Questions tagged [usb-c]

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80 views

USB Type-C to Type-C Cable has voltage in one orientation only

I'm designing a battery powered device, which gets charged with 5V. I wanted Type-C as the charging interface, so I designed an appropiate Type-C Port for the device: As you can see, I added the ...
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41 views

5-20V VBUS sensing with 5V only IC

I am designing a board with a FT230 USB to UART IC. In battery powered applications, one of its GPIO can serve as a VBUS sensing pin. However, the FT230X was designed for 5V applications, before the ...
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43 views

USB VBus Current Shaping

I'm trying to solve a design issue regarding a USB device under development. The unit is quite similar to the TS-80P in that it implements Power Delivery and the main function is heating. We require ...
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1answer
51 views

USB type-c Spec Analysis

I'm having difficulties anlysing the USB Type-C Spec R2, section 4.6.2.1 "USB Type-C Current" paragraph. It is said that "When a Source is advertising USB Type-C Default current, the ...
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1answer
74 views

Need a minimal circuit to obtain 5V from discrete 5V to 20V (5V, 9V 12V, 15V or 20V) input

I have a Vin that can cycle between a set of discrete levels: 5V, 9V, 12V, 15V or 20V (a USB-C PD source.) The Vin will be ...
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0answers
89 views

1.5A USB Device Design

I seek to design an USB device or UFP, using a USB-C connector and do not wish to use power delivery (PD) of USB-C as my application would be a big underuse of this feature. The device would use a ...
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0answers
35 views

USB-C Battery pack - charging and powering other devices using the same USB-C plug

I'm designing an ultra-small LiPo 1C battery pack using the TopPower TP5400 charging control and boost output regulator IC. Design is working fine, but currently I'm using a microUSB socket for ...
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0answers
29 views

USB-C PD independant Data [closed]

I'd like to use a generic SBC (5V@3A + USB3@USB-c) as a client via USB-c but also charge a battery, at full PD range. So on plug in, PD should negotiate say 12V if the the Host provides, but at the ...
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0answers
30 views

How should I implement a USB-C Power Mux Circuit with Enable?

I'm designing a device which can be powered by DC IN or USB-C. The USB-C is a DRP, so it may be tasked either with sinking or sourcing power. The DC IN may be between 5V and 20V, so from here I'll ...
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1answer
26 views

Makeshift Passive USB Charger 5V OVP

I was looking to protect my 5V device from 20V, since the charging port is Type-C, but used for USB 2.0 communication without any power delivery or bc. Expected to be charged with 1A-1.5A from the ...
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2answers
68 views

Can I convert usb-male device to usb-female pluggable device?

I have an external audio card, it's small and it has usb-a male to plug it anywhere, well anywhere you have usb-female of course :) I've been using it on the few mobile phones I have. (some are on ...
2
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1answer
64 views

USB Type-C: Are CC1 and CC2 interchangeable?

The schematic bellow is a USB controller, designed to be used to change USB's VBUS voltage: Question: Are CC1 and CC2 interchangeable, meaning that red-marked labels could be switched between them, i....
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1answer
78 views

Where might I find a weird hybrid USB A-MicroB plug? [closed]

I have a product with a USB-A plug that can open to reveal a Micro-B plug: Any idea how or where to find such a thing? I tried searching Mouser and Digi-Key but don't see anything like it. (Actually,...
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1answer
75 views

Why doesn't my car hardwire USB C loom work?

I decided to tap off the negative and positive wires for a 12V cigarette lighter and wire in a USB C charger to discretely provide permanent power to a Bluetooth receiver in my car. I have a 4A inline ...
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1answer
33 views

How do I determine my new power requirements when switching my peripheral to Raspberry Pi

Problem: I have just moved my camera array USB peripheral from a MacBook Pro to a Raspberry Pi 400, and the Pi can only see at most 19 of the 24 cameras that the MacBook Pro can see. I think this is ...
0
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1answer
89 views

Purpose of this IC in USB 3.0 Hub

I'm trying to design my own USB 3.0 hub based on this commercial design, I can understand everything in this design except the usage of IC "ASM1543". Unfortunately there is no datasheet ...
1
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1answer
33 views

Powering LED and DC motor with USBC PD

I'm looking to power a circuit with USB-c with a trigger board negotiating 20Vin up to 2A. The circuit would consists of a high power LED strip that runs 21.5V @1A and a DC motor water pump rated for ...
0
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1answer
64 views

Correct way to wire USB 2.0 Type C connector?

I'm playing around with building a simple keyboard, that will have just few buttons, nothing complex. I have decided to use USB 2.0 Type C connector, like this or this. Now when following USB 3.0 ...
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0answers
31 views

FUSB302 - Two devices, transmission between them

I have controller device with a FUSB302 Programmable USB Type-C Controller with PD for power detection for charge battery. I want to make a subdevice to emulate my own hardware. I know that FUSB302 ...
0
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0answers
18 views

Can USB PD pass-through charging deliver different voltage settings than it consumes?

I'm trying to understand USB PD pass-through charging and what charger/dock/host combinations would be compatible or how much power would actually be passed through. I have a MacBook Pro 2017 which ...
7
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1answer
474 views

Routing USB 3.x Type-C Signals

I'm designing an open source USB Type-C Switch (KVM Style), and I started to route the USB 3.x SuperSpeed+ and USB 2.x HighSpeed differential signal pairs on the PCB. The switch will have 2 input + 1 ...
0
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1answer
46 views

Solder stripped USB-C cable to Keyboard PCB

The cable that came stock with the board had 4 wires in it. They were red black white and green. Where should I connect them? Also some pads on the right might be lifted so I don't know if it is ...
0
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1answer
43 views

Implement RS485 or I2C protocol using the usb-c connector?

I was wondering if there's any reason why I can't implement RS485 or 12C communication on the data pins of the USB-C connector? I can't find anything on the internet that tells me not to.
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1answer
58 views

Where do I solder the shield wire on my USB C breakout?

First of all, I'm new to all this so I most probably won't understand complicated explanations. I'm planning to solder a USB-C breakout to my old keyboard's wires, but I'm not entirely sure where to ...
0
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1answer
83 views

Adding extra power to USB power lines [closed]

I see many posts regarding adding more power to supplement USB ports power but could not find a good answer how it can be done. My configuration is like this (except the red line): I have a raspberry ...
1
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1answer
89 views

Upgrading a device female micro-USB connector to USB-C

I have a battery manager PCB, which has a microUSB female connector for power-input (5V from smartphone charger for instance). The power input is fed to a PMU which charges a lipo battery and power a ...
0
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1answer
75 views

Adding a second usb port to get around current limit

I'm building a keyboard with the proton c controller, from what I can gather it uses a usb2 port. Now the problem is I want to use an ssd1306 OLED panel and almost per-key RGB (around 70 LEDs total). ...
0
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1answer
58 views

Looking for a way to connect wires to a breakout board without soldering

I'm looking to get a custom keyboard cable but there's a catch - my keyboard cable is currently hardwired. The solutions I've come up with are either to use a janky solution where I use solder splices ...
0
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1answer
33 views

Finding the exterior dimensions of a USB type-c receptacle

I'm going to be using this USB type-c receptacle for my project. For this project, I need to make a cutout in my enclosure to make this receptacle fit. I consulted the data sheet and found technical ...
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0answers
112 views

Why doesn't USB power the circuit?

I am absolutely new to electrical stuff, and I am just trying to create my first project. I am basically trying to drive a strip of RGB LEDs (in a form of a Christmas tree) using attiny85. I have ...
2
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0answers
77 views

So can we just draw 500 mA from any USB port without enumeration now?

The USB Type-C Spec R2.0 defines the USB Type-C Current feature, in which the power Sink observes the voltage on the CC pin to determine how much current is available from the Source, which falls into ...
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0answers
54 views

Taking more than 2.1A from a two-port “2X 5V / 2.1 A” USB powerbank? [duplicate]

I just bought a powerbank for intending of using it to power a Rasberry Pi4b But, it seems i did not do enough research regarding the requirements of the Pi model i have. The powerbank is listed as &...
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0answers
24 views

Send data using USB-PD on android phones [ROOT]

USB-PD can transfer data at low speeds between devices and is quite a bit simpler than normal USB communication. Is it possible for an android app to send arbitrary USB-PD data? The phone has root ...
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1answer
65 views

USB Type-C 10Gb mux, or hub IC [closed]

I am planning to create a PCB that takes the Type-C frontpanel header, with a speed of 10 Gbps and provides two USB Type-C ports from that one cable. The PCB will be a frontpanel mod. During my IC ...
0
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2answers
61 views

charging speed from USB QC3.0 to USB-C PD

I am trying to find this information online for a while but I cannot find any precise info, thus Q on this community seems appropriate. I would like to know if a device having USB PD charging port (...
0
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2answers
62 views

USB-C laptop charger / circuit breaker device

Is it theoretically possible to build a device that connects to a laptop via USB-C, receives battery level information and connects laptop to a charger only if the battery level is in certain range? I ...
2
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1answer
77 views

What USB-C Footprint is this?

I have to replace a USB-C connector. After desoldering I found a rather uncommon footprint. Has anyone seen this footprint before and knows where to find a new connector of this type? Thank you!
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0answers
35 views

Low power USB C power supply

I am searching for a tiny board to that accepts an usb-c cable and outputs 5v. To my understanding, for the few hundred milliamps two 5k1 resistors on the board would suffice. PD is not needed. I ...
1
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1answer
61 views

Draw 20V 3A out of USB-C PD

I'm a newbie trying to figure out how to power a DIY project using USB-C PD. I'm building a project using about 120 RGB LEDS (consuming 60mA at 5V) and a Raspberry Pi 4 (max 3A at 5V). So I would ...
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2answers
337 views

Is it possible to connect USB 3.1 Type C to ESP32?

So, I once looked at the pinouts of USB 3.1 Type C: and I found out that there were RX and TX pins, but they had + and -. Is it possible to connect the serial pins to the ESP32,as there are two on my ...
4
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1answer
117 views

STUSB4500: Unable to negotiate USB-C PD voltage higher than 5V

for my project, I have decided to use STUSB4500 for negotiating 20V for powering external remotely controlled LED lighting. My circuit design comes from the minimum implementation in the datasheet, ...
2
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0answers
66 views

USB C default voltage output 5V?

I have a USB C powerbank and require it to power a "dumb" circuit, i.e. just a USB C connector with, for example some LEDs on it. There is no microcontroller. I used a voltmeter and a USB C ...
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1answer
46 views

Any teardowns of a usb type a male to type c female adapter? [closed]

I'm trying to make my keyboard cable detachable and USB type C, need to know how the wires in a type a male to type c female adapter would look (one with a short wire in between and not just a board).
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0answers
85 views

How do I make a keyboard cable detachable with a USB C female port?

Alright so I'm new to all of this but I've been modding my keyboard recently and would like to get a custom cable for it. I saw this video on how to do this with a USB micro connector, however I know ...
2
votes
1answer
71 views

How do I short D+/D- pads on usb type c connector?

I am working on a design which utilizes a USB type c connector. My question is what is the proper way of connecting the duplicate D+/D- pads? and do you recommend a specific trace width/ via size? You ...
1
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1answer
53 views

can I charge battery at the same time as using it if it is the new usb c pd

Sorry for such a newbie question. I am still trying to find my feet. I know that a battery cannot be charge and discharge at the same time as I find this: No, a battery can't be charged and ...
0
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1answer
61 views

Parallel Usage of Buck Converters | LM2596 Module

For my application, I need three voltages +5V, +15V, -15V Initially, I was using wall socket plugs to connect two 15 volt adaptors, in which I connected the + and - together and considered it as ...
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2answers
148 views

USB C standard insertion depth?

I'm doing a board layout that involves a GCT_USB4110-GF-A USB receptacle. I need to accurately place the receptacle on the board so that when a user plugs in a USB-C cable, the plastic part of the ...
2
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0answers
201 views

Poor man's oscilloscope - more simple

In our lab we have NI cards and work with -10 to 10V. Oscilloscopes are rare and some mobile and quick-and-dirty solution would be fine for debugging. Therefore the 'poor man's oscilloscopes' that ...
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0answers
75 views

Is it allowed to use a USB-C connector to a USB 2 host?

I am working on a product that is intended for at least the european market and possibly the US market as well. I am not at all acquainted with the USB specifications, and currently I do not intend to ...

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