Thingy:91x power consumption.

[dm1]

Hi I’m looking for some advice on what may be drawing power from the thingy 91x.

I have measured the power consumption of the nrf91 the nRF 5340 and the nRF 7002 using the power profiler and the power breakout board supplied.

the usage reported for each component when swd and usb disconnected is a very low 30-40 uA for the nRF in idle, 0 for the nRF 7002 in disabled and, 3 - 4 uA for the nRF 5340.

However when measuring with an oti profiler providing power as if it were the battery then I am seeing a combined compunction of around 500uA.

My guess was this was some peripheral drawing power. So I tried Cutting the solder jumpers providing Vcc 5v to these but still had the same 500uA draw. 

Any Ideas as to what is drawing the power, and any way I can reduce or eliminate this.

Thanks

[dm1]

Usually when I’m having power issues it is the UART agreed. However I would expect that to show up on the breakout and it does seem to when interrupt mode is configured.  So not so sure this time. 

Thanks for reminding me I didn’t say what versions I was using the SDK is 3.2 and the tools are 3.1

I’ll take a look at those links too. Thanks.

[rajeev]

Currently your configs show that the serial/UART is enabled:

# # Disable serial logging to ensure minimum power draw
CONFIG_LOG=y
CONFIG_LOG_BACKEND_UART=y
CONFIG_SERIAL=y
CONFIG_CONSOLE=y

Just disable all.....