The Raspberry Pi 5’s power requirements are ~25W (5V at 5A). https://www.raspberrypi.com/documentation/computers/raspberry-pi.html
I am trying to find a voltage regulator to convert 12V from a LiPo to power the RPi on a mobile robot. Has anyone used either of these with any success?
Just wanted to verify before I pulled the trigger on purchasing them. Thank you!
Hello.
Either of the regulators you linked to should be okay for powering a Raspberry Pi, although here is a link to the regulator that would be my first recommendation right now:
Its performance should be similar to the larger of the boards you linked to, but it is significantly smaller (1"×1" instead of 1.6"×0.8").
- Patrick
Oh great! Thanks 
HI
The Raspberry Pi 5 uses USB PD. So it is my understanding that the dc to dc converter requires a USB PD or the raspberry pi 5 will not negotiate the 5 amps and will limit itself to 3 amps with limited functions.
Is Pololu thinking about adding the USB PD negotiation to its DC to DC 5v 5 amp converter?
Thanks
Downken
Hello.
According to this forum thread on the Raspberry Pi website, it seems like the Raspberry Pi 5 has a config.txt entry that allows the USB to run at full power even when powering the Pi through its GPIO headers (which is probably the easiest method for powering it with one of our regulators). I suspect that probably makes the sort of thing you are looking for unnecessary, but if there are still other reasons you think something like that would be useful, I’d be interested to hear them.
- Patrick
Hi Patrick
Thanks for the response.
it is my understanding that the changes you mention only turn off the warnings. This can leave some connected devices running on low power.
Thanks
Looking at Raspberry Pi’s documentation, our impression is that the usb_max_current_enable setting actually changes the behavior of the USB current limiting, though it might be worth posting a question in the thread I linked to in my previous reply to confirm whether that is correct.
- Patrick
Hi Patrick
Thanks for that. I am still researching and need to actually try that out. I am waiting on a 5v 5A unit.
Thanks
