According to USB PD 2.0 spec, which is part of USB 3.1 standard, there's a 20V power rule. My question is - what is required to force a compliant USB Type C PSU to supply exactly 20V? Is it some resistor combination, or is there some IC required?
I am currently investigating the possibility of creating a converter which would allow powering 20V Thinkpads from 20V-capable USB Type C PSUs & power bankse - hence the question.
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Starlight5 Yes, I'm a cat. What else is there to say, really?
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Starlight5 Yes, I'm a cat. What else is there to say, really?
I know there's a bunch of engineers familiar with the subject hiding on this forum somewhere - please-please-please, throw me a bone - a link to IC I can use for voltage negotiation to 20V on the receiving end, or something like that - and I'll take it from there. Googling this stuff is such a pain. )'=
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John Ratsey Moderately inquisitive Super Moderator
This might help. I assume that there a chip which enables each device to be identified by whatever is at the other end of the cable.
If the Chinese haven't yet developed an adapter for your needs then someone may be working on it.
JohnStarlight5 likes this.
Engineering question about USB 3.1 20V Power Delivery
Discussion in 'Hardware Components and Aftermarket Upgrades' started by Starlight5, Aug 22, 2017.