IGBT gate charging calculation

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Discussion in 'The Projects Forum' started by vwdevotee, Aug 1, 2009.

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  1. Aug 1, 2009 #1
    vwdevotee

    Thread Starter New Member

    Jul 19, 2009
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    I'm looking at gate driver chips right now, and I'm not sure if I'm forgetting somethign in looking at this. I want a 10kHz minimum switching frequency of the IGBT, and the IGBT I'm looking at has about (and by about I mean after VERY liberal rounding) a 1000nC gate charge at 15V. The gate driver chip has a maximum current of 1A at 15V, so I should be able to provide the charge needed by the gate in 1000ns or 1µs. Since 1µs is much smaller than the PWM period (100µs) I'm shooting for I should be good, right? Am I missing something here? Obviously I would love to have a charge time in femto- or attoseconds, but will microseconds work? Thanks!
     
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