Deep sleep mode consumption of nrf52832

RE: Deep sleep mode consumption of nrf52832

yanli_1226 — Fri, 08 Mar 2019 02:10:27 GMT

thank you.

I only want to make sure if the pulse about 5mA is normal.

the deep sleep consumption need the board to be dealed with, it's done before.

RE: Deep sleep mode consumption of nrf52832

Stian Røed Hafskjold — Wed, 06 Mar 2019 12:06:39 GMT

If you get 32µA in system OFF mode, then you are either measuring the wrong value, or there are some other things on the board that are consuming current.

Are you measuring on a custom board or a development kit? If you have a custom board, please post the schematic and layout.

Also check that the current probe is showing the correct value. What does it show when it's not connected?

RE: Deep sleep mode consumption of nrf52832

yanli_1226 — Wed, 06 Mar 2019 10:10:23 GMT

I use a nrf52832 supplyed with the power of 3.3V, and without connected with other chip.

the ammeter is MSO-S 254A, Ammeter accuracy is 2mA. what esle do you mean by measurement setup?

the measurement is set to calculate the mean consumption of probe1, and probe1 if a current probe.

RE: Deep sleep mode consumption of nrf52832

Stian Røed Hafskjold — Tue, 05 Mar 2019 12:41:14 GMT

The pulse you are seeing every 39ms is the regulator operating in refresh mode. This is normal.

The current consumption including the pulse is < 1µA in system OFF mode.

From the plots it seems like you are getting a lot of noise in your measurements. Please describe your measurement setup.