Intelligent charging system principle block diagram (TOP225Y)

Relevant key device information applied in this article: The charging circuit of the TOP225Y intelligent charging system is a power circuit composed of a new type of single-chip power chip TOP225Y. This chip is a three-terminal isolated pulse width modulation monolithic switching power supply integrated circuit produced by Powergration Company in the United States. It integrates PWM integrated circuit and FET in the same chip and has all the functions required by PWM type switching regulated power supply. The high-frequency transformer is used to completely isolate the output end from the power grid, realizing the integration of a single-chip switching power supply without industrial frequency transformer isolation. The entire loop has the advantages of large output power range, low cost, high degree of integration, and simple circuit design. Overall program flow chart of the system: