nRF52832 current consumption in sleep mode

RE: nRF52832 current consumption in sleep mode

GALZ SL — Wed, 08 Dec 2021 06:15:18 GMT

Is it possible to identify this current on your device

RE: nRF52832 current consumption in sleep mode

Sigurd — Wed, 05 Apr 2017 11:12:46 GMT

I added your "main(void)" code to the ble_app_template project in SDK 12.2 and changed APP_ADV_INTERVAL to 480, and measured 58 µA with a Power Profiler Kit when advertising. What are you using to measure the current? It's not really possible to see that the current is 200 µA on the image you uploaded when the scale is in ampere [A].

RE: nRF52832 current consumption in sleep mode

Stanley — Wed, 05 Apr 2017 01:19:47 GMT

Hi,

The SDK version is 12.2.0 and I use the "ble_app_template" project.

I just remove some useless functions such as NRF_LOG_INIT, buttons_leds_init, peer_manager_init...etc.

Thanks.

RE: nRF52832 current consumption in sleep mode

Sigurd — Fri, 31 Mar 2017 11:01:12 GMT

It should be about 40-50 uA. What SDK version is this? What SDK example are you using for your code?

RE: nRF52832 current consumption in sleep mode

Stanley — Fri, 31 Mar 2017 09:42:41 GMT

Yes, I use the code posted in the question to measure the current.

I just want to know the power consumption of nRF52832, so I didn't connect anything to nRF52-DK.

The APP_ADV_INTERVAL is 480 (480*0.625=300), no problem.

Could you let me know the normal current?

Thanks.

RE: nRF52832 current consumption in sleep mode

Sigurd — Fri, 31 Mar 2017 08:55:18 GMT

Hi Stanley,

No, 200 µA seems too high for regular advertising with 300 ms interval. Is this measurement done with the code you posted in the question? Are you using logging over uart ? Have you connected something else to the nRF52-DK? This is APP_ADV_INTERVAL set to 480(=300ms) ?

RE: nRF52832 current consumption in sleep mode

Stanley — Fri, 31 Mar 2017 01:44:33 GMT

Hi Sigurd,

Could you please tell me the current in the circle of the following image?

We get 200 uA, is the value normal? (PA10040, 3V, DCDC Enable, Advertising 300 ms, Tx power 0dBm)

Thank you so much!

RE: nRF52832 current consumption in sleep mode

Sigurd — Thu, 30 Mar 2017 10:26:18 GMT

Yes, System On IDLE is 1.9 uA, but that is without any BLE activity. In the code you posted you are advertising, so this will increase the current and that's probably why you get 200 uA. There should be minimal with leakage on the DK.

RE: nRF52832 current consumption in sleep mode

Stanley — Thu, 30 Mar 2017 10:09:13 GMT

Hi Sigurd,

Thanks for your information.

I mean the SystemOn sleep.

The current 200 uA is the consumption of "SystemOn sleep", NOT including advertising current.

I have checked the "nRF52 Online Power Profiler", the "System On IDLE" is 1.9uA.

So, in normal case, the power consumption in SystemOn sleep is 1.9uA?

is there some leackage on the DK?

Thanks

RE: nRF52832 current consumption in sleep mode

Sigurd — Thu, 30 Mar 2017 09:22:32 GMT

Hi,

There is 2 types of sleep modes, SystemON sleep and SystemOFF sleep, you can read more about this here. If you are advertising or in a BLE connection with a central, you will be in SystemON mode between the BLE activity. We have a nRF52 Online Power Profiler here you should check out. Note that the current consumption is very influenced by the advertising/connection interval you have.