I am trying to understand Type1, 2 and 3 opamp compensators used in DCDC converters.(adsbygoogle = window.adsbygoogle || []).push({});

Type 1 is just an opamp integrator.

Type 2 has a C in feedback loop with parallel RC. How does this boost the phase Margin?

(page 307 - http://tinyurl.com/3qyt5dc)

I understand phase and gain margin when I look at the bode plots. But I don't get it when I am designing a ckt.

Also, how do I relate phase shift with phase margin.

For example, the inverting integrator output has -180 phase shift, but phase margin is -90 degrees. Is there a way to relate the two?

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# RC in opamp feedback loop

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