"Charging for two minutes, talking for two hours" is estimated to be The most popular mobile advertising words in recent two years. Although there are many breakthroughs in lithium battery technology every year, the civilian grade lithium battery has been in place for many years, and mobile phone manufacturers can only use heap capacity and fast charging curve to save the country. Among the fast charging, Qualcomm's QC fast charging is undoubtedly the most popular.

Recently, it is rumored that Qualcomm has begun to prepare a new fast charging technology, QC4.0, for next year's flagship Snapdragon 830. The full name of Qualcomm Quick Charge is QucikCharge. The most common specification of QC1.0 is 5V2A charging on low-end computers; The most common high voltage route of QC2.0 is 9V and 12V, and the power is generally around 15-20W; QC3.0 focuses on improving the charging efficiency. INOV technology can provide 200mV step voltage adjustment gradient, which can reduce the heating of mobile phones while improving the speed.

and QC 4.0 fast charging is rumored to have the highest strategy of 28W power. 5V/4.7A~5.6A and 9V/3A are used (12V is discarded). At the same time, the step voltage accuracy of INOV technology is improved to 10mV, further improving the charging efficiency and reducing heat. It is expected that the Snapdragon 830 platform will be launched next year, and it may even be integrated into the SoC. However, it is unknown whether an independent power chip will be provided for other SoCs to enjoy new fast charging.

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