7 ms·
> There are two cases where I would recommend caution: > 1. If you have a lot of devices powered off a single rail, placing lots of high-value decoupling capac
by timerol 2y ago
> There are two cases where I would recommend caution:
> 1. If you have a lot of devices powered off a single rail, placing lots of high-value decoupling capacitors will add up, so pay attention to inrush current. If you’re sticking 10uF decoupling caps on 20 devices then that’s 200uF. Maybe dial it back a smidge.
The conclusion of the article specifically mentions inrush concerns as one of the reasons to use large values. For the notch itself, relying on the difference between 0.05 Ohm and 0.02 Ohm decoupling is gonna make for a bad time, especially given how much that notch will move across DC bias and temperature.