nrf9160DK PCA 10090 v 0.9.0 consuming extra current

RE: nrf9160DK PCA 10090 v 0.9.0 consuming extra current

Adeel — Fri, 20 Nov 2020 14:27:02 GMT

Hi Martin,

Okay, I will try it and let you know as soon as possible :).

Regards,

Adeel.

RE: nrf9160DK PCA 10090 v 0.9.0 consuming extra current

Martin Lesund — Fri, 20 Nov 2020 14:24:34 GMT

Please try my suggestion.
UDP sample from NCS 1.4.0

Also you need to run the latest modem firmware.

Let's get a correct base before looking into other issues.

RE: nrf9160DK PCA 10090 v 0.9.0 consuming extra current

Adeel — Fri, 20 Nov 2020 13:59:17 GMT

Hi Martin,

I tried to run the udp_with_psm_new example as well.

In any of the examples I run, the current never goes less than 13 mA.

I ran the MQTT_simple example as well. The modem_configure() took 50 mA of current which is fine , but the current only came back down after that to nearly 13 mA. This is relatively very high current.

I normally was hoping to have current values like you do but the current does not drop. My code runs but the least current value I get in PSM or deep sleep mode is 13-13.6 mA. This value is quite high and quite strange and I have no idea where it could come from.

Can you let me know what could be the causes for it.

Regards,

Adeel.

RE: nrf9160DK PCA 10090 v 0.9.0 consuming extra current

Martin Lesund — Fri, 20 Nov 2020 13:44:00 GMT

Hi Adeel,

Please flash the default UDP sample, put the VDD_IO switch to 3V and take the measurements.

You should be able to see the Modem going into PSM mode after the Network release the device from RRC Connected mode.
(This can take either a couple of seconds or e.g. 1 minute depending on the RRC inactivity timer that the network has set)

Here you can see from my testing the UDP sample:

Notice the RRC Inactivity timer of 1 minute before going into PSM.
Which has an avg. 2.7uA, since I am using the GEN2 version of nRF9160 SIP.

Best regards,
Martin L.