power switching

Building a networked device and want a dual power supply option. So, I’m working on a redundant power design based on Silvertel’s app note, using the AG9205 PoE module (+5v_POE on schematic below) and a Murata OKL-T/3-W12P-C 12V to 5V DC/DC converter. PoE should have priority: if both power...

Hi everyone, I am looking to switch between two 12V DC power supplies without having an actual “switch”. I’d like for 1st power supply to switch to the 2nd one when the 2nd one is turned on. I believe the current rating for the system is 12A. I’ve read about using ORing controllers, diodes...