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公开(公告)号：US12224663B2
公开(公告)日：2025-02-11
申请号：US17725791
申请日：2022-04-21
Inventor： Junyan Sun , Wang Zhang
Abstract: A switched capacitor converter can include a plurality of input switch groups connected in series between an input terminal and an output terminal, where each input switch group can include two power switches connected in series. The switched capacitor converter can also include a plurality of output switch groups, where each output switch group can include two power switches connected in series. The switched capacitor converter can also include a plurality of capacitors, first terminals of which are respectively connected to the common nodes of every two series-connected power switches in the plurality of input switch groups, and second terminals of which are respectively connected to intermediate nodes of each output switch group. The switched capacitor converter can also include a plurality of inductors, where a first terminal of each output switch group can connect to a first terminal of a corresponding inductor.
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公开(公告)号：US20250040203A1
公开(公告)日：2025-01-30
申请号：US18773979
申请日：2024-07-16
Inventor： Xufeng Li , Huan Wang , Qianwen Wang
IPC: H01L29/06 , H01L21/762 , H01L21/768
Abstract: A method of forming an isolation trench, can include: forming a trench in a substrate, the trench extending from a first surface of the substrate to an interior of the substrate; and forming at least two layers of different filling materials in the trench to completely fill the trench, where a step coverage of each layer of filling material is better than a step coverage of the previous layer of filling material.
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公开(公告)号：US20250029782A1
公开(公告)日：2025-01-23
申请号：US18760314
申请日：2024-07-01
Inventor： Gang Yao , Huafeng Yuan , Fangqin Yu
Abstract: A capacitor can include a bottom conductive structure; at least one middle conductive structure, each middle conductive structure having a first conductive pattern and a second conductive pattern surrounding an outer side of the first conductive pattern, where the first conductive pattern and the second conductive pattern of each layer of the middle conductive structure form an interdigitated structure; and a top conductive structure having a third conductive pattern and a fourth conductive pattern arranged at an outer side of the third conductive pattern, where the third conductive pattern and the fourth conductive pattern form an interdigitated structure.
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公开(公告)号：US20250024569A1
公开(公告)日：2025-01-16
申请号：US18764848
申请日：2024-07-05
Inventor： Yuanyu Yang , Jianxin Wang , Xiaoqiang Xu
IPC: H05B45/305 , H05B45/34
Abstract: A synchronization signal transmission method employed by a backlight system, the backlight system having a master device, a plurality of slave devices, and a plurality of LED strings, can include: injecting a synchronization signal into a power supply voltage, in order to generate a first signal; inputting the first signal to a power supply port of each slave device, in order to simultaneously transmit the synchronization signal to each slave device, where each slave device is configured to drive at least one LED string; and receiving the first signal from the power supply port of each slave device for synchronization operation.
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5.发明授权公开(公告)号：US12184198B2
公开(公告)日：2024-12-31
申请号：US17895272
申请日：2022-08-25
Inventor： Chaojun Chen
Abstract: A control circuit for a switching power supply, can include: a sampling circuit configured to obtain an inductor current and a drain-source voltage of a main power transistor in a power stage circuit, in order to generate a sampling signal; where the control circuit generates an inductor current sampling signal according to the sampling signal during an on-period of the main power transistor; and where during an off-period of the main power transistor, the control circuit generates a zero-crossing signal of the inductor current and an overvoltage signal of an output voltage of the switching power supply according to the sampling signal.
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Patent Agency Ranking
公开(公告)号：US20240414823A1
公开(公告)日：2024-12-12
申请号：US18732875
申请日：2024-06-04
Inventor： Hongbin Lai , Shujian Lin
IPC: H05B45/345
Abstract: An LED driving circuit can include: a linear driving circuit coupled in series with an LED load, in order to control a current flowing through the LED load; a first capacitor coupled in parallel with a serial structure having the linear driving circuit and the LED load; and a control circuit configured to decrease a difference between a voltage of the first capacitor and a load voltage of the LED load, in order to increase an efficiency of the LED driving circuit.
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公开(公告)号：US12166091B2
公开(公告)日：2024-12-10
申请号：US17568856
申请日：2022-01-05
IPC: H01L29/40 , H01L21/762 , H01L29/10 , H01L29/66 , H01L29/78
Abstract: An LDMOS transistor can include: a field oxide layer structure adjacent to a drain region; and at least one drain oxide layer structure adjacent to the field oxide layer structure along a lateral direction, where a thickness of the drain oxide layer structure is less than a thickness of the field oxide layer, and at least one of a length of the field oxide layer structure and a length of the drain oxide layer structure is adjusted to improve a breakdown voltage performance of the LDMOS transistor.
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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
Inventor： Chaojun Chen , Jian Deng , Jin Jin
CPC classification number: H02M1/0019 , H02M1/0025 , H02M1/0045 , H02M3/015
Abstract: 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
Inventor： Zhiwei Xu , Chiqing Fang , Chen Zhao
CPC classification number: H10N30/802 , B06B1/0207 , H02J7/00 , H02J7/007182 , H02M3/07 , H10N30/20
Abstract: 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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10.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
Inventor： Guowang Li
Abstract: 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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