Electronics > Projects, Designs, and Technical Stuff

USB-C connector which supports VBUS and the two data pins?

(1/2) > >>

peter-h:
I've been reading about this and it is amazingly complicated. So many different versions. Also this https://www.eevblog.com/forum/projects/type-c-in-micro-usb-footprint-(female-connectors)/

I am looking at USB-C only because the connector can be found with through-hole lugs and is stronger than micro-USB.

Ignorantly, I got some of these:  https://www.mouser.co.uk/ProductDetail/538-217175-0001 whose DS shows this



But I now suspect this is no good and may be usable for power only. I have this from an ESP32 dev board which shows 10 pins



and a C319148 is this: https://www.lcsc.com/datasheet/lcsc_datasheet_2409141623_XKB-Connection-U262-161N-4BVC11_C319148.pdf

which has loads of pins, on a 0.5mm spacing.

Is the Mouser 6-pin one no good? It looks for data one needs A7 B7 A6 B6. It does look like one needs the C319148 after all. It is very cheap.

ajb:
Correct, those 6 pins only get you power.  There are 10/12-pin USB C connectors that will work for what you want.  Those will have the same 6 pins as your existing connector, as well as the two pairs of D+/D- pins (two because of the reversibility of the connector, they just get tied together external to the connector), and often SBU1/2 as well.  You need the CC pins and their attendant resistors to allow a USB C host port to detect the device, so the minimum for a proper USB2 power and data connection is 10 pins on most connectors -- 2x Vbus, 2x Gnd, 2x D+. 2x D-, and CC1/CC2 (there might be some connectors with the duplicated signals bonded internally to allow fewer external pins, but those are unusual as far as I've seen). 

thm_w:
Yes 10/12 pin as discussed often:
https://www.eevblog.com/forum/projects/hobbyist-soldering-of-usb-c-connectors/
https://www.eevblog.com/forum/beginners/usb-c/
https://www.eevblog.com/forum/projects/usb-c-connector-question/
https://www.eevblog.com/forum/beginners/are-there-6-pin-usb-c-sockets-with-d-d-lines-instead-of-cc1-and-cc2/

Lots on LCSC.
Says 16P but you can see there are a few pins joined together.

robzy:
For what its worth, when I had this issue recently I went with C2988369 / GT-USB-7010ASV.

LCSC had a bunch of them in stock, and KiCad already had a footprint for it.

It still has only 0.5mm pin spacing, unfortunately, but I used JLCPCB's assembly service to do it for me.

squadchannel:
To make it work with any USB-C charger, the CC pin is required at a minimum.
If there is no proper resistor on the CC pin, the USB-C charger (not USB-A) will not work because it detects the pull-down resistor hanging on the CC pin and turns the charger's VBUS output on and off.

This is not a major problem when using older USB-A type chargers with USB-AtoC cables, since VBUS is always supplied with 5V.

Because of the complexity of the USB-C power standard, it is common for various products to forget the CC pin resistor and not be able to charge with USB-C chargers. :palm:

Navigation

[0] Message Index

[#] Next page