Radxa X4 External Power

#1

Hello,

I have ordered multiple Radxa X4 boards. I plan to connect a 4K 20fps camera to the board via the Ethernet port. Therefore, I assume PoE will not be usable.

Before the boards arrive, I want to order a suitable power supply. The board will be installed on a motorcycle, and although the power line provides 12V, I plan to use a relay in the system. To prevent possible damage from back EMF and other external factors, I intend to use the isolated galvanic power module shown below. This module fully isolates and re-regulates the motorcycle’s 12V power supply, outputting a clean 12V.

My question is: can I safely power the Radxa X4 with the following adapter? The adapter provides 40W (12V / 2.3A)

#2

This looks like OK, but you may need to consider the stability of the connection, heat dissipation, and the vibration.

#3

This galvanically isolated adapter provides sufficient current and power, and is industrial-grade, minimally affected by factors like vibration and heat.

If it is compatible, where and how should I connect it? As far as I see, the Radxa X4 has no dedicated external power port. To avoid damaging the GPIO pins, I will not supply power through them. Since the camera will be connected via Ethernet, I also cannot use POE.

So, where and how do I supply power to the board using this adapter?

#4

I mean to ensure good contact when connecting with X4, X4 generates a lot of heat and is only a consumer-grade product.
Connect the 2pin next to the type-c interface for power input

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1 Like
#5

Okay @ryann,
I will directly connect the output of the fully isolated 12V to 12V dc-dc converter module (whose link I shared above) to the two pins you specified on the Radxa X4 board.

Thank you.