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公开(公告)号：US20230223832A1
公开(公告)日：2023-07-13
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： H02M1/0095 , H02M3/07 , H02M3/01 , H02M3/33584
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：US11488764B2
公开(公告)日：2022-11-01
申请号：US16591062
申请日：2019-10-02
发明人： Yahong Xiong , Da Jin , Qinghua Su
IPC分类号： H05K1/18 , H01F27/28 , G05F1/575 , H01F27/02 , H01F27/29 , G06F1/18 , H01F17/04 , H05K1/02 , H05K1/16 , H05K7/14 , H05K7/20 , H01L25/16 , H01R12/52 , H01R12/58 , H02M3/158 , H05K1/11 , H01F17/06 , H02M3/00
摘要： A voltage regulator module includes a first circuit board assembly and a magnetic core assembly. The first circuit board assembly includes a first printed circuit board, a plurality of switch elements and a first molding compound layer. The switch elements are mounted on a first surface of the first printed circuit board. The first molding compound layer is formed on the first surface of the first printed circuit board to encapsulate the switch elements. The magnetic core assembly is arranged beside a second surface of the first printed circuit board, and includes a magnetic core portion and at least one first U-shaped copper structure. The magnetic core portion includes a plurality of openings. Each first U-shaped copper structure is penetrated through two corresponding openings to define two inductors. A first terminal of each inductor and the corresponding switch element are connected in series to define a phase circuit.
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公开(公告)号：US20220294339A1
公开(公告)日：2022-09-15
申请号：US17588026
申请日：2022-01-28
发明人： Yahong Xiong , Junguo Cui , Litao Qian , Qinghua Su
摘要： A magnetic device includes a magnetic core assembly, a first winding and a second winding. The magnetic core assembly includes four magnetic legs and two winding grooves. An input terminal of the first winding is disposed within a first part of the first winding groove between the first magnetic leg and the second magnetic leg. An output terminal of the first winding is disposed within a second part of the second winding groove between the third magnetic leg and the fourth magnetic leg. An input terminal of the second winding is disposed within a first part of the second winding groove between the first magnetic leg and the fourth magnetic leg. An output terminal of the second winding is disposed within a second part of the first winding groove between the second magnetic leg and the third magnetic leg.
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公开(公告)号：US20220141960A1
公开(公告)日：2022-05-05
申请号：US17575562
申请日：2022-01-13
发明人： Da Jin , Yahong Xiong , Qinghua Su
IPC分类号： H05K1/18 , H02M3/04 , H05K1/11 , H05K1/14 , H01F27/24 , H01F27/28 , H02M3/28 , H02M7/00 , H02M7/217 , H02M3/158
摘要： A voltage regulator module includes a circuit board, a first component and a switching circuit assembly. The circuit board includes a first surface, a second surface, a concave structure and a contact pad. The first surface and the second surface are opposed to each other. The concave structure is disposed in the circuit board and concavely formed on the second surface. The contact pad is formed on the second surface and served as at least one of a positive output terminal, a negative output terminal and a positive input terminal. The concave structure and the contact pad are misaligned to each other. The first component is at least partly disposed within the concave structure. The switching circuit assembly is disposed on the first surface and electrically connected with the contact pad and the first component.
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公开(公告)号：US11205958B2
公开(公告)日：2021-12-21
申请号：US17023006
申请日：2020-09-16
发明人： Da Jin , Yahong Xiong , Qinghua Su
摘要： A power conversion system including a power conversion unit, a power circuit and a precharge circuit is provided. The power conversion circuit includes an input port, an output port, switching power conversion units and at least one storage device. The storage device is connected between the input and output ports in series. The power circuit is electrically connected to the power conversion circuit for receiving the input voltage and outputting a supply voltage to the power conversion circuit, and the power circuit includes a magnetic element. The precharge circuit precharges the storage device. The precharge circuit includes a winding and a rectifier filter circuit connected to each other. The winding is coupled to the magnetic element for receiving a conversion voltage. The rectifier filter circuit is electrically connected to the storage device so as to receive the conversion voltage and output a charge voltage to the corresponding storage device.
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公开(公告)号：US11160167B2
公开(公告)日：2021-10-26
申请号：US16887791
申请日：2020-05-29
发明人： Da Jin , Xueliang Chang , Yahong Xiong , Qinghua Su
IPC分类号： H02M3/158 , H01F27/24 , H05K1/18 , H02M3/04 , H05K1/11 , H05K1/14 , H01F27/28 , H02M3/28 , H02M7/00 , H02M7/217
摘要： A voltage regulator module includes a circuit board assembly and a magnetic core assembly. The circuit board assembly includes a circuit board and 2N switching circuits. The circuit board includes a plurality of conductive structures. The magnetic core assembly includes an upper core, a lower core and 2N lateral legs. The 2N lateral legs are arranged between the upper core and the lower core. The 2N lateral legs are penetrated through the corresponding conductive structures. The 2N switching circuits are divided into N switching circuit groups. Each switching circuit group includes two parallel-connected switching circuits. The N switching circuit groups and the magnetic core assembly are arranged on the circuit board along a first direction. The N switching circuit groups are arranged one the circuit board along a second direction.
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公开(公告)号：US20210280354A1
公开(公告)日：2021-09-09
申请号：US17330270
申请日：2021-05-25
发明人： Yahong Xiong , Da Jin , Qinghua Su
IPC分类号： H01F27/28 , G05F1/575 , H01F27/02 , H01F27/29 , G06F1/18 , H01F17/04 , H05K1/02 , H05K1/16 , H05K1/18 , H05K7/14 , H05K7/20 , H01L25/16 , H01R12/52 , H01R12/58 , H02M3/158 , H05K1/11
摘要： A power module comprises a first circuit board assembly and a magnetic core assembly. The first circuit board assembly comprises a first printed circuit board and at least two switch circuits disposed on the first printed circuit board. The magnetic core assembly is disposed near the first printed circuit board and comprises a magnetic core portion and at least one pair of first electrical conductors. The magnetic core portion comprises at least one core unit, the core unit comprises a pair of holes and a second magnetic overlapping region, and the pair of holes are separated by the second magnetic overlapping region. Each pair of the first electrical conductors is penetrated through the corresponding pair of holes of the magnetic core portion to define two output inductors. Each of the switch circuits is electrically connected with the corresponding output inductor to define a phase circuit of the power module.
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公开(公告)号：US11088611B2
公开(公告)日：2021-08-10
申请号：US16745128
申请日：2020-01-16
发明人： Da Jin , Yahong Xiong , Qinghua Su
摘要： A power converter includes a first positive terminal, a first negative terminal, a second positive terminal, a second negative terminal, a first capacitor and N phase conversion circuits. The first capacitor is connected between the second positive terminal and the second negative terminal. Each phase conversion circuit includes a first main switch, a second main switch, a second capacitor, a freewheeling switch, an inductor and a bridge arm circuit. The first main switch is electrically connected with the first positive terminal. The second capacitor is electrically connected with the first main switch and the second main switch. The freewheeling switch is electrically connected between the second main switch and the second negative terminal. The inductor is electrically connected with the second main switch. The second main switch is also electrically connected with the first main switch of an adjacent phase conversion circuit.
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公开(公告)号：US20210083584A1
公开(公告)日：2021-03-18
申请号：US17022983
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, a bootstrap circuit and at least N driving circuits, where N is an integer larger than 1. The power conversion circuit includes an input port, an output port, N switching power conversion units and N nodes. The switching power conversion unit includes a first switch and a second switch. The bootstrap circuit includes N bootstrap capacitors and N bootstrap switches. The N bootstrap switches are serially connected in sequence. Two ends of the bootstrap capacitor are connected to the corresponding node and the second terminal of the corresponding bootstrap switch respectively. The first terminal of the (N)th bootstrap switch receives a supply voltage. The driving circuit is connected to the corresponding bootstrap capacitor and outputs driving signals for controlling the switches according to the positive electrode voltage of the bootstrap capacitor.
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公开(公告)号：US20210082615A1
公开(公告)日：2021-03-18
申请号：US17023119
申请日：2020-09-16
发明人： Da Jin , Xueliang Chang , Yahong Xiong , Qinghua Su
摘要： A power conversion system and a magnetic component thereof are provided. The magnetic component includes a magnetic core assembly, two windings and an air gap. The magnetic core assembly includes two substrates, four winding pillars and an auxiliary pillar unit. The four winding pillars and the auxiliary pillar unit are located between the two substrates. A connecting line of centers of the winding pillars forms a quadrangle which has a first diagonal line and a second diagonal line. One winding is wound around two winding pillars on the first diagonal line, and magnetic fluxes on these two winding pillars have the same direction and amount. The other winding is wound around the other two winding pillars located on the second diagonal line, and magnetic fluxes on these two winding pillars have the same direction and amount. The directions of the magnetic fluxes on the two neighboring winding pillars are opposite.
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