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.

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137 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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110 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 ...
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34 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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42 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 ...
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195 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)...
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24 views

Needed switch bandwidth for USB Type C D+/D- over-voltage protection

I am currently trying to add over-voltage protection to a USB C PD receptacle (with BC1.2 support.) As the SBU pins aren't used, I'd like to protect the D+/D- pins from short to VBUS. The TI reference ...
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59 views

Charging at over 5W through a USB-A-to-USB-C cable

I'm trying to use this charger to charge a USB-C device (a MacBook). The charger is specified for 12W (5V, 2.4A), and has Type-A, non-superspeed connectors. The MacBook states up to 20V, 1.5A or up to ...
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35 views

USB3.0 PD port ORing

I was designing a product in which two USB Power Delivery ports are populated in the design so as to: Provide power from wall charger supporting PD Provide high speed communication with laptop Now ...
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36 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 ...
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30 views

Cheap USB-PD brick/dongle/dev kit with programmable current capability

Wikipedia claims that in USB-PD v2.0 or v3.0, a source can advertise that it is capable of outputting 5 V at any current from 0.1 to 3.0 A. I suspect I could use this capability to limit the charging ...
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1answer
65 views

Will USB-PD work with and extension cable in the circuit?

I want to replace the USB type A port on my trucks dash with a USB-C panel mount and give it the ability to "fast charge" my phone. Unless there is a product that I am overlooking it seems I ...
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84 views

USB C - max current without negotiating PD

I have a device that requires 5W @ 5VDC and want to convert it to USB C power. I am torn between a design that just has two 5.1 kΩ Pd resistors on the CCx lines or one that includes a PD negotiator (...
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2answers
101 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 ...
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1answer
2k 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/...
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1answer
154 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 ...