Unnamed · 2020-05-22 19:33
Howdy. I came across a weird chinese multi-port charger and the USB-C head started to fail (the connection to the bifurcation was failing). I decided to dismantle the port and ended up with the port in the images.
How can I use this to convert something that is USB-A to USB-C with this? It doesn't have the standard PCB, just the resistors for charging.
Just another Random Lainon · 2020-05-22 23:20
It'll be easiest if you just need USB 2.0, you don't want to have to solder all the LVDS data pairs on that tiny thing. If you can get away with just the +5v, gnd, and standard data+ and data- that would be a lot less painful. It would be even easier if you don't have to use data at all, and only need it for charging.
The two wires already on there are the +5v and gnd connections. You could solder those to the +5 and gnd in a regular USB-A cable and that would work for standard charging. It probably won't be able to negotiate fast charging, since that needs a data cable to talk to the other side and determine how to up the voltage.
https://upload.wikimedia.org/wikipedia/commons/thumb/6/67/USB.svg/1920px-USB.svg.png
As you can see, the + and - are the outside pins on USB-A. The center ones are the old 2.0 data lines. If you wanna connect the 2.0 data lines, you'd have to track those down on that little pcb there.
Hagbard Celine · 2020-05-22 23:39
>>4557
tldr explain more about what your specific needs are
Nell · 2020-05-23 00:23
>>4557
Exactly I only need regular 2.0 data. Do I need some in-between component or can I solder those cables directly?
Yu-ichi · 2020-05-23 23:39
>>4560
I am pretty sure there is a usb 2.0 interface in the usb C pinout. The hardest part is probably gonna be the fact that those 2 wires are just power, so you are gonna have to solder to those tiny pins. Allthough, good chance that those resistors are connected to the right pins of the connector already, so I guess you might be able to use those as bigger pads to solder onto.
Agent Richard Gill · 2020-05-23 23:40
>>4567
Forgot image
Nemissa · 2020-05-23 23:54
>>4567
The little SMT components on there are bridged between the power bus (looks like the GND through those vias) and the plug detection pin. They are for identifying the cable for fast charging classification.
The 2.0 interface is the pins in the center. You're gonna have to solder, unfortunately.