Questions tagged [usb-c]

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1answer
33 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
10 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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0answers
65 views

How to design a board that gets 12V supply from usb-c? [closed]

I am trying to create a board similar to the Radxa Rock pi 4 which is open source hardware. The device requires a lot of power so a regular 5V usb-c cable won't cut it, and the component it uses to ...
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0answers
38 views

Can I design a board that can charge a phone while it is powering a slave device via OTG? [closed]

I have a USB-C phone that is connected to a board which is then connected to a slave device. The phone is in host mode while it is connected to the other device and I can issue commands and receive ...
3
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1answer
214 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
36 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
61 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
104 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
90 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
42 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 ...
0
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1answer
88 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
63 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
50 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, ...
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1answer
136 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
47 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 ...
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1answer
70 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 ...
3
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1answer
216 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 ...
4
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1answer
89 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
80 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
48 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
234 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 ...
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2answers
98 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
58 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
24 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
57 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 ...
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2answers
47 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 ...
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1answer
65 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 ...
0
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1answer
59 views

Is a PD controller necessary if VBUS is always >5V?

I'm trying to implement a board that will use USB-C Power Delivery. We want to operate with 20V 5A input. If we know the source will always be at 20V, is it necessary to put a PD controller on the ...
1
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1answer
35 views

Can we convert two type of USB ports by simply re-mapping the pins?

So there's lots of different port (or plug) out there like USB type-c, micro USB etc. Where I'm curious to convert between those port is it just simply like re-mapping those pins to the correct ...
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3answers
134 views

USB Type C 3.1 PD to get DC20V output [duplicate]

I have a USB Type C notebook charger. I know it can supply 20V with 2.25A for my notebook. If I have a type-c breakout board, like this: https://www.ebay.com/itm/USB-3-1-Type-C-Female-to-Female-pass-...
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0answers
41 views

Power in USB C Cable

I'm trying to do a proof of concept using USB C where the Device 1 initially (upon plug in) receives power from Device 2 and powers on. Then Device 1 disconnects from the power coming from Device 2 ...
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1answer
48 views

Choosing usb-c earphones that are lossless? [closed]

I know the USB-C audio standard support multiple compression standards, some lossy, some lossless. Can i control this in software or hardware ? how can i choose earphones that will guarantee ...
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0answers
70 views

Adapt existing usb-2 otg device to usb-c but use usb-2 mode

there are number of articles out there, like this one: http://www.ti.com/lit/wp/slly017/slly017.pdf But I'm not super confident in my abilities here so I'm wondering if someone could proof my ...
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1answer
100 views

USB 2.0 cable to USB C output [closed]

I've got a Streamdeck that has a USB 2.0 out as a fixed cable. I've bought a USB C 2.0 board that I want to wire up so I don't have a fixed cable anymore. My issue is I don't know what the two black ...
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1answer
247 views

Can I cut off a USB C plug, and replace it with a USB C socket

I need a USB C (female) to USB 3.0 Micro B (male) cable. Unfortunately, I can only find a male - male cable. Is it possible to cut the USB C plug off, and solder the wires to something like this: Or ...
0
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1answer
68 views

USB-C - incorrect termination

The Wikipedia link quoted below refers to incorrect termination on USB-C cables. Please could you suggest a way (with basic equipment) to test a USB-C cable to see if the correct pullup has been used?...
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1answer
46 views

Current limit a bus-powered usb 3.1 hub

I'm currently designing a bus-powered usb 3.1 hub. It will use a USB-C for UFP and 3 USB-A downstream. The hub will only be acting as a sink. As of my understanding, since it may be connected to USB ...
0
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1answer
44 views

Thunderbolt 3 connecting to USB 3.1

I know that Thunderbolt 3 uses the USB Type-C port, and I know that you can plug a USB cable into a Thunderbolt port and it will function as USB or Thunderbolt depending on the peripheral. However, ...
2
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0answers
48 views

USB Type-C DRP Integrated Switch/Interface Chip

I would like to experiment with a power bank design with a single usb type-c port. The port should have dual role, source current for charging other devices as well as sink current for charging itself....
3
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1answer
346 views

USB C PD fast power role swap

I'm currently designing a device, which consists of a STM32 microcontroller with USB 2.0 support, USB 2.0 hub and few dimmable leds. STM is connected to the hub, along with few other devices. Hub is ...
3
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2answers
102 views

USB-C to 15V conversion

I need to be able to power a device that accepts 15V with a USB-C cable. The issue is not physical but the wiring. I know USB-C can deliver 15V. But how ? Do I simply need to wire the two wires to ...
1
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3answers
717 views

Direct connection of UART serial port to USB type-C

in my project I have a USB type-C 3.1 2nd Generation (24 pins), which should provide 5V to a charge battery/battery system. In addition, there is a uC powered at 3,3V where the maximum voltage on GPIO ...
0
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1answer
102 views

Stabilize circuit on 5V 2A

I have not yet build following circuit: Circuit in high performance needs 5V 1.7A (measured). I have source which is powerbank with 16 000 mAh. Outputting via ports: USB-C 5V/3A, USB-A 5V/3A, Micro-...
1
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1answer
117 views

Interpreting USB-C land pattern

I'm replacing USB Micro and USB B connectors on my PCBs for USB-C connectors, but only using USB 2.0. So I'm looking for a connector that isn't too complex to layout or hard to solder. I found this ...
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2answers
353 views

Component identification, between USB-C switch IC and connector

As the title really, can you identify this component? It's on a line connecting a USB-C switch IC (PI3USB30532) to the USB-C connector and I believe the line is for Display port functionality. How ...
0
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1answer
32 views

Replacing lightning connector with usb-c connector in lightning earphones [closed]

I have a lightning earphones, Sennheiser ambeo smart headset. https://en-us.sennheiser.com/finalstop The cables are yellowing, and I wanted to replace them, also I got tired of using this on my ...
2
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1answer
74 views

Low-Power over USB [closed]

I have a small custom 5V 2mA device which is powered over USB. To be specific, it will be powered over USB by connecting it to an Android smartphone or an iPhone. There is no data transfer. I ...
2
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1answer
167 views

Which pin of USB-C to use for analog signal?

I am working on a project which connects a microcontroller to an IR sensor device and decided to use a male-male USB C since I need 5 lines (V,GND,SCL,SDA,ADC). Which pin should I use for my single-...
0
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1answer
293 views

Problems wiring USB-C receptacle [closed]

(First, sorry for my English :_D) I'm doing a school project and I wanted to swap a male/plug USB-C to a USB-C female/receptacle. I thought it was just soldering the cables onto the board and it's ...
0
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1answer
142 views

USB C connector design and resistor placement for USB 2.0 data cable

I have a follow-up question to this one. I have a type C connector with 8 pins. No spec, type C female counterpart reveals G, Vcc, A2, A3, A6, A7. Remaining two pins do not respond to anything. G-Vcc ...