/diy/ - Do It Yourself

Anonymous Fri May 27 18:22:22 2022 No.2393612 [View]
File: 396 KB, 629x425, power oring.png [View same] [iqdb] [saucenao] [google]

I have a 12V DC plug as a power source in a system and I'm trying to integrate PoE by ORing the two power supplies. The presence of the DC jack shuts off the PoE controller via an optocoupler, but I need some sort of current blocking in point A to stop the PoE from shutting itself off and to prevent any current from flowing towards the DC jack. I can't use a Schottky due to current leak and a normal diode has too much of voltage drop. Is there an easy replacement for a diode here? I was thinking of using two back to back PMOS.

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/diy/ - Do It Yourself

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