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公开(公告)号：US12132385B2
公开(公告)日：2024-10-29
申请号：US17868954
申请日：2022-07-20
发明人： Chaojun Chen , Jian Deng , Jin Jin
CPC分类号： H02M1/0019 , H02M1/0025 , H02M1/0045 , H02M3/015
摘要： A control circuit for a resonant converter, can include: a feedforward circuit configured to generate a feedforward current; a charge feedback circuit configured to receive a resonant current sampling signal representing a resonant current of the resonant converter in a first mode to generate a charge feedback signal, and to receive the resonant current sampling signal and the feedforward current together to generate the charge feedback signal in a second mode; and a driving control circuit configured to generate driving signals according to the charge feedback signal and a first threshold signal, in order to control switching states of power transistors of the resonant converter, where the first threshold signal is generated according to an error compensation signal representing an error information between a feedback signal of an output signal of the resonant converter and a reference signal.
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公开(公告)号：US12082506B2
公开(公告)日：2024-09-03
申请号：US17325922
申请日：2021-05-20
发明人： Zhiwei Xu , Chiqing Fang , Chen Zhao
CPC分类号： H10N30/802 , B06B1/0207 , H02J7/00 , H02J7/007182 , H02M3/07 , H10N30/20
摘要： A driving circuit and a driving method are provided. The driving circuit includes an energy-storage capacitor, a charging circuit and a discharging circuit. The energy-storage capacitor is coupled between a piezoelectric load and the charging circuit. Operation states of the charging circuit and the discharging circuit are controlled, so that the charging circuit charges the energy-storage capacitor during a first operation interval of an operation period, to adjust a power supply voltage signal provided to the piezoelectric load to change with a reference voltage in a first interval, and at least the piezoelectric load discharges electricity through the discharging circuit during a second operation interval of the operation period, to adjust the power supply voltage signal to change with the reference voltage in a second interval. The driving circuit according to the present disclosure requires a few switches, thereby facilitating circuit integration.
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3.发明授权公开(公告)号：US12047001B2
公开(公告)日：2024-07-23
申请号：US17750650
申请日：2022-05-23
发明人： Guowang Li
摘要： A zero-crossing correction circuit for a switching converter having a main power switch and a synchronous power switch connected in series, can include: a detection circuit configured to detect an on-off state of a body diode of the synchronous power switch in a first time interval after the synchronous power switch is turned off and generate a detection signal; and a control and adjustment circuit configured to adjust a turn-off moment of the synchronous power switch according to an on-off state of the main power switch in a second time interval after the synchronous power switch is turned off and the detection signal.
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公开(公告)号：US20240161959A1
公开(公告)日：2024-05-16
申请号：US18386317
申请日：2023-11-02
发明人： Ke Dai , Jian Wei , Jiajia Yan , Chen Zhao
CPC分类号： H01F27/022 , H01F27/24 , H01F27/29 , H01F27/40
摘要： A module structure can include a first type structure including a first encapsulation body having a magnetic property, and at least one inductive element, where at least part of the inductive element is encapsulated in the first encapsulation body; a second type structure including a second encapsulation body having a non-magnetic property, and at least one non-inductive element, where the non-inductive element is encapsulated in the second encapsulation body; and pin structures located on exposed surfaces of the first type structure and/or the second type structure, in order to lead out corresponding electrodes.
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公开(公告)号：US11949010B2
公开(公告)日：2024-04-02
申请号：US17480374
申请日：2021-09-21
发明人： Budong You , Chunxin Xia
CPC分类号： H01L29/7816 , H01L29/0611 , H01L29/0882 , H01L29/66681
摘要： A metal-oxide-semiconductor device can include: a base layer; a source region extending from an upper surface of the base layer to internal portion of the base layer and having a first doping type; a gate structure located on the upper surface of the base layer and at least exposing the source region, and a semiconductor layer located on the upper surface of the base layer and having the first doping type, where the semiconductor layer is used as a partial withstand voltage region of the device, and the source region is located at a first side of the gate structure, the semiconductor layer is located at a second side of the gate structure, and the first side and the second side of the gate structure are opposite to each other.
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公开(公告)号：US20240105377A1
公开(公告)日：2024-03-28
申请号：US18368661
申请日：2023-09-15
CPC分类号： H01F27/24 , H01F27/2823
摘要： A magnetic structure can include: a first magnetic component and a second magnetic component; two magnetic columns configured to form a magnetic flux loop with at least part of the first magnetic component and at least part of the second magnetic component, where at least one of the two magnetic columns is wound with one or more windings; and where the at least part of the first magnetic component is located between the two magnetic columns.
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公开(公告)号：US11838015B2
公开(公告)日：2023-12-05
申请号：US17830651
申请日：2022-06-02
发明人： Zhan Chen , Jian Deng , Qiukai Huang
IPC分类号： H03K17/10 , H03K17/16 , H03K17/687 , H03K17/06
CPC分类号： H03K17/687 , H03K17/102 , H03K17/162 , H03K2017/066
摘要： A driving circuit and a driving method are provided. According to embodiments of the present disclosure, a power switch is driven by constant voltage or constant current during different time periods. The power switch is driven by using a first driving current during a Miller platform period, and the power switch is driven by using a second driving current when the Miller platform period ends, where the first driving current is less than the second driving current, so as to optimize EMI, reduce loss and improve efficiency.
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公开(公告)号：US11831247B2
公开(公告)日：2023-11-28
申请号：US17316902
申请日：2021-05-11
发明人： Jian Deng , Nan Luo , Yunlong Han , Zhaofeng Wang
CPC分类号： H02M3/33592 , H02M1/0058
摘要： A control circuit for a resonant converter, that is configured to: adjust a conduction time of one power switch and a conduction time of one corresponding synchronous rectifier switch in the resonant converter in a resonant period detection mode; control a resonance current to cross zero twice during the conduction time of the synchronous rectifier switch; and obtain a resonant period of the resonant converter.
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公开(公告)号：US11831242B2
公开(公告)日：2023-11-28
申请号：US17367753
申请日：2021-07-06
发明人： Dong Wu
CPC分类号： H02M3/1584 , H02M1/088
摘要： An apparatus includes a plurality of control modules coupled to a multi-phase power converter having a plurality of power stage circuits correspondingly coupled to the plurality of control modules, where each control module includes: a first port coupled to a second port of a previous control module; a second port coupled to a first port of a next control module, and being configured to generate a transmission signal for the next control module; and where the transmission signal represents at least two types of information, and is configured to control the corresponding power stage circuit to operate sequentially.
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公开(公告)号：US11824450B2
公开(公告)日：2023-11-21
申请号：US17346405
申请日：2021-06-14
发明人： Kaiwei Yao , Wang Zhang , Chen Zhao
CPC分类号： H02M3/1586 , H02M1/0058 , H02M1/38
摘要： A power converter can include: N switching power stage circuits, where output terminals of the N switching power stage circuits are connected in parallel, and N is a positive integer; an energy storage element coupled between an input terminal and the output terminal of the power converter, where the energy storage element is configured to periodically store energy for delivery to the output terminal of the power converter; and where after a main transistor of an M-th switching power stage circuit is turned off, a main transistor of the (M+1)-th switching power stage circuit is turned on, in order to realize zero-voltage-switching (ZVS) of the main transistor of (M+1)-th switching power stage circuit, where M is a positive integer less than N.
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