I'm designing with TPS543B20 now.
The condition is
VIN : 12V
VOUT : 1V
Iout : 20A
I used WEBENCH that showed 10uFx3 Cin (GRM21BR61E106MA73L) but -82.6% @ 12V bias, then
the total substantial value was 1.74 x 3 = 5.22uF. It's very small from my experience.
And the estimated value of Vin p-p is 323.848mV, it's very big.
I changed range limit and part, then Vin p-p decreased to 52.124mV.
( became much smaller but still pretty big, I think)
I do not use ferrite bead on the way.
If you have any idea for Cin capacitor part and value, please teach me the part and pieces.
