Understanding how to get minimal current consumption on the nRF9160

RE: Understanding how to get minimal current consumption on the nRF9160

Hakon — Thu, 07 Nov 2024 12:58:12 GMT

Something to check is GPIO state. Check out https://devzone.nordicsemi.com/f/nordic-q-a/93731/custom-board-with-external-crystal-is-consuming-too-much-power-when-powered-down/395109 . Also, make sure the modem is powered off completely.

RE: Understanding how to get minimal current consumption on the nRF9160

WoutWG — Wed, 30 Oct 2024 11:49:59 GMT

Thanks Hakon, I can't believe I missed the post you referenced.

I totally overlooked the nRF5x reference in the sample description as I thought it referred to the nRF5 SDK and was some sort of port to Zephyr, but it makes sense that it refers to the hardware instead.

After following the referenced thread, I get to a consumption of around 8µA. Not quite the 1.4µA I was hoping for, but definitely way better. Do you have any idea what could explain the increase?

RE: Understanding how to get minimal current consumption on the nRF9160

Achim Kraus — Wed, 30 Oct 2024 08:54:59 GMT

See Low power empty project .

RE: Understanding how to get minimal current consumption on the nRF9160

Hakon — Tue, 29 Oct 2024 14:34:47 GMT

Hello,

[quote user=""]To try and get to these numbers, I started from the system_off sample.[/quote]

Why are you trying to run an nRF5x sample on an nRF9160 DK? I don't think that sample should work for nRF9160. If you want to actually put the device in system off you should set NRF_REGULATORS->SYSTEMOFF=1 as done here.