Encouraged by the increasing amount of mobile devices available and incoming, the USB 3.0 Promoter Group has started developing a new power delivery specification which will enable those devices to get charged, via USB, a lot faster. Set to co-exist with the USB Battery Charging 1.2 specification and existing USB bus-powered applications, the new power delivery specs will allow up to 100W to be pumped out through a USB connector, and will work both with USB 2.0 and USB 3.0. Moreover, the specs enable voltage and current values to be negotiated over the USB power pins, and they ensure a switchable source of power delivery without changing cable direction. For example, charging the battery of a notebook PC, or simply powering that notebook PC while actively using the USB data connection, would be possible. Conceivably, a notebook PC could rely solely on a USB connection for its source of power. The USB Power Delivery specification will be reviewed in Q4 and should be offered to USB Implementers Forum (USB-IF) for publication in early 2012. This points out to a 2012 arrival of supporting hardware.
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Written by
Hideo
Wednesday, 10 August 2011 21:47
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