Indutor and capacitor selection for DC-DC convertor
Below is the buck regulator datasheet from Texas instruments, In this datasheet he has given the detailed explanation to calculate the inductor and capacitor value.
https://www.ti.com/lit/ds/slus973a/slus973a.pdf?ts=1599540205561&amp;ref_url=https%253A%252F%252Fwww.google.com%252F
Refer the page number: 20
or
https://www.ti.com/lit/an/slva477b/slva477b.pdf?ts=1601357038612&amp;ref_url=https%253A%252F%252Fwww.google.com%252F
I hope it helps