Current peak on nRF52

RE: Current peak on nRF52

Stefan Birnir Sverrisson — Thu, 06 Oct 2016 15:19:44 GMT

Hi Victorien

nRF52 has internal power management system that enables the internal regulators dependent on how much power the on-chip peripherals need. The internal regulator is enabled to charge up a capacitor. When capacitor is charged up, the regulator is disabled to save power. The capacitor feeds the peripherals with power for a period of time until a minimum voltage level is reached, then the regulator is enabled again to charge up the capacitor. That is what I suspect you are seeing.

This is also explained on this thread.

RE: Current peak on nRF52

victorien — Thu, 06 Oct 2016 10:32:22 GMT

Sorry for the delay of my answer. The evaluation board that I use is the PCA10040

RE: Current peak on nRF52

Stefan Birnir Sverrisson — Thu, 25 Aug 2016 13:01:03 GMT

Hi Victorien

By evaluation board you mean the PCA10036 preview board? If that is the case, you should upgrade to PCA10040. The PCA10036 is obsolete.