Fast charging technology has flourished in the middle of recent years, and the charging power of electronic products has been continuously improved, creating favorable conditions for the development of the high-power mobile fast charging source market. The fast charging chip is a power management SOC for multi-port high-power fast charging applications. It integrates a microprocessor, a buck-boost converter, a fast charging protocol controller, and supports PD3.1, QC3.0, QC2.0, AFC, FCP, SCP and other mainstream fast charging protocols can be combined with a small number of components to form a 140W dual independent dual C port high power fast charging solution. Supplemented by a DC-DC chip, it can also be expanded into a 3-way independent CC+AA multi-port fast charging solution.