Problems getting PSM mode with nRF9151-DK EVB.

RE: Problems getting PSM mode with nRF9151-DK EVB.

oscargomezf — Sat, 01 Feb 2025 20:05:05 GMT

Hi Achim (And Kenneth),

Thanks for your help. With these two extra lines, it worked perfectly:

# Power Profile Kit II Analisys

CONFIG_SERIAL=n
CONFIG_TFM_LOG_LEVEL_SILENCE=n

Now, I have a power consumption of around 4uA:

RE: Problems getting PSM mode with nRF9151-DK EVB.

Kenneth — Mon, 27 Jan 2025 12:44:31 GMT

Just adding to that, you can check out some guides and links here:
https://academy.nordicsemi.com/courses/cellular-iot-fundamentals/lessons/lesson-1-cellular-fundamentals/topic/lesson-1-power-saving-techniques/
https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/test_and_optimize/optimizing/index.html

Kenneth

RE: Problems getting PSM mode with nRF9151-DK EVB.

Achim Kraus — Mon, 27 Jan 2025 06:50:40 GMT

Though you have a log via serial UART, I guess that's enabled. UART requires to sample the Rx, which drains round about that 500µA you see. You may search here in the forum to get more details. In general using the Power Manager to suspend the UART should help a lot.