching frequency, and then gradually bring it down until it was at the upper resonant frequency.

Also, for high current outputs, say 300A at 12V, do you agree the LLC resonant can be used , and secondaries can be "daisy chained" and then there outptus paralleled?
 

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