[jandrese]

USB-C chargers do this all the time. People run notebook computers off of USB-C.

A quick Google search suggests they aren't hard to find:

https://www.walmart.com/ip/Type-C-Such-Phones-Charger-Charge...

[GeorgeHahn]

That doesn't fit the bill:

> Output voltage (four charging modes): PDO DC5.0V-3.0A or 9.0V-2.77A PPS 3.3-5.9V-3A or 3.3-11.0V-2.24A

5V output at 5A is pretty unusual.