Multiple Regulator setup?
I wanted to use Carnetix regulators to power my many USB ports for my build, but I can't do 5v on both outputs so what I planned was 19v/5v for my PC & the front USB ports & 12v/5v for my screen & the rear ports. I was bummed to see the 1900 didn't do 12v/5v but the 2140 was mentioned as it can do 12v/5v .... but since the 5v is only 3 amps, would it be optimal to stick with the single 1900 at 19v/12v, and add on a P5V for a 3rd output, using a couple more for the back, if needed? I'd want to provide 1 amp to the exposed ports (for charging devices) as any connected device would be using hidden 500mA USB ports.
Thoughts? Possible reality check if I'm overstepping reason here.