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 1:
2. The isolation type power conversion method based on demagnetization iteration control according to claim 1, characterized in that
the adaptive turn-on time control circuit comprises a voltage division circuit that is electrically connected with a primary side bus voltage VIN, and a first voltage-controlled current source circuit that is electrically connected with the voltage division circuit, wherein the first voltage-controlled current source circuit generates a bias current in direct proportion to a magnitude of the primary side bus voltage VIN, the first voltage-controlled current source circuit is electrically connected with one end of a first capacitor, one end of a first switch and a positive input end of a second comparator, the first switch is controlled by a first one-shot circuit, the first one-shot circuit is electrically connected with a trigger output end of the one-out-of-two selector in the primary side control circuit, a negative input end of the second comparator is electrically connected with a positive electrode of a first reference voltage source, an other end of the first capacitor, an other end of the first switch, a negative electrode of the first reference voltage source and a negative electrode of the primary side bus voltage VIN share a common ground; an output end of the second comparator is electrically connected with an input end of a phase inverter, and an output end of the phase inverter is electrically connected with a trigger end of the primary side power tube.