USB-PD can be used for more than just charging. If you’re running something (a headphone amp for example) from one port of a multi-port brick, you don’t want it to stop momentarily every time you plug or unplug one of the other ports.
Comment on USB-PD is a de-facto low-power DC voltage standard, with USB-C being the universal plug. Hurray!
Tangent5280@lemmy.world 5 months agoIs there any disadvantage to this renegotiation? As far as I know, it happens to make sure the charging block doesnt burn your house down.
GreatBlueHeron@lemmy.ca 5 months ago
narc0tic_bird@lemm.ee 5 months ago
Yes, if the device isn’t battery powered. Think one-board computers or also docks (for example Steam Deck Dock). The Deck doesn’t turn off, but the dock switches to being powered by the Steam Deck momentarily, which resets its ports as well (display and network disconnects briefly).
Toes@ani.social 5 months ago
The biggest problem is that devices that aren’t battery powered will reboot.
Ideally you would have each port on its own isolated bus.
lolcatnip@reddthat.com 5 months ago
I suspect a most people call power bricks “chargers” and forget there are non-battery-powered devices that they can power.