relation ship between phase margin and load transient respon

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ahmadiit

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transient reponse phase margin

hi all,
i need a mathematical relation ship between phase margin and load transient response of LDO.If anyone knows could you please post it .
thanks
 

mathematical relation ship between phase margin

ahmadiit said:
hi all,
i need a mathematical relation ship between phase margin and load transient response of LDO.If anyone knows could you please post it .
thanks
Click to expand...

If such a relationship exists in a closed mathematical form, it surely will depend on the order of the closed loop system.
I know that such a relationship exists for a pure second order system.
That means, there is only a limited application for LDOs.
It results in a graph showing the overshoot vs. phase argin and is given by Sergio Fanco (Book: Design with opamps and analog integrated circuits).
(The formulas are rather involved).
 

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