100 watts USB

Many of us are used to charge small gadgets (phone / tablet / etc.) From a computer via USB. However, the existing USB 2.0 specifications only allow a voltage of 5 V and a current of 0.5 A, while in USB 3.0 the limit is slightly increased to 5 V and 0.9 A. It turns out that the maximum power is only 4.5 W, which is completely Little. But everything will change if it is possible to adopt an addendum to the specifications of USB Power Delivery . This technology will transfer up to 100 watts via USB 2.0 and 3.0.

Thus, theoretically, even large and energy-intensive devices can be powered via USB: powerful speakers, a monitor, a printer, and so on, using standard USB cables and connectors. You can even charge one laptop from another laptop. In fact, USB can become a universal power standard for computers.

100 watts of power also means that gadgets can be charged at a faster rate. Here, the bottleneck is already the battery and power supply. With such a power consumption, your laptop can run out in half an hour if you connect devices for recharging or an external monitor / printer, etc. to it. Not to mention the fact that the power supply of the laptop is generally unlikely to withstand such a voltage and amperage.


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USB Power Delivery specifications coexist with USB Battery Charging 1.2 specifications and are backward compatible with USB 2.0.

Apparently, USB Power Delivery is a protective measure against Apple Thunderbolt technology, to which Apple’s exclusive rights expire in the spring of 2012 . That is, developers and OEMs will get cheap and versatile USB technology at the same time as Thunderbolt. Plus, USB Power Delivery will be technically better, because Thunderbolt provides only 10 watts of power.

Demonstration of USB Power Delivery is scheduled for September 13, 2011, at the same time technical details will be published. The ratification of the standard is at the beginning of 2012.