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Tagged with phase-margin capacitance
2 questions
7
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1
answer
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How much of an impact do downstream MLCCs have on buck converter phase margin, and how do we mitigate those impacts?
I'm designing a board with a LMR14030-Q1 buck converter which takes 24V in and produces 5.25V out, which then feeds three LD39200 LDOs.
The buck schematic looks like this:
I used TI's WEBENCH tool to ...
- 11.1k
5
votes
2
answers
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I know it has small phase margin.. but why is it oscillating not at rails?
I came across an issue at my workplace with the following circuit. I did a OL response and saw that the gain margin is 21 db and the phase margin is 14 deg. Clearly not so good. Note that the 680nF ...
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