nRF5340 Power measurement-reg

[Yazhini]

Hi,

In our new project, we are using the nRF5340 WLCSP package and configuring the system ON - low-power mode in our application code.
We measured the current consumption of the controller in an idle state of the system ON - low-power mode by controlling all the GPIO pins before going to an idle state and disconnecting all the external peripherals, only supply is given to the controller but it consumes 3mA current. Our device is battery-operated, so we should achieve a current below 100uA in an idle state. Could you please help us to achieve the expected current and suggest an idea to solve this issue?

Thanks,
Yazhini V

[Priyanka]

Hi,

Please make sure that all your GPIOs are in a known state, i.e. without leaving anything in the floating state as this can contribute to power consumption.

Also ensure that all unnecessary peripherals are disabled. 

Retaining any memory blocks can also cause unnecessary current consumption.

In case you are using the LDO, this can also cause a bit more current draw than the DC-DC converters.

If you still suspect something, you can use our power profiler kit or even verify with the online power profiler.

Regards,

Priyanka