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Old 07-12-2010, 07:29 PM   #3542 (permalink)
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The "typical" gate charge for 20 of those IGBTs would be about 2000nC. The revolt controller has a total typical gate charge of about 1600nC. Pretty close. I'm using a 12amp gate driver, but they also have a 14amp inverting driver that is a drop in replacement, but I think Digikey doesn't have any in stock. I would try going way smaller than 200 Ohms. Man, that's huge. I wonder why it was so big? I bet 30 Ohms would be fine.
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