Usb c pd controller ic's

[honest nimbus]

Hey guys, I'm looking for a usb c pd controller ic for multiple ports. I met a guy that puts together "smart boxes" (pelican cases) that go to places without much infrastructure so they can teach school with them. They contain 20 chromebooks and they charge from a battery in the case. Right now they have an inverter hooked up to power strips with chargers plugged into them and taped/zip tied into place. I was thinking about throwing together a pcb design for them to minimize dc-ac-dc conversion losses. And gives a little more room in the box. Does anyone know of a usb-c pd controller that can run 4 or more ports (preferably some multiple of 20)? I've found a couple that can control 2 at a time, but 4 or 5 would be ideal so I can cut down on space needed while spreading them out for cooling.

Thanks!

[spare shuttle]

You'll probably just need to use one IC for each pair of ports. Honestly an easier solution could be to take a bunch of 12v PD car chargers and hook them up to the battery (though it's not as clean or cool as a custom board).

a 20 port PD source IC with all the required buck controlling would be huge