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despite it's resemblance to a certain motor controller, at the multi-hundred dollar price point it is probably worth revisiting multiple high voltage mosfets @100khz, perhaps each with its own inductor and diode but one significant gate driver (or interleaved for $$). But getting the switches/inductors down to the 60 amp range could be good for costs.
Also it seems like litz would need a certain length to be effective, don't know, but plain old 28 strands of 26 gauge seems doable on a nailboard.
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