MOSFET switching times due to dynamic gate current
Hmmm. My math doesn't agree with AoE. Assume that the MOSFET gate is a lumped, constant capacitance of 200pF. For a capacitor,
\$i = C\dfrac{dV}{dt}\$
so
\$\dfrac{dV}{dt} = \dfrac{i}{C}\$
If the current is 1mA then \$\dfrac{dV}{dt}\$ is \$5 \text{V}/\mu\text{s}\$, so it would take \$2 \mu\text{s}\$ to switch the gate voltage by 10V.
Maybe I am missing some context?