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公开(公告)号：US20240322701A1
公开(公告)日：2024-09-26
申请号：US18341139
申请日：2023-06-26
Applicant: DELTA ELECTRONICS, INC.
Inventor： Lin-Ya TSAI , Chien-An LAI
CPC classification number: H02M3/33592 , H02M1/0022 , H02M3/015
Abstract: A synchronous rectification control method for a resonant power supply includes steps as follows. First, setting an initial conduction width of a synchronous rectification switch, which is less than a maximum conduction width. Afterward, detecting a voltage waveform across two ends of a body diode of the synchronous rectification switch. Afterward, calculating a resonant frequency according to the voltage waveform. Finally, determining the maximum conduction width of the synchronous rectification switch.
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