USB power


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USB power

The USB-IF has defined power ratings with each USB version as well as a Battery Charging specification for power adapters. Over the years, the power capability of USB increased substantially from the original 2.5 watts to 100 (see USB Power Delivery). See also poweredUSB.
      MaximumVersion     Volts Amps    Watts

  USB 2.0      5v   .5A     2.5w

  USB 3.0      5v   .9A     4.5w

  Battery Charging
  BC 1.2       5v  1.5A     7.5w
  (see below)

  Power Delivery over USB-C cables
  PD           5v    3A    15w
  PD           9v    3A    27w
  PD          15v    3A    45w
  PD          20v    5A   100w
  See  USB power delivery.


USB Battery Charging
When USB Battery Charging 1.2 was introduced in 2010, the following terms were coined to define the USB port's functionality.

Standard Downstream Port (SDP) - Data transfer only.

Dedicated Charging Port (DCP) - The port in a power adapter for charging only; no data transfer.

Charging Downstream Port (CDP) - A port that is capable of transferring data and charging the device at the same time. Also called a "charge and sync" port.
References in periodicals archive ?
Automotive USB Power Delivery System Market Share, Size, Trends, And Business Opportunity Analysis Report 2019 include historic data, with forecast data to 2023.
[USPRwire, Mon Jul 29 2019] USB Power Adapters Universal Serial Bus is an industrial standard term that portrays connectors, cables and other correspondence protocols that enable power supply and trade of data between gadgets and equipment, such as personal computers and smartphones.
In addition, the MRW-S3 can receive up to 100W USB Power Delivery (USB PD)3 to ensure stable and reliable connections with USB devices.
[ClickPress, Thu Mar 14 2019] USB Power Adapters Universal Serial Bus is an industrial standard term that portrays connectors, cables and other correspondence protocols that enable power supply and trade of data between gadgets and equipment, such as personal computers and smartphones.
The USB powered LED strip kit allows you to create an immersive and customizable lighting experience to complete your setup and even improve your picture quality.
Many USB 3.1 devices take advantage of the USB Power Delivery (USB-PD) spec, which has a maximum power output of 20V/5A (100W).
You could carry along a portable USB power supply, but if you're like us, you might forget to recharge it--if you can remember where you left it.
For those times when you need some extra light in your world but you also need some extra charge in your phone, you can call on the Lighthouse 400 Lantern and USB Power Hub.
While the Alexa Mini's small form factor lends itself to side-mounting power on the Freefly MoVI M15 stabiliser system, the DUO-C95 battery provided Hughes with the powering options he required through the two D-Taps features and a USB power port.
The USB Implementer Forum (IF) recently released updates to the USB Type-C, USB Type-C Cable and Connector, and USB Power Delivery specifications.
Fresco Logic is a provider of advanced I/O solutions that deliver highly efficient connectivity such as USB 3.1, USB Type-C, and USB Power Delivery for next-generation consumer electronics, personal computing, storage and mobile devices.
In its place, though, there's a new problem: USB power. Not all USB chargers, connectors, and cables are born equal.