Quote:
Originally Posted by jackbauer
So I'm working on a new upgrade.... I'm having a bit of trouble driving the igbt. Its a rather dated fuji 1mbi600u4d 600a 1200v device and i'm running at 8khz for testing. Its suffering from sever miller effects at turn on. Using a ACNW3190-000E 5amp igbt driver opto and a single 15v dc supply.
The photos taken on the crt scope were across C-E via a differential probe.
Any advice or comments welcome.
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Hi Jack,
Are you using the recommended (by fuji) 1.1 ohm gate drive resistor?
If so, the peak current will be in the 13 amp range and that driver
will fall short at turn on. IXYS makes IXDN514 series that are rated
at 14 amps peak. You could also keep the driver you have and use it
to drive a FET that in turn drives the IGBT.
Remember to keep good film/tantalum caps in the gate drive supply side
in order to deliver the current needed to turn that IGBT on.
Cheers
Mark Weisheimer