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公开(公告)号：US20240313629A1
公开(公告)日：2024-09-19
申请号：US18681213
申请日：2021-12-06
申请人： ZTE Corporation
发明人： Linguo WANG , Junjie ZHU , Hao WANG
CPC分类号： H02M1/0058 , H02M1/0064 , H02M3/1582
摘要： The present disclosure relates to the field of circuit design. The embodiments of the present disclosure provide a soft switch circuit, a circuit board assembly, and a switch power supply. The soft switch circuit includes a power supply, a first switch transistor, a second switch transistor, a third switch transistor, a fourth switch transistor, a capacitor, a main inductor, an auxiliary switch transistor, an auxiliary inductor, and a control unit, wherein the control unit is configured to: if the current of the main inductor is positive, turn on the auxiliary switch transistor before the first switch transistor and the fourth switch transistor are turned on; and if the current of the main inductor is negative, turn on the auxiliary switch transistor before the second switch transistor and the third switch transistor are turned on.
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公开(公告)号：US20240250618A1
公开(公告)日：2024-07-25
申请号：US18623380
申请日：2024-04-01
发明人： Hejun Zhang , Maoyong Lu , Yuqiao Hu
IPC分类号： H02M7/5387 , H02M1/00
CPC分类号： H02M7/53871 , H02M1/0009 , H02M1/0064
摘要： A power converter includes an output inductor, an output capacitor, a first current sampling circuit, a first-phase bridge arm, a second-phase bridge arm, a third-phase bridge arm, and a controller. A midpoint of the first-phase bridge arm is coupled to a first input end of the power converter. A midpoint of the second-phase bridge arm is coupled to a first end of the output capacitor and a second input end of the power converter. A midpoint of the third-phase bridge arm is coupled to a second end of the output capacitor through the output inductor. The first end is coupled to a second output end of the power converter. The second end is coupled to a first output end of the power converter.
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公开(公告)号：US20240186908A1
公开(公告)日：2024-06-06
申请号：US18519429
申请日：2023-11-27
发明人： Denghai PAN , Yuping QIU , Jiansheng CHEN
CPC分类号： H02M3/33592 , H02M1/0058 , H02M1/0064
摘要： A power supply apparatus, a three-phase transformer circuit, and a charging pile. The power supply apparatus includes a turns ratio switching circuit, a connection relationship switching circuit, a three-phase transformer, and two three-phase rectifier bridge circuits. A three-phase primary winding of the three-phase transformer is configured to receive a three-phase alternating current. A three-phase secondary winding of the three-phase transformer is configured to output a three-phase alternating current to each of the two three-phase rectifier bridge circuits. A running mode of the three-phase transformer includes a first turns ratio mode and a second turns ratio mode. The turns ratio switching circuit is configured to switch a quantity of turns of the three-phase primary winding, to switch the running mode of the three-phase transformer.
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公开(公告)号：US20240146200A1
公开(公告)日：2024-05-02
申请号：US18278194
申请日：2021-03-08
申请人： TDK CORPORATION
发明人： Masahiko HIROKAWA
CPC分类号： H02M3/33571 , H02M1/0022 , H02M1/0064 , H02M3/33592
摘要： A switching power supply apparatus includes: a pair of input terminals; a pair of output terminals; a transformer; an inverter circuit including first to fourth switching devices, a first capacitor, and a changeover switch; a rectifying and smoothing circuit including a rectifying circuit with rectifying devices and a smoothing circuit with an inductor and a second capacitor; and a driver. The first and second switching devices are coupled in series between a pair of coupling lines each coupled to corresponding one of the input terminals. The third and fourth switching devices are coupled in series between the coupling lines. The first capacitor and a primary winding are coupled in series in no particular order between a first node between the first and second switching devices and a second node between the third and fourth switching devices. The changeover switch is coupled in parallel to the first capacitor.
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公开(公告)号：US11955883B2
公开(公告)日：2024-04-09
申请号：US17692623
申请日：2022-03-11
CPC分类号： H02M3/01 , H02M1/0048 , H01F27/306 , H02M1/0064
摘要： A magnetic apparatus includes a first magnetic member, a second magnetic member, a first winding, and a second winding, where the first magnetic member includes a first magnetic cylinder, a second magnetic cylinder, a third magnetic cylinder, and at least one fourth magnetic cylinder, and where the first winding is wound around the first magnetic cylinder and the second magnetic cylinder, the second winding is wound around the first magnetic cylinder and the third magnetic cylinder, and a direction in which the first winding is wound around the second magnetic cylinder is opposite to a direction in which the second winding is wound around the third magnetic cylinder.
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公开(公告)号：US11942872B2
公开(公告)日：2024-03-26
申请号：US18164666
申请日：2023-02-06
发明人： Lei Chang , Xinwei Liu , Dongdong Yang , Hongyuan Jin
CPC分类号： H02M7/4815 , H02M1/0064 , H02M1/04 , H02M3/01 , H02M3/285 , H02M7/493 , H02M3/1584 , H02M3/1586 , H02M3/33523
摘要： The present application discloses a multi-path resonant circuit and a resonant converter. The multi-path resonant circuit includes at least two parallel N-phase resonant circuits, wherein N is an integer greater than or equal to 3. The at least two parallel N-phase resonant circuits include a first N-phase resonant circuit and a second N-phase resonant circuit. A first resonant inductor in any phase resonant circuit of the first N-phase resonant circuit is coupled with a second resonant inductor in any phase resonant circuit of the second N-phase resonant circuit. In this way, current sharing of the multi-path resonant circuit can be realized through a simpler structure.
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公开(公告)号：US11901828B2
公开(公告)日：2024-02-13
申请号：US17673768
申请日：2022-02-16
申请人： Zhejiang University
发明人： Min Chen , Ning Chen , Bodong Li , Dongbo Zhang , Xiaoqing Wang , Xinnan Sun , Zhaopei Liang
CPC分类号： H02M3/33584 , H02M3/01 , H02M3/33573 , H02M1/0064
摘要： Related to is a bidirectional CLLC circuit with a coupled inductor, which is associated with a circuit topology and operation control of a bidirectional CLLC resonant converter. Provided is a structure of a bidirectional CLLC resonant circuit with a coupled inductor, including a primary side bridge, a secondary side bridge, a primary side resonant capacitor, a secondary side resonant capacitor, a coupled resonant inductor, and a transformer. Compared with a structure of a conventional bidirectional CLLC resonant circuit, two separate resonant inductors located at a primary side and a secondary side in an original resonant cavity are replaced with one coupled resonant inductor in the circuit; the coupled resonant inductor has opposite dotted terminals with the transformer, and a primary side and a secondary side of the coupled resonant inductor are respectively in serial connection with a primary side and a secondary side of the transformer.
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公开(公告)号：US20230396180A1
公开(公告)日：2023-12-07
申请号：US18328372
申请日：2023-06-02
CPC分类号： H02M3/33592 , H01F27/38 , H02M1/0064 , H01F3/14 , H01F27/2804 , H01F2027/2819
摘要： Power converters with current doubler rectifier output stages, current doubler rectifier output stages, and integrated transformers for current doubler rectifier output stages and related output stages are described. In one example, a power converter includes a switched bridged input stage and a current doubler rectifier output stage comprising an integrated transformer. The integrated transformer of the current doubler rectifier output stage includes magnetic cores. A primary winding and a secondary winding of the integrated transformer extend around each of the plurality of magnetic cores, and the integrated transformer further includes a coupling winding that extends around each of the plurality of magnetic cores to provide magnetic integration among the plurality of magnetic cores through an electrical coupling. The current doubler rectifier output stage relies upon magnetizing inductance of the integrated transformer to realize the function of inductors, and the integrated transformer current doubler rectifier does not include separate inductors.
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公开(公告)号：US20230387804A1
公开(公告)日：2023-11-30
申请号：US18105131
申请日：2023-02-02
发明人： Chen kong TEH , Te BI
CPC分类号： H02M3/1584 , H02M1/143 , H02M1/0064
摘要： A DCDC circuit according to an embodiment includes a capacitor network, and a smoothing capacitor. The capacitor network includes a first state in which first capacitors are connected onto a wiring path between an input node to which an input voltage is applied and one end of a first coil and a second capacitor is connected between a connection point of the first capacitors on the wiring path and a reference potential point, and a second state in which the second capacitor is connected to one end of a second coil and the first capacitors are connected between one end of the second capacitor and the reference potential point and between the other end of the second capacitor and the reference potential point, respectively.
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公开(公告)号：US11824457B2
公开(公告)日：2023-11-21
申请号：US17709049
申请日：2022-03-30
发明人： Da Jin , Yang Leng , Litao Qian , Zhongwang Yang
CPC分类号： H02M3/33576 , H02M1/0064
摘要： A power conversion module is disclosed. The power conversion module includes a power conversion module includes a circuit board and a first basic power unit. The first basic power unit is disposed on the circuit board and includes a magnetic device, a primary switch circuit, a first secondary rectifying circuit and a first positive output terminal pin. The primary switch circuit, the first secondary rectifying circuit, the magnetic device and the first positive output terminal pin are sequentially arranged on the circuit board along a first direction.
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