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

Claim 8:
9. The synchronous rectification control circuit according to claim 1, further comprising a light-load detection circuit,
wherein the light-load detection circuit has an input terminal coupled to the second terminal of the sampling circuit, and a first output terminal coupled to the third input terminal of the turn-on comparison circuit, the fourth input terminal of the anti-accidental turn-on circuit, and the second input terminal of the turn-off comparison circuit, and is configured to determine whether to generate a light-load signal to the turn-on comparison circuit, the anti-accidental turn-on circuit and the turn-off comparison circuit based on a switching frequency of the sampling voltage; and
the turn-on comparison circuit, the anti-accidental turn-on circuit and the turn-off comparison circuit enter a dormant state after receiving the light-load signal.