I’m using a Beaglebone Green Wireless with a solid-state-relay which requires a 5 volt supply.
I’m trying to make the best choice for long-term longevity with the BBGW mounted in a remote location.
Is there any difference at all whether I use VDD_5V or SYS_5V?
From what I can determine in the documentation, SYS_5V is merely a switched version of VDD_5V which is passed through the power management IC
immediately after VDD_5V is applied.
So I think there is only a very tiny difference in the timing of SYS_5V coming up after applying 5 volts to the USB connector,
which in the case of the Beaglebone Greens is connected to VDD_5V.
If I have got the above correct, I don’t think it will make any difference whether I use VDD_5V or SYS_5V.
Also, the supply voltage never returns back to the Beaglebone from the solid-state-relay in normal operation.