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I am sorry, I have been busy. The numbers that I was given do not add up. If you give me the following information I can whip-up a design for you. What I need to know: High voltage rail voltage, Qg total of IBGT or IGBT part number, driver chip possibly a schematic, driver switching freq, what supply voltage is available to convert and isolate. The currents that I was told before are unrealistic. I have thought about the issue and will do a multiple channel flyback (quasi-regulated) with a pot core and fly leads for the isolation and it is hard to find small transformer bobbins with a lot of spread out pins.
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