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公开(公告)号：US20210083658A1
公开(公告)日：2021-03-18
申请号：US17022939
申请日：2020-09-16
发明人： Da Jin , Yahong Xiong , Qinghua Su
摘要： A power conversion system is provided. The power conversion system includes a power conversion circuit and N clamping circuits. The power conversion circuit includes an input port, an output port, N switching power conversion units and N−1 storage device. The switching power conversion unit includes a first switch and a second switch. N is an integer larger than 1. Two ends of the storage device have a first node and a second node respectively. The clamping circuit includes an absorbing capacitor and an absorbing diode and has a first terminal, a second terminal and a third terminal. The first and second terminals are electrically connected to two ends of the corresponding second switch respectively. The absorbing capacitor and the absorbing diode are serially coupled between the first and second terminals for absorbing a peak voltage. The third terminal is electrically connected to the corresponding first node or the input port.
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公开(公告)号：US20210075323A1
公开(公告)日：2021-03-11
申请号：US17014446
申请日：2020-09-08
发明人： Da Jin , Yahong Xiong , Yingjun Li , Qinghua Su
摘要： A power conversion system is provided. The power conversion system includes N power conversion circuits. Each power conversion circuit includes an input, an output, two switching power conversion units and at least one resonant capacitor. The input and output are configured to receive an input voltage and output an output voltage respectively. Each switching power conversion unit includes a plurality of switches and a winding. The plurality of switches operates periodically according to a switching period. A dotted terminal of one winding is electrically coupled to an undotted terminal of the other winding. The two windings are magnetically coupled to each other to form a transformer. In one switching period, the resonant capacitor stores an energy or outputs the stored energy as the corresponding switch is turned on or off. A resonance is generated between the resonant capacitor and inductor with a resonant frequency and a resonant period.
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公开(公告)号：US20200187380A1
公开(公告)日：2020-06-11
申请号：US16690444
申请日：2019-11-21
发明人： Wenhua Li , Xueliang Chang , Yahong Xiong , Qinghua Su
摘要： The present disclosure provides a power module including a circuit board, a first heat-generating component and a second heat-generating component. The circuit board includes a first side and a second side opposite to each other and includes a first plane and second plane disposed on the first side. A first height difference is formed between the first plane and the second plane. The first heat-generating component and the second heat-generating component are disposed on the first plane and the second plane, respectively. The first heat-generating component and the second heat-generating component include a first contact surface and a second contact surface, respectively. The first contact surface and the second contact surface are located at a first collaborative plane of the power module. It benefits to reduce the design complexity of a heat sink, and enhance the heat dissipation capability and the overall power density of the power module simultaneously.
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公开(公告)号：US20240194390A1
公开(公告)日：2024-06-13
申请号：US18444674
申请日：2024-02-17
发明人： Yahong Xiong , Da Jin , Qinghua Su
IPC分类号： H01F27/28 , G05F1/575 , G06F1/18 , H01F17/04 , H01F17/06 , H01F27/02 , H01F27/24 , H01F27/29 , H01L25/16 , H01R12/52 , H01R12/58 , H02M3/00 , H02M3/158 , H05K1/02 , H05K1/11 , H05K1/14 , H05K1/16 , H05K1/18 , H05K3/28 , H05K7/14 , H05K7/20
CPC分类号： H01F27/2804 , G05F1/575 , G06F1/183 , H01F17/04 , H01F17/06 , H01F27/02 , H01F27/24 , H01F27/292 , H01L25/16 , H01R12/52 , H01R12/58 , H02M3/003 , H02M3/1584 , H05K1/0203 , H05K1/111 , H05K1/117 , H05K1/145 , H05K1/165 , H05K1/181 , H05K1/186 , H05K3/284 , H05K7/1427 , H05K7/2089 , H05K2201/10015 , H05K2201/1003 , H05K2201/10053 , H05K2201/10166 , H05K2201/10522 , H05K2201/10636 , H05K2201/10734 , H05K2201/10984
摘要： An apparatus includes a heat-dissipating substrate, a power circuit and a magnetic assembly. The heat-dissipating substrate includes a thermal contact surface. The power circuit includes at least one switch element in contact with the thermal contact surface of the heat-dissipating substrate. The magnetic assembly includes at least one first electrical conductor and a magnetic core module comprising at least one hole, wherein the at least one first electrical conductor passes through the at least one hole, and a terminal of the at least one first electrical conductor is electrically connected to the at least one switch element. The heat-dissipating substrate, the power circuit and the magnetic assembly are arranged in sequence along a same direction. A projection of the power circuit on the thermal contact surface partially overlaps a projection of the magnetic assembly on the thermal contact surface.
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公开(公告)号：US20240096543A1
公开(公告)日：2024-03-21
申请号：US18389120
申请日：2023-11-13
发明人： Yahong Xiong , Da Jin , Qinghua Su
IPC分类号： H01F27/28 , G05F1/575 , G06F1/18 , H01F17/04 , H01F17/06 , H01F27/02 , H01F27/24 , H01F27/29 , H01L25/16 , H01R12/52 , H01R12/58 , H02M3/00 , H02M3/158 , H05K1/02 , H05K1/11 , H05K1/14 , H05K1/16 , H05K1/18 , H05K3/28 , H05K7/14 , H05K7/20
CPC分类号： H01F27/2804 , G05F1/575 , G06F1/183 , H01F17/04 , H01F17/06 , H01F27/02 , H01F27/24 , H01F27/292 , H01L25/16 , H01R12/52 , H01R12/58 , H02M3/003 , H02M3/1584 , H05K1/0203 , H05K1/111 , H05K1/117 , H05K1/145 , H05K1/165 , H05K1/181 , H05K1/186 , H05K3/284 , H05K7/1427 , H05K7/2089 , H05K2201/10015 , H05K2201/1003 , H05K2201/10053 , H05K2201/10166 , H05K2201/10522 , H05K2201/10636 , H05K2201/10734 , H05K2201/10984
摘要： A power system includes a power module, an electronic load and a system board. The power module includes a first surface, a second surface, a switch and a plurality of conductive parts, wherein the switch is disposed on the first surface of the power module and the plurality of conductive parts are disposed on the second surface of the power module. The electronic load includes a plurality of conductive parts. The power module and the electronic load are disposed on two opposite sides of the system board, the power module delivers power to the electronic load through the system board, and gaps and networks of the plurality of conductive parts of the power module correspond to those of the plurality of conductive parts of the electronic load.
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公开(公告)号：US11894777B2
公开(公告)日：2024-02-06
申请号：US18122963
申请日：2023-03-17
发明人： Da Jin , Yahong Xiong , Qinghua Su , Zhongwang Yang
CPC分类号： H02M3/33584 , H02M3/01 , H02M3/07 , H02M3/158 , H02M1/0003 , H02M1/0095 , H02M3/1584 , H02M3/33569
摘要： A power conversion circuit includes a first terminal, a second terminal, a first switching conversion unit, a second switching conversion unit, a flying capacitor and a magnetic element. The first switching conversion unit includes a first switch and a third switch. The second switching conversion unit includes a second switch and a fourth switch. The magnetic element includes two first windings and a second winding. A first one of the two first windings is serially connected between the flying capacitor and the second terminal. A second one of the two first windings is serially connected between the second switch and the second terminal. The second winding is serially connected with the flying capacitor and the first one of the two first windings. A turn ratio between the second winding, the first one of the two first windings and the second one of the two first windings is N:1:1.
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公开(公告)号：US11831238B2
公开(公告)日：2023-11-28
申请号：US17744443
申请日：2022-05-13
发明人： Zhengyu Ye , Xueliang Chang , Qinghua Su
CPC分类号： H02M3/07 , G05F3/16 , H02M3/33523 , H02M1/0058
摘要： A power conversion system includes a power conversion circuit and a start circuit. The power conversion circuit includes a first terminal, a second terminal, an output capacitor, at least one switch unit, a flying capacitor and a magnetic element. The flying capacitor is connected between the first terminal and the second terminal. The output capacitor is electrically connected with the first terminal or the second terminal. The start circuit is configured to control the power conversion circuit to pre-charge. A first terminal of the start circuit is electrically connected with the first terminal, and a second terminal of the start circuit is electrically connected with the second terminal. During a start process of the power conversion circuit, the at least one flying capacitor and the output capacitor are pre-charged by the start circuit.
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公开(公告)号：US11784560B2
公开(公告)日：2023-10-10
申请号：US17842629
申请日：2022-06-16
发明人： Da Jin , Yahong Xiong , Litao Qian , Qinghua Su
CPC分类号： H02M3/015 , H02M1/0095 , H02M3/07 , H02M3/1584 , H02M3/003 , H02M3/01 , H02M3/33569
摘要： A power conversion circuit includes an input positive terminal, an input negative terminal, an output positive terminal, an output negative terminal, a first switch bridge arm, a first resonant branch, a capacitor branch, an output inductor unit and an output capacitor. The input negative terminal is electrically connected with the output negative terminal. The first switch bridge arm is electrically connected between the input positive terminal and the input negative terminal. The first switch bridge arm includes a first switch, a second switch, a third switch and a fourth switch. The first switch and the second switch are electrically connected with a first node. The second switch and the third switch are electrically connected with a second node. The third switch and the fourth switch are electrically connected with a third node. The first resonant branch is electrically connected between the first node and the third node.
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公开(公告)号：US20230268820A1
公开(公告)日：2023-08-24
申请号：US18086481
申请日：2022-12-21
发明人： Da Jin , Yahong Xiong , Qinghua Su
CPC分类号： H02M1/0054 , H02M3/07
摘要： The present disclosure provides a power converter including an input capacitor, an input switch, first and second bridge arms, first and second storage capacitors, two output inductors and an output capacitor. The first and second bridge arms are connected in parallel between a second terminal of the input switch and the ground terminal. The first bridge arm includes three switches connected in series and has first upper and lower nodes therebetween. The second bridge arm includes three switches connected in series and has second upper and lower nodes therebetween. The first storage capacitor is coupled between the first upper node and the second lower node. The second storage capacitor is coupled between the second upper node and the first lower node. The input switch is configured to block a rush current between the input capacitor and the first storage capacitor and/or the second storage capacitor.
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公开(公告)号：US20230187115A1
公开(公告)日：2023-06-15
申请号：US18071879
申请日：2022-11-30
发明人： Da Jin , Yahong Xiong , Litao Qian , Qinghua Su
摘要： A magnetic device includes a magnetic core assembly and a winding assembly. The magnetic core assembly includes a first magnetic cover, a second magnetic cover and a plurality of magnetic legs. The second magnetic cover has a perforation. The plurality of magnetic legs are disposed between the first magnetic cover and the second magnetic cover. A middle region is defined by the plurality of magnetic legs, the first magnetic cover and the second magnetic cover. The middle region is in communication with the perforation. The middle region includes a plurality of communication portions. The winding assembly includes at least one coupled winding pair. In addition, two coupled windings of each coupled winding pair are respectively transferred through two different communication portions, and portions of the two coupled windings of each coupled winding pair are penetrated through the perforation of the second magnetic cover.
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