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公开(公告)号：US11923757B2
公开(公告)日：2024-03-05
申请号：US17609881
申请日：2020-05-08
Applicant: Changho Kim
Inventor： Changho Kim
CPC classification number: H02M1/0032 , H02J9/00 , H02M1/0048 , H02M1/08 , H02M3/155 , H02M7/06 , H02M1/0054 , H02M1/327
Abstract: An electronic device according to various embodiments may comprise a power converter configured to generate DC(direct current) power based on power obtained from outside, a state detecting unit, comprising a first photo coupler and a first diode electrically connected with the first photo coupler, configured to detect a state of a user device that comprises the electronic device or is electrically connected with the electronic device, a driving power supply unit configured to supply driving power for the user device based on the DC power, a power cut-off unit, comprising a first field effect transistor (FET), configured to cut off the DC power provided to the driving power supply unit according to the state of the user device, a control unit electrically connected with the state detecting unit.
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公开(公告)号：US20240072685A1
公开(公告)日：2024-02-29
申请号：US17767473
申请日：2020-09-30
Applicant: Nidec Corporation
Inventor： Ming Tsan LIN , Yi-Shiang OUYANG , Hsin-Chang YU
IPC: H02M7/5387 , H02M1/00 , H02M3/155 , H02P27/08
CPC classification number: H02M7/53871 , H02M1/007 , H02M3/155 , H02P27/08 , H02M1/0048
Abstract: A power converter to supply power to each phase of a three-phase motor includes a booster circuit connected to a DC power supply to boost an input voltage input from the DC power supply in response to a pulse width modulation boosting signal, an inverter connected to the booster circuit and including a three-phase switching circuit including switches, and an output connected to the three-phase switching circuit to supply power to each phase of the three-phase motor, and a controller to output the pulse width modulation boosting signal to the booster circuit and output the pulse width modulation boosting signal to the booster circuit when detecting that the booster circuit is in a boosted state.
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公开(公告)号：US11909386B2
公开(公告)日：2024-02-20
申请号：US17898578
申请日：2022-08-30
Applicant: DENSO CORPORATION
Inventor： Hironori Akiyama , Tetsuya Dewa
IPC: H02M1/08 , H03K17/16 , H03K17/687 , H02M1/00 , H03K17/284
CPC classification number: H03K17/687 , H02M1/0048 , H02M1/08 , H03K17/16 , H03K17/284
Abstract: A gate drive device drives a gate of each of two semiconductor switching elements constituting upper and lower arms of a half bridge circuit. The gate drive device detects a peak value of an element voltage that is a voltage of a main terminal of one of the two semiconductor switching elements, as one semiconductor switching element, or a change rate of the element voltage during a change period in which the element voltage changes. The gate drive device determines whether an energization to the one semiconductor switching element during the change period is a forward energization in which a current flows in a forward direction or a reverse energization in which the current flows in a reverse direction.
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公开(公告)号：US11909311B2
公开(公告)日：2024-02-20
申请号：US17015154
申请日：2020-09-09
Applicant: Delta Electronics (Shanghai) CO., LTD
Inventor： Jinping Zhou , Min Zhou , Zhangnan Xin , Xinjian Zou
IPC: H02M3/158 , H02M1/14 , H02M1/00 , H01F27/38 , H01F37/00 , H01F3/14 , H02M3/04 , H01F27/30 , H01F27/24 , H01F27/28
CPC classification number: H02M3/04 , H01F3/14 , H01F27/306 , H01F27/38 , H01F37/00 , H02M3/1584 , H01F27/24 , H01F27/28 , H02M1/0038 , H02M1/0048 , H02M1/0064 , H02M1/14 , H02M3/1586
Abstract: An N-phase power converter has N phases with outputs connected in parallel and outputs connected in parallel. The converter comprises: N switch units, wherein each phase of the N-phase power converter comprises one of the N switch units; and an integrated inductor unit, comprising M inductor subunits, wherein M is a natural number greater than or equal to 2, each inductor subunit comprises i inductors, i is a natural number greater than or equal to 2, N>M×i or N=M×i, M×i of the inductors in the integrated inductor unit are respectively coupled to M×i of the N switch units, wherein: the i inductors of each of the inductor subunit are inverse-coupled to each other, the coupling coefficient between the M inductor subunits is less than the coupling coefficient between the i inductors in each of the inductor subunits.
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公开(公告)号：US20230421048A1
公开(公告)日：2023-12-28
申请号：US17982318
申请日：2022-11-07
Applicant: Intel Corporation
Inventor： Patrick Kam-shing Leung , Fazli Lut Ahmad Fu'aad , Jianwei Dai , Philip Lehwalder
CPC classification number: H02M1/084 , H02M1/0048 , H02M1/0009
Abstract: Various embodiments provide apparatuses, systems, and methods for automatic phase scaling (APS) of dynamic voltage ID (DVID) in a voltage regulator. Other embodiments may be described and claimed.
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Patent Agency Ranking
公开(公告)号：US20230344329A1
公开(公告)日：2023-10-26
申请号：US17724985
申请日：2022-04-20
Applicant: Cisco Technology, Inc.
Inventor： Xiqun Zhu , Sung Kee Baek , Joel Goergen , Doug Paul Arduini , Ruqi Li
IPC: H02M1/00
CPC classification number: H02M1/0048 , H02M1/0043
Abstract: A control method improves the efficiency profile of a power supply across a wide range of output loading. The method includes obtaining a measure of output power for a power supply, which includes one or more output modules and an auxiliary power supply. The method determines whether a maximum power rating of the auxiliary power supply is sufficient to provide the measure of output power. Responsive to a determination that the maximum power rating of the auxiliary power supply is sufficient to provide the measure of output power, the controller of the power supply directs the auxiliary power supply to provide the output power.
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公开(公告)号：US20230336092A1
公开(公告)日：2023-10-19
申请号：US18028763
申请日：2020-12-23
Applicant: Mitsubishi Electric Corporation
Inventor： Hajime TOYODA
CPC classification number: H02M7/217 , H02M1/0048
Abstract: This power conversion device includes: a reactor, switching elements, a first capacitor, and a second capacitor provided between an AC power supply and a DC load; and a controller for controlling operations of the switching elements. The controller controls voltage of the first capacitor and voltage of the second capacitor to predetermined command values, while, in accordance with load information regarding the DC load, performing changeover between a first control method of controlling the switching elements at a constant switching frequency over an AC cycle of the AC power supply, and a second control method of controlling them at a frequency lower than the switching frequency in the first control method.
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公开(公告)号：US12132429B2
公开(公告)日：2024-10-29
申请号：US17783000
申请日：2020-01-15
Applicant: Mitsubishi Electric Corporation
Inventor： Satoshi Murakami , Yoshihiro Takeshima , Yoshiaki Ishiguro , Akira Nakagawa , Ryota Kondo
CPC classification number: H02P27/06 , H02M1/0048 , H02M7/483 , H02M7/537
Abstract: A power conversion device and a motor system according to the present disclosure comprises an inverter circuit which is connected to a motor, a switch circuit, and a control circuit. The power conversion device and the motor system are characterized in that the inverter circuit and the switch circuit are capable of two-level operation and three-level operation, and the control circuit switches between the two-level operation and the three-level operation on the basis of the motor torque command and the rotational speed command. As a result, it is possible to reduce the total loss in the power conversion device and the motor.
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公开(公告)号：US12132414B2
公开(公告)日：2024-10-29
申请号：US17310962
申请日：2020-02-20
Applicant: METAWATER Co., Ltd.
Inventor： Kazuya Takahashi , Souichirou Yamamoto , Kyohei Yamamoto , Yoshitaka Yonetani
CPC classification number: H02M7/4815 , H02M7/539 , C01B13/115 , H02M1/0048 , H02M7/4818
Abstract: A power supply that supplies power to a capacitive load comprises: a converter; an inverter; a resonant transformer; a detector configured to detect output frequency or output current and output voltage; and a controller configured to control the inverter, wherein the controller is configured to: calculate output power; adjust the output frequency within a predetermined frequency search range, adjust the output voltage within a predetermined voltage search range, and specify, as a frequency target value, a minimum value of the output frequency with which the output power reaches predetermined output power; and control the inverter so that the output frequency will be the frequency target value, adjust the output voltage within the predetermined voltage search range, and specify, as a voltage target value, a value of the output voltage with which the output power is target output power.
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公开(公告)号：US20240339918A1
公开(公告)日：2024-10-10
申请号：US18616740
申请日：2024-03-26
Applicant: Qorvo US, Inc.
Inventor： Baker Scott , George Maxim , Nadim Khlat , Hui Liu , David Edward Reed
CPC classification number: H02M1/0048 , H02M1/44 , H02M3/155
Abstract: Systems and methods for improving efficiency in a power management circuit are disclosed. In one aspect, a ping-pong sample and hold circuit smooth transitions from buck to boost (and vice versa) modes of operation for a direct current-to-direct current (DC-DC) converter in the power management circuit. The ping-pong sample and hold circuit provide a ramp compensation for each clock cycle, where transitions are smoothed by holding the last value used from the previous mode of operation. In a second aspect, a current sensor is used that integrates a current value to provide a base feedback loop for the DC-DC converter and may use various compensation factors to provide a proper ramp signal for the DC-DC converter.
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