The USB 3.0 Promoter Group, in conjunction with the USB 2.0 Promoter Group, today announced the completion of the USB Power Delivery specification, which enables increased power delivery through USB cables and connectors. The specification expands cable bus power capabilities in USB applications, supplying higher voltage and current to deliver power up to 100 watts over USB Power Delivery certified cables. It is capable of delivering higher power to charge notebook PCs and power external hard-disk drives, devices which previously did not receive adequate power from traditional 5V bus power.
The USB Power Delivery specification enables a switchable source of power without changing cable direction. Existing USB cables and connectors are also compatible with this specification and will coexist with the USB Battery Charging 1.2 specification as well as existing USB-bus powered applications.
"USB Power Delivery enables a path to greatly reduce electronic waste by eliminating proprietary, platform-specific chargers," said Brad Saunders, USB 3.0 Promoter Group Chairman. "We envision a significant move toward universal charging based on this specification, most notably for charging notebook PCs using standardized USB power bricks or when connected to USB hubs and desktop displays that integrate USB Power Delivery capabilities."
"The publication of the USB Power Delivery specification is an important step in enabling a flexible, standardized power management ecosystem," said Peter Harrison, Director, Standards Collaboration, Nokia.
"We believe USB Power Delivery is the next big step in the USB evolution to provide high bandwidth data and intelligent power over a simple, single, ubiquitous cable," said Robert Hollingsworth, Senior Vice President and General Manager of the USB Products Group at SMSC. "USB has always combined data and power over a single cable, and this is widely believed to be a major contributor to the present ubiquity of USB. USB Power Delivery builds on that success and adds full bi-directional power that can be renegotiated as system power needs change with the end-user."
The USB 2.0 and 3.0 Promoter Groups developed the USB Power Delivery specification and have transitioned the specification's management to the USB-IF. The USB Promoter Groups are now accepting adopters of the USB Power Delivery specification. To download both the USB Power Delivery specification and adopter agreements, visit this page.