derf21h ago
Enbies and Gentlequeers, may we present to you: the USB-C killer five thousand.

No power delivery, no negotiation, just 12V straight to VBUS

You surely wouldn't regret having a USB-C plug with 12V on VBUS around.
Show threadPavel Machek12h ago
@derf Can you actually do any USB killing with it? They should not be doing this, but any USB device should probably expect 20V on the input these days... and my guess is that many devices will tolerate 12V just ok.
Show threadArcane Roops

@pavel @derf I have various earbuds and small torches that have the Type-C plug, but when I connect them to a good PD supply via a monitor, they only ever get 5V.

I imagine that adding PD capability to a small low power device is not worth the cost :-)

4:51pmWeb
Show threadPavel Machek6h ago
@arcaneoverflow @derf Yeah, expected, and was not my point.
Show threadArcane Roops6h ago
@pavel @derf We seem to have different points. Some people reading may not realise it's a very bad idea to stuff the wrong voltage into the charging port, just because it looks the same (which has previously been the point with USB Type-C, after all). Earbuds and torches are the obvious examples, but although my laptop negotiates 20V, it also charges (very slowly, overnight) from a basic 5V supply. I wouldn't risk passing in 12V that hasn't been requested via PD :-)
Show threadPavel Machek4h ago
@arcaneoverflow @derf Yes, pretty clearly having a charger that simply provides 12V on USB is very bad idea. But also, if you are making an USB device, please make it 20V tolerant. Polyfuse or something. [And I believe at least some manufacturers are doing that.]