Questions tagged [power-delivery]

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89 views

Why do new phones and tablets with a USB Type-C connector use a USB Type-A charger? [closed]

I have noticed that many relatively new phones and tablets with USB Type-C connectors (e.g., Nokia 6.1 or Samsung Galaxy Tab A T-590) are bundled with USB Type-A fast chargers (e.g., 12V, 1.5A) and a ...
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1answer
42 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 ...
1
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0answers
53 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
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1answer
59 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
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0answers
36 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 ...
2
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0answers
50 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....
3
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1answer
348 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
1answer
293 views

Can Neutral terminal stay connected to a power supply and Live terminal switched?

I bought the following switch which I would like to control the AC power (230V 50Hz) to an AC/DC converter with. This switch only permits one terminal to connect/disconnect, meaning I could control ...
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2answers
109 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 ...
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0answers
25 views

What measures are taken to control inductance in switching stations?

I was thinking about the effect of changing loads on the power grid and I'm curious about the effects of inductance, how much inductance there is, and how to prevent it from causing voltage changes at ...
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0answers
40 views

How can I figure out how large a capacitance a chip has in-package?

I'm designing a board with a fairly high frequency chip. It uses a 2.5GHz clock and can drive outputs of +-30mA total with edge rates in the 300ps range. There is a reference design using this which ...