The Universal Serial Bus (USB) is a port that allows up to 127 devices to be connected or removed without needing to reboot or restart the system. It has a common interface that enables communication between devices and a host controller such as a personal computer. Not all peripherals could previously be powered by a USB cable as long as the maximum power was capped at 7,5 watts. Examples include external hard-disk drives (HDDs), medium and large speakers, monitors and external graphic cards. With a new power-delivery specification that allows for a maximum power of 100 watts, many of these peripherals will now only be required to connect to a USB port without any further individual power supplies needed. EN IEC 62680-1:2018
is intended to be fully compatible by extend the existing USB infrastructure and defines a power delivery system covering all elements of a USB system including: hosts, devices, hubs, chargers and cable assemblies up to 100 watts. It updates some specifications and the interoperability of a USB (Add VPD Product Type - Specification Revision Interoperability - VCONN_Swap Clarification - Chapter 7 Source and Sink Behavior - Battery Numbering - Chunking Clarification - FR_Swap State Operation - GoodCRC Specification Revision - Slew Rate Exception for Source) without losing compatibility with previous versions.
This standard was developed by CLC/SR 100 - Audio, video and multimedia systems and equipment.
The Technical Secretariat of CLC/SR 100 is held by AFNOR-French Standardization System-UTE
For more information contact : Geert MAES