Other Parts Discussed in Thread: LMR33630
My customer E-LEAD is asking the question that they notice if follow TI SLVA477B to calculate Cout(min). the formula will be:
If follow the datasheet of LMR33630-Q1. the formula will be:
I would like to know what different between two formula. As I know that the first one is calculated by roughly Cout's ΔQ = C x ΔV = ΔI x T = 1/2 x T/2 x ΔiL/2 to get the answer C = ΔiL / (8 x fs x ΔVo). but I can't understand the second one how to get the K ripple factor. Would you please help to explain it? thanks.