jutek
Full Member level 4
ldo's Cout
hello
do you know if/how output capacity influences pass device's gain??
the second pole is fp2 = 1/ (Rpar*Ceff) where:
Cgd_miller = Cgd*(gm_pass)*(ro_pass || (R1+R2) || RL)
Ceff= Cgd_miller + Cgs
unfortunately fp2 changes with cout change. i know the first pole does it, and also it depends on iout current. i also know i didn't mixed it up.
fp's location changes aren't so muchas fp1 dominant pole, but it exist, and i can see that in the simulation.
regards
hello
do you know if/how output capacity influences pass device's gain??
the second pole is fp2 = 1/ (Rpar*Ceff) where:
Cgd_miller = Cgd*(gm_pass)*(ro_pass || (R1+R2) || RL)
Ceff= Cgd_miller + Cgs
unfortunately fp2 changes with cout change. i know the first pole does it, and also it depends on iout current. i also know i didn't mixed it up.
fp's location changes aren't so muchas fp1 dominant pole, but it exist, and i can see that in the simulation.
regards