China's fast charging standard released! Download and study

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China's fast charging standard released! Download and study [Copy link]

On May 28, 2021, the Telecommunication Terminal Industry Association released the converged fast charging standard "Mobile Terminal Converged Fast Charging Technical Specifications". This standard aims to solve the problems of complex and changeable fast charging standards and incompatibility on the market, and also plays a positive role in improving user experience and energy conservation and environmental protection.

UFCS stands for Universal Fast Charging Specification. This standard is led by the Green Energy Working Group (WG10) and co-sponsored by CAICT, Huawei, OPPO, vivo, and Xiaomi. It has also received strong support from Honor, Silergy, Rockchip, Liptech, Onbo Electronics, Diancool Networks and many other terminal and chip companies and industry partners.

It is worth mentioning that in the development process of the UFCS fast charging standard, leading manufacturers such as Huawei, OPPO, vivo, and Xiaomi broke 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 adapt to the needs of the long-term development of the fast charging ecosystem.

According to the UFCS fast charging specification, the standard adopts a continuous adjustment mode, and the output voltage is divided into four programmable gears: 5V, 10V, 20V, and 30V (similar to USB PD3.0 PPS voltage regulation). 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, the programmable voltage range of the 20V gear is 12V-21V, and the programmable voltage range of the 30V gear is 21V-36V.

In addition, the UFCS fast charging standard also defines the applicable power range of programmable voltage, where the 5V programmable voltage gear is applicable to power supply equipment with a power output of 20W-90W, and the maximum output current is 3A. The 10V programmable voltage gear is applicable to power supply equipment with a full power range. When the power of the power supply equipment is 20W or between 20W-40W, the corresponding maximum current is 2A. When the output power is 40W and above, the corresponding maximum current is 3A.

The 20V programmable voltage range is suitable for power supply equipment with an output power of 90W or above, and the corresponding maximum current is 3A. The UFCS standard also stipulates that power supply equipment within 200W does not have a 30V voltage output range.

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 shall jointly obtain the cable electronic label information, and force the charging equipment to add a cable impedance detection function.

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When the current is >6.5A, it is necessary to add UFCS cable electronic labels; when 4A＜current≤6.5A, it is recommended to add UFCS cable electronic labels, and other cable identification schemes can also be supported; when the cable current is ≤4A, it is not necessary to identify the cable, and the cable current capacity is matched according to the cable impedance.

Since 2014, domestic fast charging technology has developed rapidly and is at the international leading level in terms of charging speed and charging safety; the fast charging experience has been widely recognized by market users and has become a standard feature of mobile phones.

However, due to the long-standing problem of protocol incompatibility in the fast charging industry, especially among major mobile phone brands, there are many fast charging protocols and they are incompatible with each other. Different brands of mobile phones and chargers can often only achieve basic low-power charging. This not only seriously affects the user's fast charging experience and causes a waste of resources, but also greatly increases the R&D risks and costs of the upstream and downstream of the industry chain.

The vision of the UFCS fast charging specification is to change the incompatibility of various charging protocols, become a universal fast charging standard in the fast charging industry, and achieve unification of the fast charging market.

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Can download and read

Technical Specifications for Integrated Fast Charging of Mobile Terminals

okhxyyo

Great!!! It will be much easier to do things with the standard

90houyidai

Each company has its own fast charging standard. I don’t know if this standard can regulate and constrain the standards of each company.

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90houyidai posted on 2021-6-17 14:48 Each company has its own fast charging standard. I don’t know if this standard can regulate and constrain the standards of each company

This is a standard specification and can be said to be the result of competition among various manufacturers.

leeshanyi

200W is quite powerful for charging a mobile phone. It would be great if the battery charge storage technology could be so powerful someday.