Patent ID: 11870362
Assignee: WUXI CHIPOWN MICROELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. The synchronous rectification control circuit according to claim 4, wherein the anti-accidental turn-on circuit comprises a second-stage sub-circuit, a first voltage dividing resistor, a second voltage dividing resistor, a third voltage dividing resistor, a fourth voltage dividing resistor, and OR gate circuit,
wherein the first voltage dividing resistor has a first terminal coupled to the second input terminal of the anti-accidental turn-on circuit, and a second terminal coupled to the first input terminal of the second stage sub-circuit, and a first terminal of the second voltage dividing resistor;
the second voltage dividing resistor has a second terminal grounded;
the third voltage dividing resistor has a first terminal coupled to the third input terminal of the anti-accidental turn-on circuit, and a second terminal coupled to a first terminal of the fourth voltage dividing resistor, wherein a voltage at the second terminal of the third voltage dividing resistor is a first dividing voltage;
the fourth voltage dividing resistor has a second terminal grounded;
the second-stage sub-circuit has a second input terminal provided with the first dividing voltage, and an output terminal coupled to a second input terminal of the OR gate circuit; and
the OR gate circuit has a first input terminal coupled to the output terminal of the second-stage sub-circuit, and an output terminal coupled to the output terminal of the anti-accidental turn-on circuit.