October 08, 2024, 12:38:54 PM

ESP32-POE: Deactivate POE?

Started by charno, April 02, 2022, 02:29:23 PM

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charno

Hi,

For a Project I'm powering the ESP32-POE (Rev. i) with external 5V supply (not by USB but on the 5V PIN). Since I need Ethernet I think it's necessary to disable POE functionality to prevent damage if someone plugs the board into a POE powered Ethernet port.

Questions:
- Is it correct that the board or the power supply will be damaged if 5V supply (on the 5V PIN) and POE power is applied at the same time?
- Is there an easy way (good to reach component, easy to cut trace) to deactivate POE?

Thanks in advance
Charno

LubOlimex

Is it correct that the board or the power supply will be damaged if 5V supply (on the 5V PIN) and POE power is applied at the same time?

- Yes, quite likely and I would not recommend. Consider ESP32-POE-ISO instead, if you need such connection.

Is there an easy way (good to reach component, easy to cut trace) to deactivate POE?

- No. 50V+ are not a joke. You can deactivate it via software means at your network equipment.
Technical support and documentation manager at Olimex

charno