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China's fast charging standard is officially released! The four giants are all in-Huawei, Xiaomi, Quick Charge-Kuai Technology (Media under Drivehome)-Technology

by:YoukingTech     2021-09-01
Recently, the Telecommunications Terminal Industry Association released the converged fast charging standard 'Technical Specifications for Converged Fast Charging of Mobile Terminals.' This standard aims to solve the complex, changeable and incompatible problems of the current fast charging standards on the market, and it also plays a positive role in improving the user experience, energy conservation and environmental protection. The full name of the UFCS fast charging specification is Universal Fast Charging Specification. The standard is led by the Green Energy Working Group (WG10), led by the Institute of Information and Communications Technology, Huawei, OPPO, vivo, and Xiaomi, and has been honored by Honor, Silicon Power, Rockchip, and Lihui Technology , Angbao Electronics, Dianku Network and many other terminal, chip companies and industry partners strongly support. It is worth mentioning that in the development of the UFCS fast charging standard, Huawei, OPPO, vivo, Xiaomi and other head manufacturers have broken the inherent technical standards and made great contributions to the formulation of a unified technical standard for fast charging of mobile terminals. At the same time, thanks to the joint efforts of these leading manufacturers, the UFCS fast charging standard can meet the needs of the long-term development of the fast charging ecosystem. According to the content of the UFCS fast charge specification, the standard adopts a continuous regulation mode, and the output voltage is divided into four programmable gears of 5V, 10V, 20V, and 30V (similar to USB PD3.0 PPS voltage regulation). Among them, the programmable voltage range of the 5V gear is 3.4V-5.5V, the programmable voltage range of the 10V gear is 5.5V-12V, and the programmable voltage range of the 20V gear is the programmable voltage of 12V-21V and 30V. The range is 21V-36V. In addition to clearly stipulating the output power of the power supply equipment, the UFCS fast charging standard also stipulates that the power supply equipment and the charging equipment jointly complete the acquisition of cable electronic label information, and force the charging equipment to increase the cable impedance detection function. When the current is greater than 6.5A, the UFCS cable electronic label needs to be added; when 4A
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