Questions tagged [usb-c]

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pass-through Thunderbolt KVM Switch

I can not find a true pass-through KVM Switch for USB-C (Thunderbolt) to buy. So I am thinking about maybe building one myself. Currently I am just plugging and unplugging the Thunderbolt (USB-C) ...
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1answer
35 views

Charge a laptop without explicit USB PD capability using USB PD

I bought a new laptop, the Xidu Tour Pro. It came with a quite bulky 19V 2.1A power supply that I'd like to replace. One review at a respectable site claims that the computer charges just fine through ...
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37 views

Why USB-C Power Delivery charger and USB-IF cable is not charging the phone? [closed]

I have a USB-C charger with Power Delivery specification (it can charge 5/9/12/15V==3A and 20V==4.35A). Not sure if this is Power Delivery 2.0 or 3.0. I'm using a USB-IF Certified cable, up to 100W (...
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2answers
101 views

How do I solder a ~20-pin USBc connector near heat-sensitive components?

I currently have an LG V20 and its charging port is deteriorating. Unfortunately, it is out of warranty and the best price that I can find to have it professionally repaired is US$60, which is about ...
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2answers
103 views

Why touchpad starts acting weird when connecting a cheap USB-C charger?

I recently bought a cheap USB-C power delivery charger and 2m USB-C cable for my Surface Go. When I connect it, everything seems to work fine, it charges at full speed, etc, but there's one weird ...
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1answer
64 views

Converting a USB C into a Y-split USB A for chaging

I'm looking to split a USB-C (female) into two USB-A (female as well), strictly for charging. Would it by any chance be possible for me to solder the four voltage connector pins from the USB-c to ...
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0answers
23 views

Diagnosing USB Power bank shut-off on load application

I'm trying to create a small bluetooth boombox-style speaker, but am having trouble powering the device from a USB battery bank. Fundamental Problem: The power bank "shuts off" as soon as the load is ...
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40 views

USB C 2 wire, how it works & Connector repair

I wanted to repair an usb cable from a charger which can output 3A max. So on my charger cable, I got 3 wires. I got another USB C cable which can support 3A (USB-A to USB-C) and it only has 2 wires. ...
3
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1answer
217 views

What are the max. overmold dimensions for USB-C plugs?

In contrast to earlier USB specs, the USB-C specification doesn't seem to define a maximum width and height of the overmold part of the plug (according to figure 3.3, there is just a length defined). ...
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0answers
58 views

USB-C Connector wiring 3 wires

Hello, I am looking for a usb c connector suited for three wires. I can’t find them anywhere. The picture shows the broken connector from a 65w usb c charger. Can anyone tell me where I can get a ...
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0answers
44 views

Inside of Apple USB-C Charging Cable Layout

I wanted to connect Apple Macbook's 87W USB-C charger to a XT60 connector, which just needs ground - and power +. I'm guessing that the 3 reds are all powers thats why they are all together, the blue ...
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0answers
49 views

Requesting the maximum available power from source

I’m trying to design my own battery pack. I want to use usb-c as one of the inputs. The goal is to draw as much power from the usb-c port as the source supports and to feed that into a boost converter ...
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1answer
85 views

Schematic suggestions for a beginner

(From a complete beginner) I've had this idea to build my own keyboard from scratch for a while, and I finally got the time (and motivation) this winter break to go ahead and try it for myself. After ...
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1answer
75 views

USB Type-C Alternative with fewer signal wires [closed]

I love the new, sleek look of the USB Type-C connectors, and would like to use a connector with similar features in an upcoming project. The trouble is, I only need two signal lines, one additional ...
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2answers
91 views

Where can I look for USB 3.x superspeed mux chips for poor people that only have through-hole soldering tools?

I'm new to this realm of purchasing and I'm not exactly sure which of the different package names (SSOP, VQFN, etc.) are more friendly than others for basic through-hole soldering. I would also be ...
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0answers
47 views

USB-C Power Delivery Voltage Regulator

I don't have electrical engineering background, so please mind my ignorance on the subject. I'll try my best to describe my problem and question accurately. I have an e-cig (Sourin Edge) that has ...
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3answers
96 views

Getting a USB PD 3.0 port to output a constant voltage [duplicate]

I am trying to use this AC-DC wall adaptor as a simple constant voltage source to power a compact adjustable DC-DC converter. www.amazon.com/Charger-RAVPower-Adapter-Compatible-MacBook/dp/B07PLR7T1M ...
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0answers
64 views

How Does a Wall Plug Choose What Voltage to Supply? [duplicate]

I have a USB type-C phone (xaomi). It came with a usb 2.0 wall plug that basically states that it can supply 5, 9, or 12v at whatever current. When I plug in a micro usb led torch in, it charges at ...
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1answer
32 views

AT90USB1286 not detected by Windows Device Manger

I'm working on a controller for a USB-C keyboard. I understand USB is a very complicated protocol, and USB-C even more so, however luckily enough there's a ton of open-source projects that aim to ...
0
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1answer
52 views

Is this wiring between two USB-C connectors (receptacle) valid?

I am working on a small (hobby) device that does passthrough of USB-C connection (signals are untouched, only power/gnd are used in the device). To simplify assembly I put both receptacles on the top ...
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1answer
78 views

How does USB-C handle simultaneous data and video?

Some USB-C adapters offer a video output as well as a standard USB output. Such an adapter (for example with a USB port and a HDMI port) can handle simultaneous outputs: i can have video coming from ...
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3answers
90 views

USB - C connector purely for charging a battery

I'm looking for an ultra slim charging connector to attach to a li-ion battery pack. All I need are positive and negative pins. I have read that USB C supports up to 5A current. If I get a product ...
3
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2answers
205 views

How do usb-c connectors carry 100W at 20V without melting?

USB-c connectors are tiny. How is it possible for them to carry 100W at 20V without melting? I understand that power = VA and with V=20V then A only needs to be 5. But 5A through most tiny wires makes ...
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0answers
34 views

Charge USB-C device using magnetic connectors and 5V power supply (Nintendo Switch Pro Controllers)

I am attempting to build a charging dock for 4 Nintendo Switch Pro Controllers using magnetic connectors. I want the controllers to have "permanent" USB-C magnetic connectors in them for a fast (dis)...
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0answers
23 views

How do I design a circuit with overload and shortcircuit protection for a multi-usb type c powered hub only?

I am planning on getting a number of raspberry pi 4, for now we will say room for 5. They have usb type c connectors on them, and can receive 5v at 5 amps. Therefore the total amps is 5 ports * 5a ...
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1answer
73 views

How to charge a USB-C host with ACA alternative?

For old some micro usb devices, you can wire the ID pin so it is connected to the ground pin with a resistance of something like 36.5 kΩ. When the device is in host mode and connected to a device, ...
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0answers
13 views

Build 9V powerbank from a generic USB-C PD (or QC3) powerbank [duplicate]

I need to use a powerbank with device with these requirements: 9V, 500ma. New USB-C with PD feature can deliver higher voltages than standard 5V and 9V (upt to 2A) is one of these. As far as I know ...
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1answer
251 views

How do you determine the orientation of both ends of a USB-C cable from the UFP device?

As the heading states, I would like to semi-passively detect the orientation of both ends of a USB-C connection. I understand that it is possible for the UFP and DFP devices to infer their own plug ...
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1answer
39 views

usb 3 SS cable type to IP64 panel connector

I am designing an industrial equipment on which a USB 3.0 connection is required (for speed reasons). The electronics being in an IP64 box, I am forced to transfer the USB-C/3.0 connector to a panel ...
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1answer
63 views

USB type c receptacle plug in detection

How does usb device with type-c receptacle detects, that plug (just bare usb type-c plug, without cable, and resistors) is attached? Does USB specification describe this possibility? I know, that my ...
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3answers
239 views

Got an electric shock from a USB type C cable plugged to a laptop, how can I find the faulty thing? [closed]

I was about to charge my phone with the USB type C cable that was plugged to my laptop. When I grabbed the cable I got a light electric shock (I think I touched the plastic case that covers the metal ...
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0answers
130 views

What PCB thickness is this USB connector targeted for?

The following USB Type C connector has lead lengths of 1.6 mm: https://adam-tech.com/downloader.php?p=USB-C31-S-RA-CS1A-BK-SS-TR.pdf What's a good PCB thickness for this connector? Also, why are ...
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0answers
43 views

USB C device termination without controller

I was wondering about a minimal device (sink) design with USB C connector. In this case, where the device will only accept 5V and not further, I think a USB C controller is not mandatory. But I dont ...
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1answer
89 views

Why do new phones and tablets with a USB Type-C connector use a USB Type-A charger? [closed]

I have noticed that many relatively new phones and tablets with USB Type-C connectors (e.g., Nokia 6.1 or Samsung Galaxy Tab A T-590) are bundled with USB Type-A fast chargers (e.g., 12V, 1.5A) and a ...
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1answer
105 views

Where to wire usb shield output on breakout

Apologies if this is rather obvious but I am very much new to circuitry and most answers I have found are about designing new products. I have a USB Type C female receptacle that I would like to ...
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1answer
62 views

Is there a way to power a computer stick from my phone with OTG? [closed]

I need a compute stick like the Intel compute stick with me on the go. The way I will access it is just by doing SSH. I need a way to power it up, either by power bank or by my own phone via OTG, ...
0
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1answer
360 views

Wiring USB 2.0 to USB C Receptacle

I have a keyboard that uses a USB 2.0 cable to connect to the computer. I would like to remove the current USB 2.0 cable and replace it with a USB C receptacle. The goal is to be able to connect the ...
1
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1answer
80 views

Does USB-A connector have the pins required for USB power delivery (PD)?

I have looked at various USB power delivery (PD) adapters that supply a certain number of watts and are powered by 230V mains voltage. Always, they seem to have either a USB-C port or a full USB-C ...
0
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1answer
169 views

Does USB power delivery support arbitrary voltages?

I'm looking for a USB power delivery power adapter to charge my Canon EOS RP camera via its USB-C port. Canon sells its own adapter for insane prices, and the Canon adapter is apparently nothing but a ...
4
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1answer
991 views

Why would a USB-C adapter have a pull-up resistor?

I'm talking about a USB type-C male to USB type-A female adapter, the ones you need to connect a USB flash drive to the latest MacBooks. According to USB-C specification, this sort of adapter needs a ...
5
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1answer
198 views

Can USB Type-C 2.0 upstream (device) connect its CC pins and share a pull-down?

Since USB Type-C cables have only a single CC wire for detecting orientation (Microchip USB Type-C diagram: can an upstream (device) connect its CC1 and CC2 pins and share a single pull-down resistor?...
2
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1answer
131 views

How to use USB-C cable with a charger

Ill try to be as brief as possible. TL;DR: How to use my 3A 5V USB-C charger to power a dumb device that needs 5V 3A to run. My goal: I want to have a nightstand, that can charge 3 devices at the ...
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0answers
75 views

wiring diagram for USB-C to USB-mini cable

I want to create a cable that is USB-C on one end (from a Macbook Pro) and mini-USB on the other (to an external keyboard). Does anyone have a wiring diagram that could help? I read the question ...
7
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2answers
397 views

USB-C Connector: How to route signals

I'm having trouble understanding how to route the signals out of the Molex 1054500101 Type-C USB connector - specifically the B1-B12 pins. The distance between row A and row B is only 0.5mm, too ...
2
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2answers
187 views

USB Routing: Switching layers during routing

I'm working on a standard 4 layer board that involves USB 3.0. I have to route the SS TX/RX pairs as well as D+/D- pairs across a 2.8" PCB. I have found multiple calculators that provide me the ...
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1answer
120 views

USB-C UFP CC configuration: What Rd resistor value i need to use to be able to draw up to 3A?

Basically I want to add usb-c ports to my projects so i can use them to draw power. From what i understand i need to put 2 5.1kOhm resistors between CC1/CC2 and ground. Would this allow the consumer ...
1
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1answer
31 views

Do all USB-C compatible devices have USB hubs inside of them?

Since the signals on the USB-C connector are mirrored on each side with the CC pins indicating the plug orientation, does this mean that all USB-C devices have USB hubs so they can use the right D+/D- ...
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0answers
64 views

USB-C splitter design

I am trying to design a female USB-C to micro-B male/USB-C male cable. I only need 5V 3A at the male ends. I had someone propose this design, which essentially terminates the CC lines at the female ...
2
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2answers
60 views

Which way does power flow on USB type-c if CC1 and CC2 are not connected?

I got my hands on some USB type-c Male connectors, but when I tore one apart I saw that there is no pin on CC1 or CC2 and thus no pull-up or pull-down. After doing some research I'm not sure I know if ...
0
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1answer
83 views

Battery charging over USB-C (using USB-PD?)

I'm designing my first PCB, a wireless Keypad/Macropad with a battery. I'm probably going to be using a 2Ah Li-Ion battery because there will be a lot of LEDs on it and I just want it to last longer ...