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Estimating poles/zeros from visual circuit inspection

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thillygooth

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Hi, I was wondering if theres any trick or shortcuts to determining the dominate zeros and poles of certain feedback circuits without doing any of the math.

I've attached an example LDO circuit with the solutions given, from a TI app note (SLVA072). I can follow the math but still don't have an intuitive understanding of how it came out to what it did.

Can anyone help me out with this specific circuit, and possibly generalize the advice as much as possible? Thanks

Jeff

Screen Shot 2012-09-12 at 4.22.15 PM.pngScreen Shot 2012-09-12 at 4.22.37 PM.png
 

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