MOSFET Gate Drive Impedance
Mosfet input capacitance
C
iss
=
pF
Mosfet input gate impedance
R
Giss
=
Ohm
Mosfet drive impedance
R
G
=
Ohm
Calculate t
r
& t
f
R
L
> > R
G
Rise time
t
r
=
ns
Fall time
t
f
=
ns
Reset form
Source:High frequency Switching Power Supplies, George Chryssis