Patent ID: 11909322
Assignee: WUXI SI-POWER MICRO-ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 3:
4. A power conversion circuit adopting the isolation type power conversion method based on demagnetization iteration control according to claim 3, characterized by comprising:
a high-frequency transformer circuit used for voltage conversion transmission in the power conversion conversion, wherein the high-frequency transformer circuit comprises the high-frequency transformer, the primary side of the high-frequency transformer is electrically connected with the primary side power tube comprised in the power switch tube circuit, the secondary side of the high-frequency transformer is electrically connected with the charging capacitor circuit and the output feedback circuit through the secondary side synchronous rectifier tube, the charging capacitor circuit comprises the secondary side power supply capacitor, one end of the secondary side power supply capacitor is electrically connected to a secondary side positive output end of the high-frequency transformer in the excitation stage, the other end of the secondary side power supply capacitor is electrically connected to the negative electrode of a secondary side load output end in the demagnetization stage, the charging capacitor circuit further comprises the output capacitor connected across the secondary side load output end, the output feedback circuit comprises a voltage division resistor RFB1 and a voltage division resistor RFB2 that are connected in series and are connected across the secondary side load output end, and the primary side and the secondary side of the high-frequency transformer are electrically connected with a power conversion integrated control chip.