I have used pi filters in the past with the USB powers and it worked great. This time I need the pi filters to smooth out the 24V supply from a regular SMPS power adapter.
There is a load switch/fuse for safety and some current limiting, but I'm not sure if I need to place the pi filters before or after the load switch. Below is my thoughts on the placements, but I really can't decide which one is better. It's assumed that the adapter has large switching noises.
Supply -> Pi Filter -> Load Switch
This placement can filter out noises from the supply and pass it to the load switch, but I think in case of a high transient current drain, currents can be limited by the load switch. Maybe a simple capacitor after the load switch can handle this issue?