Print Page - ESP32-POE: Deactivate POE?

Title: ESP32-POE: Deactivate POE?
Post by: charno on April 02, 2022, 02:29:23 PM

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

Title: Re: ESP32-POE: Deactivate POE?
Post by: LubOlimex on April 07, 2022, 03:04:19 PM

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.

Title: Re: ESP32-POE: Deactivate POE?
Post by: charno on April 13, 2022, 01:55:47 PM

Thanks for your answer!

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Microcontrollers => ESP32 => Topic started by: charno on April 02, 2022, 02:29:23 PM