Questions tagged [usb-pd]

USB-PD tag relates to the Power Delivery extension of the USB spec. USB-PD is capable of support up to 100W of power through negotiation between spec-compliant USB phys.

Filter by
Sorted by
Tagged with
1
vote
0answers
18 views

Does USB-PD prevent power banks not to fall asleep?

I'm playing around with PD board (SparkFun's DEV-15801, programmed for 9V) and power bank (Anker PowerCore 10000 PD) and observe the following behavior: When I connect PD board to USB-A port of the ...
1
vote
2answers
82 views

Eliminating millivolt-level reverse current flow with diode or other

simulate this circuit – Schematic created using CircuitLab I am working with PD Buddy Sink, a small USB-C PD negotiation and power breakout board. It takes USB-C PD input, performs the PD ...
0
votes
2answers
671 views

Routing power and HDMI signal into usb type-c for DIY computer monitor

I am starting a project to build a DIY monitor. I have a spare lcd panel (model # LP156WF6) taken out of a laptop. I plan on buying a controller board for it and building it into a homemade enclosure. ...
0
votes
0answers
32 views

What this mosfet really needed on the STUSB4500?

I want to use STUSB4500 in a project, to have USB C PD. A MCU will also be on the same PCB and it will control the STUSB4500 via I2C. There are two schematics in the datasheet (https://www.st.com/...
1
vote
1answer
59 views

USB-C Powering Electronics and its Circuitry

I recently designed a PCB that'll power and control a NEMA 17 stepper motors. I decided it will be powered by a 15W (5V3A) USB-C cable and wall adapter. According to my research, the 15W power is the ...
0
votes
1answer
783 views

Solar power to USB C PD

I want to convert direct sunlight energy into usb c pd. USB C Pd then will be used to charge a powerbank. The bank can be charged via USB C. The actual solar panel is this: https://www.amazon.de/...
-2
votes
1answer
52 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 ...
1
vote
0answers
66 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 ...
1
vote
1answer
71 views

Why does this USB device draw different currents from different sources?

What would cause a USB device to draw drastically different amounts of current, but still function properly? Background & Research: I purchased a Playstation 2 Graphics port->HDMI converter (...
0
votes
1answer
243 views

USB C Spec Compliant way of splitting power

I'm trying to get a Y Splitter going on, where one of the sides is passthrough on the CC pins and the other side has a step down/buck converter that can take 5-20v input and always do 5v output. I ...
1
vote
0answers
81 views

Powering 12V device from USB-PD port not supporting 12V

I would like to power a 12V 2.5A device using barrel connector from a 60W USB-PD capable thunderbolt 3 port. I have a few of those pd trigger cables (https://www.aliexpress.com/item/4000025832414.html)...
7
votes
5answers
7k views

How to get 20 V from a USB-C charger?

I want to power my DIY stuff with a MacBook Pro USB C charger. The label on a charger says that it can provide three different power profiles: 20.2V - 4.3A 9V - 3A 5.2V - 2.4A There is a ton of ...
0
votes
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 ...
0
votes
1answer
48 views

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 ...
0
votes
1answer
92 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
votes
2answers
77 views

What would happen if a charger tried to pull more current than a QC 3.0 source can output?

I've got this charger: https://store.dji.com/product/mavic-car-charger It takes 12.7 - 16V input from a car and outputs 13.05V at 6.1A (~80W) I want to utilize a USB-PD and / or USB-C QC 3.0 ...
1
vote
2answers
439 views

Can I charge my AC rechargeable hearing aid batteries via USB PD with converter?

I hope you'll be able to help. First of all this is a bit of a complex one that I'm struggling with. I wear hearing aids, both of which use removable, rechargeable batteries, charged only by a charger ...
0
votes
1answer
550 views

Purpose of ICs in EMCA - Type-C

I can't find the purpose of IC ( which is power sourced by VConn) inside the EMCA. Source/Sink can communicate with EMCA via this IC. But what is exactly function of this IC in Power Delivery ? P/S: ...
15
votes
3answers
15k views

Do all USB Type C cables support full power delivery

USB Power Delivery is able to work over USB Type A/B cables which are specifically designed to support it. Since the USB Type C was designed much later, I am curious. Do all USB Type C cables support ...