There's also this:
http://www.digikey.com/Web%20Export/Supplier%20Content/Vishay_8026/PDF/VishaySiliconix_MOSFETBasics.pdf


>I wondered what is useful for to know the amount of gate charge in 
>MOSFET / IGBT (measured
>in Coulomb). One thing could be to deduce the capacitance of the gate, 
>but it's often (if
>not always) specified in the data sheet, so..
>
>Or how long it would take to the gate to develop a dangerous voltage 
>(device is destroyed):
>Volt = Coulomb / Farad
>
>Didn't look that useful either for this purpose.
>
>So, I found this on the Net and wanted to share it, as it was very 
>useful and informative:
>http://www.microsemi.com/micnotes/APT0103.pdf
>
>With kind regards,
>Mario

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