power prfiler kit II maximum current error?

[thong]

The maximum current of my measuring board should be 8ma, but the maximum value measured by kit II is 24ma, and the average current of 100ua is correct,and the minimum value is also correct,I don't know how to Set Kit II?

[Simonr]

Hi

Can you export the .ppk file from the Power Profiler app and upload that in a .zip file here so I can review the power profiler trace? My initial guess is that these spikes are either noise from the USB or the level shifters on the PPK2 having trouble getting filtered out, in which case these spikes can be discarded, and in which case they won't have anything to say for the average current consumption. With the .ppk file I can confirm whether this is the case or not.

Best regards,

Simon

[thong]

Because I need to measure the maximum value of this equipmentPPK文件.zip

[Simonr]

Hi

Okay, so all/most of these spikes seem pretty similar, which makes me think it is not just the level shifters on the PPK2 struggling. Can you share some more information on what your application is doing exactly, and if you're measuring the current on a development kit or a custom board as well as how you have connected the PPK to your testing board?

Best regards,

Simon

[thong]

I measure the periodic broadcasting of ble Bluetooth. The broadcasting of ble is not so large. The connected Vout and GND pins supply power to my board，I use the current test tool of efm32 to test that the maximum value is normal, as shown ，the following figure, and the maximum value is less than 10mA

[Simonr]

Hi again

Okay, can you share some more info on how you've set up the Power Profiler Kit II? What resolution are you capturing the current consumption in, are you using the Ampere or Source meter mode, and how is it connected to your board exactly? Also, is your board a custom board or a DK or what? I assume you have already followed the PPK user guide to get it up and running doing measurements? 

Best regards,

Simon