The output filter pole is determined by the filter inductor and capacitor and is
a -40dB/decade rolloff. Its nominal corner frequency is
(3.58)
The zero caused by the output filter capacitor(s) (ESR is two 150mohms in
parallel) is
The intrinsic absolute gain of the power circuit at dc is
Locating the compensating poles and zeros of the error amplifier
I shall use a gain cross-over frequency of 15kHz, which is quite satisfactory for
the majority of applications. This yields a transient response time around
200mS.
f
xo
=15kHz
First one assumes that the final closed loop compensation network will have
a continuous ...
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