RE: current consumption is very high during sleep off mode in nrf52832

amey3 — Wed, 08 Sep 2021 10:27:08 GMT

Hello sir,

In systemoff mode i have reduced the current by using the function nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_RESET); by below 1ua but stuck in that function only. I have to again wakeup from shutdown process which function i have to used and in my customized ble logger i have used single button with gpio pin P0.13 .can you guide me how to solve these problem

RE: current consumption is very high during sleep off mode in nrf52832

Vidar Berg — Tue, 07 Sep 2021 08:38:11 GMT

Hi,

1) The CPU run current is ~7 mA if you don't use the DCDC regulator, so it seems like the system is not going to sleep for some reason.

2) 5.3 mA is the isolated RADIO run current, it does not include clock sources and CPU processing. You can use our online power profiler (https://devzone.nordicsemi.com/nordic/power/w/opp/2/online-power-profiler-for-ble) to get a better picture of what the total current consumption should be.

Here are some pre-compiled hex files you can use if you want to measure the System ON and OFF current on your board:

System ON

devzone.nordicsemi.com/.../system_5F00_on_5F00_LDO_5F00_regulatorpca10040.hex

System OFF

devzone.nordicsemi.com/.../system_5F00_off_5F00_pca10040.hex

Best regards,

Vidar