RE: nRF53 low-power guidance

Chasen — Tue, 15 Oct 2024 17:06:34 GMT

Hello Kenneth,

Thank you for the quick reply and the resource. Thank you for the heads up on the supply voltages. The rest of the system is running at 3v3, I am just running the nrf53 directly from the battery so I can turn the rest of the system off. I will take a look at the power_general link you sent and see what I come up with.

Thank you again!

RE: nRF53 low-power guidance

Kenneth — Tue, 15 Oct 2024 11:12:24 GMT

Hello,

I suggest to check out: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/test_and_optimize/optimizing/power_general.html

To measure correctly power consumption you should power cycle the board to ensure it exit debug mode after programming.

I notice you refer to 4V several times, make sure that VDD is between 1.7-3.6V, as specified here:
https://docs.nordicsemi.com/bundle/ps_nrf5340/page/chapters/recommended_op_conditions/doc/recommended_op_conditions.html

If you are feeding voltage through VDDH, then the maximum is 5.5V in the above link.

The I/O pins voltage must not exceed VDD+0.3V (or max 3.9V if using VDDH).

Kenneth