PPK2 scope of usage

RE: PPK2 scope of usage

Simonr — Thu, 22 Sep 2022 12:53:14 GMT

Hi Vijay

That points to the PPK not being set up correctly or not working correctly. The picture is too small for me to see if the pins are connected correctly to your board. Is it connected as an Ampere-meter to the board? How are you powering the board your measuring on here? These spikes could be USB noise if it's powered over a USB. Can you also try connecting it as a source meter where you power the circuit you'd like to measure the current consumption over (if possible)?

Best regards,

Simon

RE: PPK2 scope of usage

elenva — Thu, 22 Sep 2022 07:21:32 GMT

Hi Simon,

1. They are all having same peaks.

2. Ampere mode.

3. Attached connection settings. seems correct connections.

Regards,

Vijay

RE: PPK2 scope of usage

Simonr — Thu, 22 Sep 2022 05:57:36 GMT

Hi Vijay

In this last snapshot it seems like the peak currents are all the same. Can you zoom in on multiple peaks and confirm or not whether all peaks are 716.80µA or not? If so, that points to the PPK not being set up correctly or not working correctly. Are you running it in Source Meter mode or Ampere Meter mode here, and how is it connected to the board you're measuring on?

Best regards,

Simon

RE: PPK2 scope of usage

elenva — Wed, 21 Sep 2022 15:42:50 GMT

Hi Simon, Can you help comment/analyse the power consumption of the two snapshots. The peaks are nearly same in both cases, but the lines are more densely/frequently occurring in one than the other.

Kind Regards,

Vijay

RE: PPK2 scope of usage

Simonr — Thu, 30 Jun 2022 07:32:13 GMT

These screenshots show an average current consumption of 0.4-0.5uA. What do you mean by 800uA exactly? The peak currents are measured to ~720uA which I guess is the SnapDragon doing some processing. I don't think your device or PPK is operating incorrectly.

Best regards,

Simon

RE: PPK2 scope of usage

elenva — Wed, 29 Jun 2022 06:54:29 GMT

this is current consumption with application running

The development board used is SnapDragon by QCOM (APQ8094)

RE: PPK2 scope of usage

elenva — Wed, 29 Jun 2022 06:53:35 GMT

RE: PPK2 scope of usage

elenva — Wed, 29 Jun 2022 06:50:12 GMT

the above is for idle state current consumption.

RE: PPK2 scope of usage

elenva — Wed, 29 Jun 2022 06:49:13 GMT

RE: PPK2 scope of usage

Simonr — Tue, 28 Jun 2022 05:28:11 GMT

Hi again

Unfortunately I don't see an attached screenshot, so it doesn't seem like it was uploaded correctly. Did you use the Insert > Image/Video/File button in the reply box? Please upload both a screenshot of the power profiler app and how it is connected to your board.

Best regards,

Simon

RE: PPK2 scope of usage

elenva — Mon, 27 Jun 2022 09:03:45 GMT

Hi Simon,

Yes, i've followed the instructions manual. idle state is reporting less than 10 microamps.

application usage shows around 800 microamps always.

Attached snapshot.

RE: PPK2 scope of usage

Simonr — Mon, 27 Jun 2022 08:05:39 GMT

Hi Vijay

Have you read and followed the PPK2 user guide and made sure you have connected the board you are measuring on correctly? Can you show me a snippet of the power profiler trace where you see the 800µA and maybe how your device is connected to your development kit? What development board specifically is it connected to?

Best regards,

Simon

RE: PPK2 scope of usage

elenva — Mon, 20 Jun 2022 07:00:22 GMT

Hi Simon,

Im able to use PPK2 kit connected to another development board and measure current consumption.

When idle, it's reposrting few micro amps.

When I run an application, it always shows 800 micro amps, irrespective of the application running.

For compute simpler decoder it shows 800 micro amps, and compute intensive encoder also it shows 800

micro amps.

Could you help here.

Vijay

RE: PPK2 scope of usage

Simonr — Mon, 07 Feb 2022 14:38:55 GMT

Hi Vijay

Indeed, the PPK2 is able to measure current on any external board (custom designs, nRF52 DKs, you name it) that is inside its specifications (It measures current from 500nA to 1A), and can give a detailed picture of the current profile for the user application.

Best regards,

Simon