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am I missing something?
Hi Guys, not sure if I am missing something but what's the point in building your own DC-DC to drive IGBTs again? I mean these are $10 parts at digikey and such - all integrated, with +15/-15V outputs which a perfectly suitable for IGBT modules with +-20V gate drive limits... You can get a 2W version which is sufficient for driving a 400-600A module at up to 12-15kHz (there is no point in using anything higher than 10kHz anyway for a motor controller - you only end up multiplying switching losses). If that's not enough, for ~$25-30 you can get a 10-15W version which can drive an array of enough IGBTs to produce output currents that you shouldn't be trying to produce anyway ;-))
I'm not trying to be a pain but just trying to understand if I am missing some additional motivation...
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