Questions tagged [usb-c]
USB (Universal Serial Bus) Type C, a 24 pin connector system with a rotationally symmetrical connector. Consider using the "USB" tag in addition to this one.
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Are the data pins necessary on a mini USB connector used only for charging a tablet? Is the ID pin used for OTG?
I have an older tablet, and I plan to replace the charging-only micro USB connector (which does not transmit data) with a USB-C connector. However, upon examining the pinout, I noticed that the two ...
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How do I implement a USB-C connector onto a pcb to power a 3.3v Raspberry Pi Pico?
I've been looking into how to create my own pcb with a USB-C connector which breaks out into pins (VCC, D+, D- and GND) to then connect this to a Raspberry Pi Pico microcontroller but I have a few ...
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How should I select the ohm values for pull-up and pull-down resistors in a device with a USB Type-C connector used solely for power
Good morning, everyone. I am exploring the transition of the receptacle from a micro USB connector to a USB Type-C. Initially, my plan included implementing both sink and source capacity. However, ...
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Replace micro USB tablet connector with USB C
I'm considering upgrading my dad's old tablet, which currently has a micro USB connector. The issue arises from his habit of frequently misplacing the charger, and I'd prefer not to rely on an ...
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DC-DC design with STUSB4761
I am designing a powered USB HUB (UFP) which can provide power to the host through USB PD. This means I need a PD controller which supports DR_Swap and it seems that STUSB4700/STUSB4710 cannot be used ...
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Is a diode really necessary when exposing USB VBUS as a pin on a dev board?
Hobbyist dev boards are typically powered by USB and the GND and VBUS pins of the USB connector are usually broken out as pins on the board (so, that one can power additional devices connected to ...
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USB-C Connector Misalignment: Contacts Elevated by 0.5mm from PCB Pads
We are integrating a USB-C connector, specifically part number USB4715-GF-A, which is rated IP-68. The CAD model used was obtained from componentsearchengine.com. Upon assembling the connector CAD ...
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USB C Power Delivery using below schematic?
I have limited experience with USB C and I want to design a board which needs to charge both a smartphone and another subsystem which draws around 1W. I have read that by just connecting a 5.1k ...
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What is the meaning of a 28k pull-up resistor in an USB A-to-C cable?
Since that debacle a few years ago, I assembled a small test harness where I plug every new A-to-C cable that I get to check for the 56k pull-up resistor between CC and Vin and toss out the ones that ...
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Is there a voltage limit implemented in USB A to USB C charging?
We have a supplier that designed a battery pack for us. The pack has a USB C port, and comes with a USB A to USB C cable.
The cable only has two wires (V+ and GND), with CC resistors embedded in the ...
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How to design dual mode USB Type C power bank?
I want to design power bank that has 2 USB Type C ports and uses a large lithium battery inside.
I want to be able to use 100W power delivery when possible. I am absolutely overwhelmed by looking at ...
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Help identifying chip in Huawei motherboard
Can you help me identify this chip? It looks like a SOT23-5 chip, it seems to be part of the USB-C Power Delivery. The laptop doesn’t power up because this chip seems to be part of the negotiation ...
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Raspberry PI (CM4) video to USB-C DisplayPort alt mode
I'm working on a project where I aim to utilize a USB-C port to embed both video signals and USB functionality. USB-C's "Alt Modes" offer potential solutions, namely DisplayPort (DP) Alt ...
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Configuring a USB-C/PD Controller IC for a Type-A Output
I'm working on a new USB charging product to be installed on airplanes. I understand the power requirements well enough: it has to take 12V-32V input and be able to provide up to 45W of power per ...
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What shape should the PCB edge have for this USB connector?
In the recommended layout for USB4500 by GCT (a mid-mount USB-C receptacle) there are these unexplained circular cut-outs on the PCB edge. What are these for? Are they needed? There are no dimensions ...
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