NRF52832 advertising current too high

RE: NRF52832 advertising current too high

Kenneth — Tue, 22 Sep 2020 07:35:55 GMT

[quote user="devotronix"]Any ideas short of buying an oscilloscope?[/quote]

Sorry no, there are also other more expensive power analyzers from third party such as Agilent. But these are typically more expensive than an oscilloscope.

RE: NRF52832 advertising current too high

devotronix — Mon, 21 Sep 2020 13:04:07 GMT

I don't think I damaged my PPK. I just tried with a different board and received more expected results. Here is what I've tried. I have 3 boards I'm testing, I changed the TX power to 4dbM:

1. nRF52832 - average 80 uA, peak 39 mA

2. TI TLV61225 - average 9 uA

3. nRF52832 + TLV61225 (voltage input 3V) - average 33 uA, peak 10mA

4. nRF52832 + TLV61225 (voltage input 2.4V) - average 44 uA, peak 16mA

It's possible the board that I removed the boost converter from has a damaged bluetooth chip, which could explain why the board with the boost converter looks fine. What I REALLY want to do is test the board with both the nRF52832 and the TLV61225 together with a voltage range from 0.8 to 1.3 volts. However, the lowest input voltage the PPK will let me use is 2.1 V. Anything below that and the power profiler app starts wigging out. Any ideas how I could go about testing the lower voltage range? I don't have an oscilloscope, just a Fluke 87V, which doesn't agree too well with the PPK. For case 3 it gives an average current of 21 uA, and case 4 an average current of about 80 uA, and then about 120 uA at 1.4 V. Any ideas short of buying an oscilloscope?

RE: NRF52832 advertising current too high

Kenneth — Mon, 21 Sep 2020 11:15:24 GMT

I think you may have damaged your PPK, you may check out this thread for some debug steps:

https://devzone.nordicsemi.com/f/nordic-q-a/41088/ppk-gives-wrong-value

https://devzone.nordicsemi.com/f/nordic-q-a/47560/power-profiler-kit-gives-wrong-current-measurments