Re: LTSpice model for a SiC MOSFET

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He does want it to be inexpensive. There doesn't seem to be any
specialised market where a few customers can afford to pay a lot of
money for a few devices, or if there is he hasn't mentioned it to me
(and probably wouldn't) if there was.

 
I can imagine some cheap approaches if something like 25% efficiency
were acceptable.

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I finally got a Pspice model for the IXTH02N450HV out of IXYS and - with
a bit of help from John May - got the part working in a simulation.
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I did managed to get 1mA out at 3.3V but I was drawing 12.5uA out of the
1kV source, so only about 30% efficiency. The two transistor are $US45
each, so it's not a cheap circuit. It only runs at 2.5kHz even with
pretty optimistic parallel capacitances for the high impedance windings.
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There a 40kHz ripple on the current drawn from the 1kV suuply at about
115uA peak to peak, so that may be where the extra current is being used up.