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  1. #1
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    Push-Pull Converters snubber calculating

    Hi guys
    I need to calculate RCD snubber for push pull converter
    That work on 1Mhz switching frequency.
    Input voltage to the transformer is 24V
    I understand that I need to calculate the
    leakage inductance and the parasitic capacitance
    how do I do that? And finely calculate the RCD snubber?

    Thanks

    •   Alt14th May 2012, 17:03

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  2. #2
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    Re: Push-Pull Converters snubber calculating

    Dear Finkl
    Hi
    There are many simpler ways to calculate snubber networks available , would you like that i explain some of them for you ?
    Best Wishes
    Goldsmith
    When you sensed that i can help you , feel free to ask me .
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    Experience is a good professor of mine !
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    The only thing that i couldn't understand yet , is why humans should fight together ? why not helping each other to have a better world ?



    •   Alt14th May 2012, 18:21

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  3. #3
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    Re: Push-Pull Converters snubber calculating

    You can measure the primary leakage inductances on your push pull transformer, you can assume the dominant cap will be the mosfet, use a snubber cap 5-10x this value.
    calculate R from 0.5 x SQRT(L/C), if you have very high leakage and/or reflected energy from the secondary there are other ways to work out the RC based on Ipk at mosfet turn off and max power you can tolerate in the snubber R (e.g. 3W may be practical) this allows a higher value of C and more effective snubbing. Regards, Anna.[COLOR="Silver"]



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