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公开(公告)号：US10008950B2
公开(公告)日：2018-06-26
申请号：US15790943
申请日：2017-10-23
发明人： Hangseok Choi , Lei Chen , Cheng-Sung Chen
CPC分类号： H02M3/33592 , H02M1/08 , H02M2001/0009 , H02M2001/0032 , H02M2001/0048 , Y02B70/1475 , Y02B70/1491 , Y02B70/16
摘要： A switching converter includes a synchronous rectifier and a synchronous rectifier driver that controls conduction of the synchronous rectifier. The synchronous rectifier driver turns OFF the synchronous rectifier in response to a turn-off trigger. The synchronous rectifier driver prevents the turn-off trigger from turning OFF the synchronous rectifier during a turn-off trigger blanking time that is adaptively set based on a conduction time of the synchronous rectifier.
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公开(公告)号：US09825548B2
公开(公告)日：2017-11-21
申请号：US15358424
申请日：2016-11-22
发明人： Hangseok Choi , Lei Chen , Cheng-Sung Chen
CPC分类号： H02M3/33592 , H02M1/08 , H02M2001/0009 , H02M2001/0032 , H02M2001/0048 , Y02B70/1475 , Y02B70/1491 , Y02B70/16
摘要： A switching converter includes a synchronous rectifier and a synchronous rectifier driver that controls conduction of the synchronous rectifier. The synchronous rectifier driver turns OFF the synchronous rectifier in response to a turn-off trigger. The synchronous rectifier driver prevents the turn-off trigger from turning OFF the synchronous rectifier during a turn-off trigger blanking time that is adaptively set based on a conduction time of the synchronous rectifier.
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公开(公告)号：US10038385B2
公开(公告)日：2018-07-31
申请号：US15471666
申请日：2017-03-28
发明人： Lei Chen , Chih-Hsien Hsieh , Yue-Hong Tang
CPC分类号： H02M3/33515 , H02M1/08 , H02M3/33523 , H02M2001/0009
摘要： In one embodiment, a power supply controller, or alternately a semiconductor device having a power supply controller, may have a circuit configured configuring the PWM circuit to form a first signal having a value formed to be representative of a peak value of a primary current through the power switch and having a duration that is representative of a time interval that a secondary current is flowing through a secondary winding wherein the peak value is the peak value during an on-time of the power switch, and configured to form a current having a value that is representative of an average value of the secondary current.
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公开(公告)号：US10027235B2
公开(公告)日：2018-07-17
申请号：US15358703
申请日：2016-11-22
发明人： Hangseok Choi , Lei Chen , Cheng-Sung Chen
摘要： A flyback converter includes a primary-side switch that controls conduction of current on a primary side of a transformer and a synchronous rectifier on a secondary side of the transformer. A synchronous rectifier driver controls the conduction of the synchronous rectifier by adaptively adjusting a turn-off threshold of the synchronous rectifier.
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