Skip to main content

All Questions

0 votes
0 answers
72 views

USB 2.0 0.9A and Data (hub) Simultaneously

Trying to combine USB hub and higher-than-default USB charging currents. My experience with implementing USB is close to zero, although I usually have no problems with datasheets and other designs I ...
Ilya's user avatar
  • 3,613
1 vote
2 answers
915 views

Creating a USB charger from 2-wire DC [closed]

I'm trying to tackle a problem where I want to wall-mount a USB device on a brick wall that only has a single 2-wire (14AWG) cable available, and no room / capability to run a new cable or remove the ...
Dominik's user avatar
  • 119
0 votes
1 answer
177 views

Is a PD controller necessary if VBUS is always >5V?

I'm trying to implement a board that will use USB-C Power Delivery. We want to operate with 20V 5A input. If we know the source will always be at 20V, is it necessary to put a PD controller on the ...
VanGo's user avatar
  • 1,197
0 votes
2 answers
601 views

What are the limits for a USB PD charger and device to settle on a charging profile?

I've got a laptop which charges through USB Power Delivery. The charger supports the following profiles: 5V x 3A 9V x 3A 12V x 3A 15V x 3A 20V x 3.25A I know USB PD devices and chargers enumerate ...
marcv's user avatar
  • 101