On Sun, 12 Jan 2014 08:35:18 -0700, Jim Thompson
wrote:

It appears the only valid data point for these power MOSFET's is the
"total gate charge", Qg. The capacitances listed are useless for
switch applications... their only value would appear to be if you were
designing an RF amplifier.

But here's the useful part...

Cgeffective = 2*Qg/Vg

This is the effective capacitance you must drive to reach your desired
Vg. (Caution, use the Qg graph, not anything in a table... Qg
increases with Vg.)

Even the schmuck-in-chief should find that useful :-}

...Jim Thompson

Not completely useless. Qg includes Cdg contribution; you'll note that
the initial drain voltage has to be specified, for Qg limits. The
plateau on Qg accumulation occurs at the gate switching threshold.....

RL