jefferson
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ynhe said:From NSC's application note,
Stable loops typically require a phase margin of >20° for LDO.
But I think you need keep some margin in design.
jefferson said:Hi, when designing an LDO,is 20° phase margin enough for the whole loop?
I know that a stable loop need 45°-60° phase margin,but it seams that it's not so easy to improve the phase margin.
Regards.
jefferson
ynhe said:Phase Margin for LDO and dc-dc from NSC.
A stable loop typically needs at least 20°of phase
margin for linear regulators and 40°-45°for switching regulators (more is better).
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