All Questions
Tagged with power-delivery usb
15
questions
0
votes
2
answers
57
views
Limiting voltage on voltage monitoring pin
Question:
How do I limit the voltage on a voltage monitoring pin to 28 V DC (due to voltage rating) when the power rail voltage to be measured may go up to 48 V DC continuous?
Are there DC-DC ...
0
votes
0
answers
84
views
USB connection and reconnection issue
I have upgraded a design with a USB2412 to a design with a USB2514Bi chip to have more USB ports available.
During testing we discovered the device works like expected when we connect it to a USB A ...
user220456
3
votes
2
answers
533
views
Crossing USB Type-C wires on debug probe
I plan to make debug probe that allows me analyze traffic on USB Type-C cable. I want to make blue middle board from the following schametic:
From my point of view right port of the my board is ...
- 385
0
votes
0
answers
52
views
DC powered USB wall faceplate
Looking to make a USB Power Delivery faceplate to install within a wall. Looking to feed the faceplate from a 48V DC Bus that I have available. Looking to get ideally x2 USB C connectors and x2 USB A ...
- 315
0
votes
1
answer
96
views
USB receptables for power delivery? [closed]
I'm not totally sure this is the right place to ask, but does anyone know of any USB C receptacles for low voltage and current power delivery? I can't find a good option with a good schematic.
- 223
1
vote
0
answers
245
views
USB C PD source not powering simple USB 2.0 sink
I made a simple PCB that I wanted to be powered through a USB C connector with low current requirements (~50mA). I spent some time reading through the USB C Spec as well as reading other relevant ...
- 345
0
votes
0
answers
72
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USB 2.0 0.9A and Data (hub) Simultaneously
Trying to combine USB hub and higher-than-default USB charging currents.
My experience with implementing USB is close to zero, although I usually have no problems with datasheets and other designs I ...
- 3,613
1
vote
2
answers
915
views
Creating a USB charger from 2-wire DC [closed]
I'm trying to tackle a problem where I want to wall-mount a USB device on a brick wall that only has a single 2-wire (14AWG) cable available, and no room / capability to run a new cable or remove the ...
- 119
0
votes
1
answer
116
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Can a normal USB C panel mount socket be used to receive USB PD?
I'm building a lamp that has (up to) three wall-mounted units connected to a central control box. Each one gets three low-voltage control signal wires and 12V 3A DC power. I'm figuring that a USB PD ...
1
vote
0
answers
451
views
Draw 15V from USB C Power Delivery devices
I need to draw 15V from USB C PD capable devices such as power banks or chargers.
So I need a rather small tool or build for this I can draw about 15V 3A via usb c with.
Thanks for your help.
0
votes
1
answer
177
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 ...
- 1,197
1
vote
1
answer
100
views
USB PD Power Delivery Skip 9V Requirement
Is there any way possible to implement a USB C PD port that only sources 5V and 15V? As I read the spec (USB Power Delivery Specification Rev. 3.0, Version 1.2, June 21, 2018) it seems that I cannot ...
- 4,669
2
votes
0
answers
212
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....
- 21
5
votes
1
answer
1k
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 ...
0
votes
2
answers
601
views
What are the limits for a USB PD charger and device to settle on a charging profile?
I've got a laptop which charges through USB Power Delivery. The charger supports the following profiles:
5V x 3A
9V x 3A
12V x 3A
15V x 3A
20V x 3.25A
I know USB PD devices and chargers enumerate ...
- 101