nRF52832 high current proplem

RE: nRF52832 high current proplem

Susheel Nuguru — Fri, 10 Mar 2023 09:04:08 GMT

It depends on your custom board. For example on our nRF52832 DK we have few few solder bridge that we need to prepare to measure just the current of the chip and not the whole board as shown in this documentation. You probably have such test points on your board? If not you need to ask the hardware engineer who designed your custom board.

RE: nRF52832 high current proplem

cabin — Fri, 10 Mar 2023 00:56:56 GMT

Is there a separate way to measure nrf52 only? Or are you saying to remove the surrounding sensors and measure them?

Thank you

RE: nRF52832 high current proplem

Susheel Nuguru — Thu, 09 Mar 2023 11:19:45 GMT

I failed to see that your chip is using Systemoff. In that case CONSTLAT should not matter.

Have you measured the current usage only by the nRF chip and give me how much current it consumes in system off? You mentioned that 120uA is the current used by the whole board and this does not imply that nRF chip is using most of it.

RE: nRF52832 high current proplem

cabin — Thu, 09 Mar 2023 10:03:07 GMT

Current is still high.
NRF_POWER->TASKS_CONSTLAT = 1;

Are you referring to this setting? applied, but the current is high.
Is there any other way?

RE: nRF52832 high current proplem

Susheel Nuguru — Thu, 09 Mar 2023 08:09:56 GMT

I do not see anything in the SDK config that can affect this. The SDK version and or softdevice versions are not normally affecting the power consumption.

If you are comparing the power with our specified sleep currents, then you need to only measure the nRF chip power consumption and not the whole board power consumption (which includes external components).

When you measure only nRF chip current and still seem that it consumes high current, then check of you have CONSTLAT enabled in our power settings. this is not done in sdk_config.h file but done inside the application sources explicitly by application.

RE: nRF52832 high current proplem

cabin — Thu, 09 Mar 2023 00:46:15 GMT

Thank your reply

Unfortunately, I do not have a DK.
You are measuring the entire board. I just want to know if there is another way to set SDK version or softdevice version and what sdk_config.h settings affect the current.

RE: nRF52832 high current proplem

Susheel Nuguru — Wed, 08 Mar 2023 10:48:50 GMT

Could you reproduce this on our DK? If yes, then it should be a peripheral configuration issue. If you cannot reproduce this on our DK then it most likely seems like issue with your hardware.

Do you know if you are measuring only the current used by nRF chip or the whole board with external components?