IGBT gate charging calculation

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

  1. vwdevotee

    Thread Starter New Member

    Jul 19, 2009
    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!