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公开(公告)号：US11463013B2
公开(公告)日：2022-10-04
申请号：US17170552
申请日：2021-02-08
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Da Jin , Kunpeng Wang , Shuailin Du , Kai Dong
Abstract: A magnetic element, a power module and a power conversion system are provided. The magnetic element includes a main body, a plurality of first magnetic posts, a first common magnetic post and a second magnetic post. A first lateral edge and a second lateral edge of the main body are opposite to each other and extended along a first direction. A third lateral edge and a fourth lateral edge of the main body are opposite to each other and extended along a second direction. The plurality of first magnetic posts are disposed on the main body and arranged along the first direction. The first common magnetic post is disposed on the main body and located at the first magnetic posts. The second magnetic post is disposed on the main body and located at the first common magnetic post.
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公开(公告)号：US11462994B2
公开(公告)日：2022-10-04
申请号：US17152882
申请日：2021-01-20
Inventor： Kai Dong , Dehong Xu , Jinfa Zhang
Abstract: A control method for a power factor correction circuit is disclosed. The power factor correction circuit includes a first bridge arm, a second bridge arm, an output capacitor and an active clamp unit. The control method includes steps of providing a first driving waveform to control a main switch, providing a second driving waveform to control an auxiliary switch, and providing a third driving signal to control a fifth switch. A first delay time is between the turning-off time point of the third driving signal and the turning-on time point of the first driving waveform, a second delay time is between the turning-on time point of the first driving waveform and the turning-off time point of the second driving waveform, and a third delay time is between the turning-off time point of the second driving waveform and the turning-on time point of the third driving signal.
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