nRF9160 Feather Power ORring

Ttguyen · 17 Jul

Hello,

I am trying to make sure my device supports power ORring (external voltage and USBC), and I wasn’t sure how to go about that given how I cannot place any diodes/other components on the Feather.

Would it be inadvisable to stick 5V into the exposed VBAT pin on the Feather while the USBC connector is plugged in?

Thanks!

jaredwolff · 17 Jul

Hi @tguyen

The PMO FET here acts like an ideal diode and disables input from VBAT if VBUS is enabled.

If you do want to supply power to the VBAT pin, make sure you solder JMP2 which is on the back of the board. Otherwise you may damage U5.