Power consumption of the custom board (nRF9160 SICA)

[_dev_]

Hi,

I have a custom board based on the nRF9160 SICA SIP, using only NB-IoT with a lock on a single frequency. GPS is disabled, and there are other peripherals connected via GPIOs, etc.

Everything works well – the CPU goes into PSM mode, and the modem utilises eDRX.

The lowest power consumption I’ve measured is 65µA in idle mode.

I'm using PPK2 in Source mode to measure the consumption.

Is it possible that I’m leaking current somewhere, or is 65µA the lowest achievable value for my setup?

Thanks

[Maria Gilje]

Hello,

In case you are not familiar, you can use the Online Power Profiler to estimate how much power your SiP should draw based on different settings.

The lowest power consumption I’ve measured is 65µA in idle mode.

Depending on your settings, this could be expected or too much, but let me know what the estimate from the OPP is before we draw any conclusions.

Is it possible that I’m leaking current somewhere, or is 65µA the lowest achievable value for my setup?

If you haven't already sent in your hardware files for us to review and if you suspect that the power draw could be because of hardware issues, please create a private ticket with your hardware files so one of our hardware engineers can do a review.

Best regards,

Maria

[_dev_]

Hi Maria,

Thanks for the reply.

As per the Online Power Profiler the floor current must be around 2uA...

I will try to find the problem on my board.