> > Take a look at the effective gate capacitance of some large power FETs =
and
> > you will see why high end FET drivers are rated for 1A or more switchin=
g
> > current.

The two or three x bipolar jellybean gate driver that I mentioned can
provide about 1A of drive with transistors worth cents each.
Getting really high switching rates will require some additional glue
and special transistors for the very highest frequencies.
For use into the low MHz range (most smps aplications) very ordinary
parts may be used. For HF and VHF applications all but the more
entgused and capable may be advised to resort to existing driver ICs.


              Russell
--=20
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