02-23-2024, 11:11 AM
(02-23-2024, 09:55 AM)feflo Wrote: @DRONE7 - i used the 1 and the same cable (of course - i am stupid, but not so much maybe :-)) - official Xiaomi 6A 1m cable (buyed from local brand dealer)...
@Nutul - i had attached to LPS an DAC together with RPis, but DACs power consuption is 1,5W (0,3A/5V), and (as i wrote) current required by both this devices together was 1,2A at peak (lab LPS is able to deliver 3A stable and without time restriction - even a passive cooler was heated up only to 40 deg. C after a couple of hours). I tried it with RPi alone too - same behavior.
With official RPi 3A SMPS was powerred RPi only.
Otherwise, i tried to set up voltage lower (previosly setuped to 5,2V) - into 5V and situation goes better (i suspect it will have something to do with the brown out detector in the firmware).
The strangest thing is that the same problem -"throttling situation" - was repeated with the rpi3, which basically has significantly lower power requirements.
Maybe there is some issue with lab LPS, but why official RPi 3A SMPS shows exactly the same behavior (without any other devices hooked up)?
Now i am powering RPi from 5A on 5V SMPS, but this is not a solution for me.
I will made another attempts.
Sorry, I don't want to bother you with this, but I would like to know the reason why this is happening.
Maybe you have a defective Pi PSU?
Try a replacement or new unit.
Most of my Pi's use the official 3A supply and never any throttling.
