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Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
Ok, that about DEIC420's was just my fantasy..
Class E gatedriver can obivously beat UCC's at some level (especially if you want to go for 20Mhz +). Your current quadro-plasma audio system is cool enough already and UCC's seem to work very fine there.
Regarding IRFP450; he has 170nS total delay times and at 18Mhz one wave lasts 55ns
That's why I'm not sure if he can stand that ^^
Anyway, have good luck as experimental evidence is most prized thing.. :)
Registered Member #103
Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
Woh, how are you driving the UCCs at 18Mhz, I mean do you need some kind of resonant UCC drive at that frequency, or are they just connected to some TTL logic generating the 18Mhz?
I can understand that kind of frequency at class-E, but is UCC input capacitance an issue at 18Mhz?
class-E is looking good. I never would have guessed UCCs could do that, I thought they were old slow drivers. I think I'm going to have to get into the class-E thing, starting tomorrow...
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smaller coils (and a 12MHz target)
and UCC's seem to work very fine there.
