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Re: Jimmy's DRSSTC 2
Original poster: "Jimmy Hynes" <JPHynes-at-gmail-dot-com>
Hey,
> >pulse rating on these IGBTs is 600A for 1ms, and the datasheet says the
> >pulse width is limited by junction temperature.
I didn't use that number for my calculations, I looked at the
transient thermal impedance charts on the datasheet. Those make it
look even better than your method.
> Does the mfr publish a thermal model for the device... Usually, they'll
> give you a 2 or 3 node model. Die mass: Theta jc: case mass: theta cs
Yeah, last charts on this pdf
http://www.ineltron.de/english/mitsubishi-data/IGBT/CM300DY-24H.pdf
> If you know these masses and thermal resistances, it's just like a cascaded
> RC network, and you can calculate the time constants.
That's pretty much what I did.