Low Power consumption for nRF52 series of devices

[ujur007]

I was looking for different power options for nRF52/53 series of devices and possible want more information on how to reduce power such that device can run for months on a battery.

There was one interesting thread which discuss this for nRF51 series of devices. But that one is quite old (over 9 years now). So can someone from Nordic guide on this how to reduce power consumption of the device and individual blocks of SoC?

https://devzone.nordicsemi.com/f/nordic-q-a/1657/how-to-minimize-current-consumption-for-ble-application-on-nrf51822

Note: I have selected some tags to address topic for power consumption discussion.

[Jared]

Hi,

What is flashed to the network core? Have you checked if logging is disabled for the network core?

regards

Jared 

[ujur007]

Hi, It is single core. nRF52840. not nRF5340.

I read that it can be disabled on nRF5340 on some article..

Do I need to do anything for power management API? I do not understand it well though.

[Jared]

Hi,

Sorry, I missed that from your newest reply, 

What other peripherals are you using?

If you flash the ble_app_power_profiling app, what current consumption do you measure?

regards

Jared

[ujur007]

Hi, I just want to use GPIO0 and GPIO1, nothing more. So I have "disabled" most of the peripherals.

For the example you have mentioned, I did not have it in my version of nRF connect SDK but then I cloned the sample's repo and found that initially, the current measurement is around ~580uAmps and later around ~20uAms. 

I do measure the same ~20/24uAmps values with my example. 

Does this seem okay?  Or more current reduction is possible?

[Jared]

Hi there,

Can you share a pre-compiled hex of your application?

I want to flash it to my nRF52840 DK,

regards

Jared