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high speed gate drive for mosfets

Discussion in 'Misc Electronics' started by exxos, Oct 28, 2004.

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  1. exxos

    exxos Guest

    Hi all,

    Has anyone got any idea for high speed switching for power mosfets ? a
    typical mosfet has like 3,000pf gate capacitance and my driver can just
    about cope with 1mhz, but 2mhz my drive wave appears like a sawtooth wave,
    so the mosfets never really hit fully on or so, so they heat up like hell...
    Theres some small info on using a class C and class E design though I dont
    have any experiance in these, I think the class c design is for ham radio
    users driving up into the 10mhz range...

    If anyone can suggest something to look into then this would help me out...

    thanks,
    chris
     
  2. John Fields

    John Fields Guest

     
  3. exxos

    exxos Guest

    wow, thats one sexy bit of kit! thanks,
    Chris



     
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