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公开(公告)号：US11894688B2
公开(公告)日：2024-02-06
申请号：US17621724
申请日：2020-06-11
Applicant: VALEO SYSTEMES DE CONTROLE MOTEUR
Inventor： Nicolas Allali
CPC classification number: H02J50/05 , H02J7/06 , H02M7/05 , H02M7/1552
Abstract: An electrical circuit for charging a DC voltage source from an AC voltage network. The circuit includes an input that is able to receive an AC voltage from the voltage network, and a first output able to be connected to the DC voltage source. An insulating stage formed using a plurality of capacitors is arranged so as to electrically insulate the input from the first output of the circuit. A frequency-raising stage is arranged between the input of the circuit and the insulating stage so that the capacitors of the insulating stage are in a circuit portion that has flowing through it an AC current at a frequency that is greater than that of the AC network.
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公开(公告)号：US11824464B2
公开(公告)日：2023-11-21
申请号：US17383650
申请日：2021-07-23
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Yuki Kumazawa
IPC: H02M7/521 , H03K17/16 , H02M7/04 , H02M7/219 , H01L29/739
CPC classification number: H02M7/521 , H01L29/7393 , H02M7/05 , H02M7/219 , H03K17/162
Abstract: The present invention is directed to provide a semiconductor device capable of protecting a switching element even though having a capacitor connected to a control signal input terminal of the switching element. Semiconductor device includes an IGBT including a gate configured to be input a gate signal and a current detection terminal used to detect at least one of overcurrent or short-circuit current, a gate capacitor arranged between the gate and a reference potential terminal, the gate capacitor being disconnected from the gate as needed, and a disconnection unit configured to disconnect a connection between the gate capacitor and the gate when a detection current being a current output from the current detection terminal is equal to or larger than a first current set on a basis of a minimum current causing oscillation in a loop circuit formed by including the IGBT and the gate capacitor.
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公开(公告)号：US20230291326A1
公开(公告)日：2023-09-14
申请号：US18006596
申请日：2020-07-24
Applicant: SIEMENS AKTIENGESELLSCHAFT
Inventor： Dominik Ergin , Felix Kammerer , Sebastian Müller
Abstract: A converter has module devices each with a series connection of at least two partial modules being electrically connected in series. A central device is configured to switch module control devices, in which a sum of the transmitted voltage values or the transmitted sum value reaches a predefined voltage threshold, into a second charging phase of a charging operation by transmitting a first voltage specification relating to switched-off partial modules and a second voltage specification relating to switched-on partial modules to the module control devices. The module devices are configured to meet the first and second voltage specifications by setting none, one or more of the communication-capable partial modules thereof into a switched-on operating state and none, one or more of the other communication-capable partial modules thereof into a switched-off operating state, and to continue the charging of the energy stores which are in the switched-on and blocked operating state.
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公开(公告)号：US12126272B2
公开(公告)日：2024-10-22
申请号：US17718562
申请日：2022-04-12
Applicant: CANON KABUSHIKI KAISHA
Inventor： Yuya Hirano
CPC classification number: H02M7/043 , H02M1/0029 , H02M1/0054 , H02M1/346 , H02M3/335 , H02M7/05 , H03K17/163 , Y02B70/10
Abstract: A power supply device includes a transformer including a primary winding, a secondary winding and an auxiliary winding, first, second and third circuits, and a switch. The first circuit in which a first capacitor and a first rectifier are connected in series is connected to the primary winding in parallel. The switch of which one end is connected to one end of the primary winding. The second circuit in which the auxiliary winding and a second rectifier are connected in serial is connected between a connecting point, to which the first capacitor and the first rectifier are connected, and the other end of the switch. The third circuit including a resistor and a third rectifier is connected to a gate of the switch. In the third circuit, a resistance value in a direction where a current flows into the gate of the switch is smaller than that in a direction where the current flows out of the gate.
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公开(公告)号：US12101021B2
公开(公告)日：2024-09-24
申请号：US17707317
申请日：2022-03-29
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Yuta Endo , Takato Sugawara
CPC classification number: H02M1/081 , H02M1/007 , H02M1/08 , H02M1/083 , H02M1/126 , H02M1/4225 , H02M1/4241 , H02M7/05 , H02M7/2176 , H02M1/4208
Abstract: An integrated circuit for a power supply circuit configured to generate an output voltage of a target level from an alternating current (AC) voltage. The power supply circuit includes a first capacitor and an inductor configured to receive a voltage according to the AC voltage, and a transistor configured to control an inductor current flowing through the inductor. The integrated circuit is configured to switch the transistor, and includes: an identification circuit configured to identify whether a voltage level of an effective value of the AC voltage is a first level or a second level, and a signal output circuit configured to output a driving signal to drive the transistor, and correct the driving signal to thereby correct the input current, in response to the voltage level of the effective value being the first level and the second level, respectively.
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Patent Agency Ranking
16.发明公开公开(公告)号：US20240162805A1
公开(公告)日：2024-05-16
申请号：US18372582
申请日：2023-09-25
Applicant: Delta Electronics (Shanghai) Co., Ltd.
Inventor： Kai Dong , Yichao Wang , Yuhua Hu , Jinfa Zhang
CPC classification number: H02M1/0083 , H02M7/05 , H02M7/219
Abstract: In the present disclosure, the multi-level AC/DC conversion circuit and the multi-level DC/DC conversion circuit calculate the duty ratio of synchronous rectification switch according to the input voltage, the output voltage, the interval time of turning on the main switch, the switching cycle and the duty ratio of main switch, thereby eliminating the need for additional zero-current detecting function or zero-crossing detection circuit in conventional AC/DC conversion circuits. Accordingly, for the multi-level AC/DC conversion circuit and the multi-level DC/DC conversion circuit of the present disclosure, the cost is reduced, and the reliability is enhanced.
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公开(公告)号：US20230387786A1
公开(公告)日：2023-11-30
申请号：US17752608
申请日：2022-05-24
Applicant: Dell Products L.P.
Inventor： Shree Rathinasamy , Maunish Shah , Per Henrik Fremrot
CPC classification number: H02M1/10 , H02M1/4233 , H02M7/05 , H02M3/06
Abstract: A power supply system includes an AC input device/DC input device connector having an AC input device sub-connector and a DC input device sub-connector, an AC power supply subsystem configured to perform first power operation(s) on first power received from the AC input device sub-connector, and a DC power supply subsystem configured to perform second power operation(s) on second power received from the DC input device sub-connector. When an AC input device is coupled to the AC input device sub-connector, an AC-or-DC power supply subsystem in the power supply system performs third power operation(s) on the first power received from the AC power supply subsystem, and supplies it to component(s). When the DC input device is coupled to the DC input device sub-connector, the AC-or-DC power supply subsystem performs the third power operation(s) on the second power received from the DC power supply subsystem, and supplies it to component(s).
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公开(公告)号：US20230231463A1
公开(公告)日：2023-07-20
申请号：US17703304
申请日：2022-03-24
Applicant: Delta Electronics, Inc.
Inventor： Chien-Jen Chen , Chao-Shun Yang , Cheng-Hsun Chang
CPC classification number: H02M1/0006 , H02M7/05 , H02M3/158 , H02M1/007 , H02M1/009
Abstract: The present disclosure provides a conversion circuit including a power supply module, positive and negative input terminals, positive and negative output terminals, a switch, an inductor, input and output capacitors, and a controller. The power supply module converts an AC power for providing three potentials on three power supply terminals respectively. The potential on the first power supply terminal is higher than the potential on the second power supply terminal, which is higher than the potential on the third power supply terminal. The positive and negative input terminals are electrically connected to the first and third power supply terminals respectively, and a voltage therebetween is an input voltage. The negative output terminal is electrically connected to the third power supply terminal. The controller is electrically connected to the positive input terminal, the second power supply terminal and the switch. A voltage across the controller is lower than the input voltage.
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公开(公告)号：US20230209663A1
公开(公告)日：2023-06-29
申请号：US18113824
申请日：2023-02-24
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Namju PARK , Taeho LEE , Yongwook KIM , Jungsuk CHU , Dongoh KANG
CPC classification number: H05B6/062 , H05B6/1245 , H05B1/0266 , H05B1/0202 , H02J50/10 , H02M7/05
Abstract: A cooking device that includes a controller configured to, after being activated, control an operation of the cooking device; a communication unit configured to, after being activated, transmit data to a wireless power transmission device; a pickup coil configured to wirelessly receive power from a transmitting coil of the wireless power transmission device; a rectification unit configured to rectify the an alternating current (AC) of the pickup coil corresponding to the power received by the pickup coil, to produce a direct current (DC); a first capacitor configured to be charged in accordance with the DC current produced by the rectification unit to activate the communication unit; and a second capacitor, having a capacitance greater than a capacitance of the first capacitor, configured to be charged in accordance with the DC current produced by the rectification unit to activate the controller, so that the communication unit is activated before the controller.
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公开(公告)号：US20230147858A1
公开(公告)日：2023-05-11
申请号：US17972344
申请日：2022-10-24
Applicant: Infineon Technologies Austria AG
Inventor： Martin FELDTKELLER
CPC classification number: H02M7/05 , H02M1/0012 , H02M1/0009 , H02M1/0025 , H02M1/0087
Abstract: A controller for a power converter, a corresponding power converter and a corresponding method are provided. After reaching a first maximum voltage, power flowing is gradually reduced, and later the current provided to an output capacitor is gradually ramped up.
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