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RE: Bulk Order 15kW SSTC Boards
Original poster: jimmy hynes <chunkyboy86-at-yahoo-dot-com>
The IGBT is only slightly slower though. What about an IGBT like
HGTG30N60A4D? That one's rise +
fall time is shorter, but has a little more delay. It seems like the
difference in switching speed
--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "Mccauley, Daniel H" <daniel.h.mccauley-at-lmco-dot-com>
> IGBT's are still slow devices. Also, at 100kHz, you would typically
> only run this device at about 5-8A current.
> Even so, even though I may build a coil to run at 100kHz (which is a
> relatively big coil for a SSTC), others might
> want to run at 300kHz etc...
> I'm no longer building the 15kW boards due to lack of orders and minimum
> quantities etc..., but am about completed
> the redesign of the PlasmaSonic II SSTC which is designed for up to
> > Hi Dan,
> > Why are you going to use IXFN44N50 MOSFETs? They cost $17.42
> > each, while a
> > IRG4PF50W IGBT costs
> > $4.43 from the same place. The IGBT is rated for 900 volts
> > instead of 500,
> > 51 amps instead of 44,
> > and also has less gate capacitance.
> > They do take about 100ns (40%)longer to switch, but if you're
> > going to make
> > a big coil the
> > frequency should be down anyway, right?