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公开(公告)号：US20230179094A1
公开(公告)日：2023-06-08
申请号：US17987701
申请日：2022-11-15
发明人： Da Jin , Yahong Xiong , Litao Qian , Qinghua Su
摘要： A power conversion circuit is provided. In the power conversion circuit, a three-switch unit of a switch bridge arm includes first, second and third terminals and upper, middle and lower switches serially connected between the first and third terminals sequentially. The upper and lower switches are turned on and off synchronously. A grounding switch is coupled between the third terminal and a negative input terminal. A cross-connected storage capacitor is electrically connected between a node between the upper and middle switches and the third terminal. A diode, a capacitor and a driving unit of a floating driving circuit are electrically connected between the upper and lower switches. A connection node between the diode and the capacitor is electrically connected to a driving terminal of the upper switch. A connection node between the capacitor and the driving unit is electrically connected to a driving terminal of the lower switch.
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公开(公告)号：US11469674B2
公开(公告)日：2022-10-11
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：US20220255449A1
公开(公告)日：2022-08-11
申请号：US17731261
申请日：2022-04-28
发明人： Da Jin , Yahong Xiong , Qinghua Su
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：US20220209684A1
公开(公告)日：2022-06-30
申请号：US17553902
申请日：2021-12-17
发明人： Da Jin , Yahong Xiong , Qinghua Su
IPC分类号： H02M7/53846 , H02M1/00 , H02M3/335
摘要： The present disclosure provides a control method of a power conversion device including first and second bridge arms and two transformers. The first bridge arm includes the first, second and third switches serially connected. The second bridge arm includes the fourth, fifth and sixth switches serially connected. The control method includes: controlling the first and fourth switches to operate with duty cycle and being 180 degrees out of phase; controlling control signals of the third and fourth switches to be complementary, and controlling control signals of the sixth and first switches to be complementary; when the duty cycle being less than or equal to 0.5, controlling the second and fourth switches to switch synchronously, controlling the fifth and first switches to switch synchronously; and when the duty cycle being greater than 0.5, controlling the second and sixth switches to switch synchronously, controlling the fifth and third switches to switch synchronously.
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公开(公告)号：US20220172881A1
公开(公告)日：2022-06-02
申请号：US17672192
申请日：2022-02-15
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： 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：US11329569B2
公开(公告)日：2022-05-10
申请号：US17133061
申请日：2020-12-23
发明人： Da Jin , Yahong Xiong , Qinghua Su
摘要： A power conversion system includes a power conversion circuit and a start-up circuit. The power conversion circuit includes an output capacitor, a first switching unit, a second switching unit, a flying capacitor and a magnetic element. The second switching unit includes two switch groups. The flying capacitor is connected between a first terminal and a second terminal of the power conversion circuit. The magnetic element includes two first windings that are electromagnetically coupled with each other. A first one of the two first windings is electrically connected between one switch group and the second terminal of the power conversion circuit. A second one of the two first windings is electrically connected between the other switch group and the second terminal of the power conversion circuit. The start-up circuit includes a third winding and an inductor. The third winding is electromagnetically coupled with the first windings.
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公开(公告)号：US20220078916A1
公开(公告)日：2022-03-10
申请号：US17530790
申请日：2021-11-19
发明人： Yahong Xiong , Shaojun Chen , Da Jin , Qinghua Su
摘要： A voltage regulator module is provided. The switch circuit assembly includes two switch circuits and an input capacitor. Respective input terminals of the two switch circuits are connected with each other in parallel. The input capacitor is electrically connected with the respective input terminals of the two switch circuits in parallel and disposed between the two switch circuits. The plurality of conductive members have a first conductive member, a second conductive member and a third conductive member. The first conductive member and the third conductive member are configured to deliver an electric energy. The second conductive member is configured to deliver a signal. One end of each conductive member is electrically connected with corresponding switch circuit, and the other end of the first conductive member and the third conductive member is electrically connected with the load. The switch circuit assembly and the magnetic assembly are stacked with each other.
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公开(公告)号：US20220007509A1
公开(公告)日：2022-01-06
申请号：US17476019
申请日：2021-09-15
发明人： Da Jin , Xueliang Chang , 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 positive input terminal, a negative input terminal, a positive output terminal, a negative output terminal, a switching circuit, a magnetic element and an input capacitor. The switching circuit is disposed on a top surface of the circuit board, and comprises two switches connected in series to form a midpoint, wherein the switching circuit is connected to the positive input terminal. The magnetic element comprises a magnetic core and a conductive structure in the circuit board, wherein the magnetic element and the switching circuit are arranged on the circuit board along a first direction, the conductive structure is connected to the midpoint of the corresponding switching circuit and the positive output terminal. The input capacitor is connected to the positive input terminal and the negative input terminal, and disposed on a bottom surface of the circuit board.
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公开(公告)号：US11166373B2
公开(公告)日：2021-11-02
申请号：US16591361
申请日：2019-10-02
发明人： Yahong Xiong , Da Jin , Qinghua Su
摘要： A voltage regulator module includes a first circuit board assembly and a signal communication part. The first circuit board assembly includes a plurality of first conduction pads. The signal communication part is arranged on the first circuit board assembly. The signal communication part includes a conduction circuit board with a plurality of conduction fingers and a plurality of surface pins. The plurality of conduction fingers are formed on at least one lateral side of the conduction circuit board. The plurality of surface pins are electroplated on a top side and a bottom side of the conduction circuit board. A first end of each conduction finger is contacted with the corresponding surface pin on the top side. A second end of each conduction finger is contacted with the corresponding surface pin on the bottom side. The signal communication part is fixed on and electrically connected with the first circuit board assembly.
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公开(公告)号：US20210272737A1
公开(公告)日：2021-09-02
申请号：US17167329
申请日：2021-02-04
发明人： Da Jin , Yang Leng , Zhongwang Yang , Qinghua Su
摘要： A magnetic assembly includes a magnetic core, four primary windings and four secondary windings. The magnetic core includes four lateral legs. The four primary windings and the corresponding secondary windings are magnetically coupled with each other, and the four primary windings and the corresponding secondary windings are wound on the corresponding lateral legs. The winding directions of the four secondary windings on the corresponding lateral legs are identical. A phase difference between a magnetic flux flowing through a specified lateral leg of the four lateral legs and a magnetic flux flowing through an adjacent lateral leg is any value in the range between 150 degrees and 210 degrees. A phase difference between the magnetic flux flowing through the specified lateral leg and the magnetic flux flowing through another adjacent lateral leg is any value in the range between 60 degrees and 120 degrees.
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