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Forum: µC & Digital Electronics USB-C Pinout for power adapter


USB-C Pinout for power adapter
von UlrichMuc (Guest)

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The UCB-C plug of my power adaptor for Star LapTop notebook is broken.
I bougt a 65 W Lenovo power supply that works nicely, but I want to 
repair
the old one as a backup.
The old plug has got a cable with three wires: black for ground,
white for VBUs, blue for configuration.
I guess I need to connect the black wire to A1, A12, B12, and B1.
The white one to  A4, A9, B4, and B9.
The blue one to A5 and B5.
Now my questions:
Is this correct?
Do I need to add any resistors?

The only plug I found that provides access to the pins needed is shown 
in the picture attached.

Thanks for any advice,

ulrich

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Re: USB-C Pinout for power adapter
von Michael D. (mike0815)

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Ich habe die Pinbelegung gleich gefunden...

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Re: USB-C Pinout for power adapter
von Ulrich L. (ulrichmuc)

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"Ich habe die Pinbelegung gleich gefunden..."

Diese Antwort ist wenig hilfreich. Offenbar kenne ich die Pinbelegung.
Meine zweite Frage (Widerstand?)wird nicht beantwortet.

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Re: USB-C Pinout for power adapter
von Michael D. (mike0815)

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evtl. könnte dieser Beitrag weiterhelfen:
https://www.elektronik-kompendium.de/sites/com/2009021.htm

HEADLINE:
EMCA - Electronically Marked Cable Assembly

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Re: USB-C Pinout for power adapter
von MATHU Y. (mathuyaar76)

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Hello. That's not so easy. If you connect only VBUS and GND your laptop 
will (probably) not charge. That's because USB C can provide a wide 
range of voltages (from 5V to 20V, up to 100W iirc). To do so the host 
and the device negotiate the appropriate voltage through what's known as 
USB PD (power delivery). The Vbus starts at 5V and then the laptop asks 
for the most appropriate voltage (usually close to 20V). Several pins on 
the connector are involved in USB PD, so the easiest and safest way to 
restore your laptop is to solder another USB C connector. If your laptop 
comes with more than a USB C connector you can charge it via the 
other(s).

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Re: USB-C Pinout for power adapter
von Ulrich L. (ulrichmuc)

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@MATYU
You write:
   so the easiest and safest way to
   restore your laptop is to solder another USB C connector.

You misunderstood the problem. There is no problem at all with the 
laptop.

The problem is, that the USB-C plug of the power adaptor is broken and 
the question was, how to connect the three wires that go out of the 
power adaptor
to a new USB-C plug. Wired plugs, I have seen only with two wires.

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