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Op-amp dominant pole compensation

sneha rayala

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What happens if you make the o/p pole of the opamp dominant? i.e., we have pole locations in case of miller compensation, let's say we have swapped poles, i.e., the o/p pole is dominant, and then comes the pole at o/p of the first stage, if both are still far apart with a 60-degree phase margin.

What are the pro's and cons?


I have studied in the case of LDO that if you make the o/p pole dominant, then that will have low impedance at o/p and so the better transient response, but I want to understand how and why. Please try to brief this...
 

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