In case you haven’t already found a DC-DC converter for 12v to 5v, here is one that I found and can confirm works for a Raspberry Pi5, which requires 5 Amps. I have not extensively tested this connector, however the Pi5 does boot and begin vision processing. To use this converter you will have to buy and solder a cable that fits into your Orange Pi5 to power it because the component only ends in a positive and negative cable. Something else to keep in mind is that your converter probably needs to be rated for below 12v. My team ran into issues with other converters cutting power to the component whenever the robot dropped below 12 volts. This happens lots when driving our robot around, but the converter I linked below has not shown any signs of such problems. The listing for the converter shows that the converter is rated for 8-40 volt input and outputs 12v at 5 Amps. Hope this helps!
Here is the link to the converter
Here is the link to the 5 Amp usb-c cable I used to power my Pi5
Please don’t hesitate to reach out with any questions!
8v minimum is getting into brownout range. How low of a voltage does this work to?
I believe the converter can drop to as low as 8 volts input without cutting power to the output device. However I have not extensively tested this component, and cannot guarantee that it works as the listing shows (with an 8-40 volt input range). But I have had no terribly obvious issues with this component so far. While robot batteries should produce around 12v, under load that number can drop lower, so I picked a component that should still supply power to my Raspberry Pi5 even when the robot voltage drops low. Generally speaking, if your robot is dropping under 8 volts from the PDP it’s probably time to change out your battery.
I should also mention that I have this component plugged into the PDP itself and NOT any of the VRM modules. This is because the VRM modules are not capable of supporting 5 Amps, while the PDP can do so.
Voltage of the main battery can regularly drop briefly below 8V during period of high acceleration. There’s a lot of 8V minimum regulators out there that I would avoid for this reason.