NRF3540 chip current consumption

RE: NRF3540 chip current consumption

saeed mahvis — Tue, 08 Mar 2022 04:01:56 GMT

Actually by disabling serial Uart I could reduce the current consumption by 300 micro amperes. But

the power management procedure didn't work or I might have done some mistakes performing that.

RE: NRF3540 chip current consumption

Stian Røed Hafskjold — Mon, 07 Mar 2022 11:42:06 GMT

Hi Saeed,

Were you able to get the current consumption down using the instructions in the link you posted?

RE: NRF3540 chip current consumption

psychogenic — Tue, 22 Feb 2022 16:18:19 GMT

Oh, that's a good find, a very useful checklist--will be using it myself. Thanks!

RE: NRF3540 chip current consumption

saeed mahvis — Tue, 22 Feb 2022 04:40:29 GMT

I have found this link (https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/optimizing-power-on-nrf53-designs) in the DevZone.

It has some nice guidelines in this issue. I am trying to follow its instructions to reduce the current consumption on my board. I will inform

you incase of any sever problem.

RE: NRF3540 chip current consumption

psychogenic — Mon, 21 Feb 2022 01:49:19 GMT

Hi,

Not certain I can help, how you're getting such high current or what you're setup is. A few years back, I made it down to about 10uA on a custom board with an nRF9160 (which has an LTE modem) and a few running peripherals (like accelerometer).

To get there I had to turn off lots of things, including serial which can be pretty expensive even if just sitting there. Also, to get down into microamps, I had not only to turn this stuff off in my application, but also in mcuboot.

I don't know if you are using mcuboot, and it seems like you need the serial port--but assuming the problem is with the MCU and not some peripheral(s) on your board eating all this power, it may be that you need to turn on serial periodically if you want to lower levels in general.

You can see my original post about the details with the 9160.

Good luck!