It is definately interesting, been looking at the
UC3855BDW datasheet and example circuit, though I don't know how they found their way to a APT5020BN or mtp8n50e mosfet, makes me thing mouser/digikey might be inadequate
Thing is, with that
spreadsheet and cores I had to tone down the frequency from 100khz to 50khz to keep the temperature rise within limits (AC losses went up unless you lowered the inductance value from the already low 17uf, it appeared to stay in continuous mode at that power level though, ~%30 ripple). Is discontinuous mode a requirement for ZVS (would kinda make sense)? edit, or something like an old-school scr shutoff?
Also, as you noted, that example is PFC, so a relatively constant supply *might* not need be as complicated a circuit.
@paul, the ch-200 appears to stay continuous down to about 2khz, but major current ripple. 10k is about the min.