The website https://wiki.radxa.com/Rockpi4/hardware/powersupply provides some information about power supply compatibility on Rock 4.
So we bought the PD power supply PD451A USB-C PD 45W that supports these outputs: 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/2.25A. Used USB-C cable is LogLink CUA0106 (USB-C 3.2 up to 100 W, 480 MBps data transfer).
The problem is when using this power supply our Rock 4B+ randomly reboots several times a day. We have several pieces of this power supply and it behaves the same for all of them. System is idle, CPU temp is below 40°C.
But when we connect the standard Raspberry Pi USB-C power supply (5V/3A) our Rock 4B+ runs without any reboot for the whole weekend, even under heavy load.
What can be the problem? Is there some important factor that we must take in account when selecting the correct power supply? Or is just Rock 4B+ unreliable board?