I am not convinced there are many use cases that actually require the full 5A. With a couple of power hungry USB peripherals you might want 4A for decent performance.I agree. That's what I do now and have been for ages. It seems barking to convert from 12v DC to 240AC then to 5VDC to me. Apart from the losses is conversion; it just adds unnecessary complication. 12v DC to 5v DC is the way to go. I've found that the SEPIC devices are cheap, convenient and seem to work well.I think a better bet for non typical power setups (like in an RV or boat) is get a regulator that supplies a solid, well regulated 5V@5A and then set the appropriate software overrides, to get the max USB port current, if required. Does not really make sense to get an inverter and generate AC from the DC power system, only to convert it back to DC.
My point was that I don't know whether the existing SEPIC DC-DC voltage units that I'm using with earlier PIs are capable of delivering sufficient power for the Pi5 USB ports to operate at their maximum. They claim to be capable of 5A...but I've found in the past that they can sometimes be ...optimistically rated.
As I said...at some point, I intend to experiment a bit and I'll report back if I find anything that I think might be of interest to others.
I think to get to 5A you need to by pulling max currents from the USB ports and pinning the CPU.
Statistics: Posted by bjtheone — Wed Apr 17, 2024 4:41 pm