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Thingy91 has 600uA current consumption and nRF9160DK has 20uA for same firmware

Hello,

I'm doing some current measurements on both the Thingy91 and the nRF9160DK and I'm seeing some weird behaviours. My setup is as follows:

First measure on the nRF9160DK.

1. Upload the blinky example to the DK

2. Connect the Nordic power profiler kit II to the P22 of the DK and start the measurement. I'm seeing an average current consumption of 20uA

Then measure on the Thingy91.

1. Upload the blinky example to the Thingy91

2. Connect the Nordic power profiler kit II to the P1 of the Thingy91 (SB3 is cutted) and start the measurement. I'm seeing an average current consumption of 600uA.

 

Do you have any idea why there is this huge current consumption difference? I tried turning off the uart0 and uart1 in the Thingy but I still had 600uA of current consumption.

    // Turn off logging (which is using UART0):
    console = device_get_binding(DT_LABEL(DT_CHOSEN(zephyr_console)));
    pm_device_action_run(console, PM_DEVICE_ACTION_TURN_OFF);
    // Turn off UART1:
    uart1 = device_get_binding(DT_LABEL(DT_NODELABEL(uart1)));
    pm_device_action_run(uart1, PM_DEVICE_ACTION_TURN_OFF);

Thanks and best regards

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