LM63615-Q1: Equation 9 for Output capacitor

Hi Shinji,

I'm not particularly familiar with this equation, but basically it is a function of the crossover frequency that will give the maximum phase boost, the gain of the error amplifier & feedback network at that particular crossover frequency, and some relation between the pole of the inductor and output load. In general it is quite complicated, and it may be better to dive into some literature.

If you just want a quick and practical way to estimate a value, equation 12 should work.

https://www.ti.com/lit/an/slva477b/slva477b.pdf?ts=1709062704297&ref_url=https%253A%252F%252Fwww.google.com%252F

Thanks,

Richard

Hi Shinji,

Load-step is usually selected or specified in the design. 

Usually you can start with 50% of the maximum output current.

Thanks,

Richard