Patents Examined by Gary L. Laxton
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Patent number: 11929687Abstract: Provided is a power converter that allows a reduction in EMC noise current flowing through a control circuit board. A power converter 1 includes a semiconductor module 52, a capacitor 51, a control circuit board 45a, positive and negative-side bus bars 41, 42 connecting the semiconductor module 52 and the capacitor 51, a base 33 electrically connected to a ground of the control circuit board 45a, the control circuit board 45a being placed on the base 33, and an electrical conductor 35 electrically connected to the base 33 and extending in a stacking direction in which the base 33 and the control circuit board 45a are stacked. The positive and negative-side bus bars 41, 42 extend around the electrical conductor 35 and are connected to the semiconductor module 52.Type: GrantFiled: April 21, 2020Date of Patent: March 12, 2024Assignee: Hitachi Astemo, Ltd.Inventors: Youhei Nishizawa, Akihiro Goto, Yusaku Katsube
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Patent number: 11929688Abstract: A power converter for converting a DC input voltage into an AC output voltage, the power converter having a structure of Phi-2 type, and includes an input terminal for the DC input voltage, an output terminal for the AC output voltage, a power switch equipped with a control electrode, a first electrode and a second electrode linked to a reference potential, the power switch being configured to receive a drive signal at the control electrode, the converter further comprising a self-oscillating circuit, connected between the output terminal and the control electrode, and configured to supply and maintain a sinusoidal drive signal to the power switch from the output voltage.Type: GrantFiled: December 4, 2019Date of Patent: March 12, 2024Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, INSTITUT POLYTECHNIQUE DE GRENOBLEInventors: Rawad Makhoul, Pierre Perichon, Xavier Maynard, Jia Zhuang, Yves Lembeye
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Patent number: 11923763Abstract: An apparatus includes a first winding and a first switch connected in series between an input terminal and ground, a second winding magnetically coupled to the first winding and coupled to an output terminal through a second switch, a third winding magnetically coupled to the first winding and connected in series with a fourth switch, a fourth winding magnetically coupled to the first winding and connected in series with a third switch, and an energy storage device connected between a common node of the third winding and the fourth winding, and ground.Type: GrantFiled: August 23, 2022Date of Patent: March 5, 2024Assignee: Halo Microelectronics InternationalInventor: Milind Chandra Gupta
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Patent number: 11901813Abstract: Controller and method for a quasi-resonant switching power supply. For example, a controller for a quasi-resonant switching power supply includes: a valley detector configured to receive a voltage signal, detect one or more voltage valleys of the voltage signal in magnitude, and generate a detection signal representing the detected one or more voltage valleys; a valley-locking controller configured to receive one or more signals, generate a mode control signal that indicates a selected valley-locking mode based at least in part on the one or more signals, select from the detected one or more voltage valleys, one or more valleys that correspond to the selected valley-locking mode, and generate a valley control signal indicating the one or more selected valleys; and a gate driver configured to generate a drive signal based on at least information associated with the valley control signal.Type: GrantFiled: December 27, 2021Date of Patent: February 13, 2024Assignee: On-Bright Electronics (Shanghai) Co., Ltd.Inventors: Penglin Yang, Yuan Lin
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Laminated bus bar, power converter, power conversion device, and uninterruptible power supply device
Patent number: 11901721Abstract: A first AC terminal, a first positive DC terminal, and a first negative DC terminal protrude from a first end portion in the length direction of a flat plate portion of a laminated bus bar. The first AC terminal, the first positive DC terminal, and the first negative DC terminal are arranged in alignment in this order from a third end portion toward a fourth end portion in a width direction of the flat plate portion. A second AC terminal, a second positive DC terminal, and a second negative DC terminal protrude from a second end portion of the flat plate portion in the length direction. The second AC terminal, the second negative DC terminal, and the second positive DC terminal are arranged in alignment in this order from the third end portion toward the fourth end portion.Type: GrantFiled: March 17, 2020Date of Patent: February 13, 2024Assignee: TOSHIBA MITSUBISHI—ELECTRIC INDUSTRIAL SYSTEMS CORPORATIONInventors: Hidetaka Ishitobi, Kenji Suzuki -
Patent number: 11901829Abstract: A power converter includes an alternating-current-side circuit, a direct-current-side inductor, an alternating-current-side inductor, a direct-current-side circuit, a controlling unit, a transformer, a direct-current-side capacitor, and an alternating-current-side capacitor. The alternating-current-side circuit includes an alternating-current-side buffer circuit and a bridge circuit, and is connected to an alternating-current-side winding of the transformer via the alternating-current-side capacitor. The direct-current-side circuit includes a direct-current-side buffer circuit and a rectification switching element, and is connected to a direct-current-side winding of the transformer via the direct-current-side capacitor. The controlling unit controls switching of the switching elements.Type: GrantFiled: September 6, 2022Date of Patent: February 13, 2024Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Sadanori Suzuki
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Patent number: 11901840Abstract: The present disclosure relates to a field of chip technology, and discloses a three-phase inverter power chip and a preparation method therefor. The preparation method includes: forming active areas on a substrate and an isolation area located outside the active areas; forming a source electrode, a drain electrode and a gate electrode of a transistor in each active area; forming a first bond pad, second bond pads, third bond pads and fourth bond pads in the isolation area; the source electrode, the drain electrode and the gate electrode of the chip being extended to the first bond pad, the second bond pads, the third bond pads or the fourth bond pads corresponding thereto; and electrically connecting the source electrode, the drain electrode and the gate electrode of the transistor to the first bond pad, the second bond pads, the third bond pads or the fourth bond pads corresponding thereto.Type: GrantFiled: June 23, 2020Date of Patent: February 13, 2024Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAIInventors: Daokun Chen, Libo Ao, Bo Shi, Dan Zeng, Jun Cao
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Patent number: 11894775Abstract: A power conversion method is disclosed. The method includes operating a PFC converter configured to receive three input voltages and provide a DC link voltage between DC link nodes in one of at least two different operating modes, and operating an SR converter coupled to the PFC converter via the DC link nodes in one of at least two different operating modes dependent on an output voltage of the SR converter. Operating the SR converter includes regulating a voltage level of the DC link voltage dependent on a DC link voltage reference, and the at least two different operating modes of the SR converter include a buck mode and a series resonant mode.Type: GrantFiled: September 9, 2021Date of Patent: February 6, 2024Assignee: Infineon Technologies Austria AGInventors: Johann Walter Kolar, Yunni Li, Jannik Robin Schaefer
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Patent number: 11894762Abstract: A direct current-direct current conversion circuit includes: an input inductor, a first capacitor, a second capacitor, a flying capacitor, a first switch, a second switch, a first inductor, a first diode, a first buffer circuit, a third switch, a fourth switch, a second inductor, a second diode, and a second buffer circuit. A power supply, the input inductor, the first diode, the second diode, the first capacitor, and the second capacitor are sequentially connected in series. A first terminal of the flying capacitor is connected between the first diode and the second diode. A second terminal of the flying capacitor is connected between the first switch and the third switch, and the second terminal of the flying capacitor is further connected between the second switch and the second inductor.Type: GrantFiled: February 14, 2022Date of Patent: February 6, 2024Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.Inventors: Jun Wang, Houjian Xu, Tiansan Lin, Fangpo Zhang
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Patent number: 11888389Abstract: A power converter incudes a power factor correction circuit and a controller. The power factor correction circuit is configured to convert an input single-phase electrical power to a first DC electrical power. An active phase of the input single-phase electrical power is received in parallel through two of four conductors. A return phase of the input single-phase electrical power is received in parallel through two others of the four conductors. The power factor correction circuit is also configured to convert an input three-phase electrical power to the first DC electrical power. Three active phases of the input three-phase electrical power are received through three of the four conductors. The return phase is received through a fourth of the four conductors. The controller is configured to control the power factor correction circuit to operate in the single-phase input mode and the three-phase input mode in response to a control signal.Type: GrantFiled: August 24, 2022Date of Patent: January 30, 2024Assignee: Visteon Global Technologies, Inc.Inventors: Fiona E. Meyer-Teruel, Julien Payan, Kai Zhuang, Tao Wang
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Patent number: 11888400Abstract: In an embodiment, an USB interface includes a transformer, a primary winding of the transformer and a first switch connected in series between a first node and a second node, a secondary winding of the transformer and a component connected in series between a third node and a fourth node, the fourth node configured to be set a first reference potential, a second switch connected between the third node and a first terminal, the first terminal configured to provide an output voltage of the USB interface; wherein the component is configured to avoid a current circulation in the secondary winding when the first switch is closed and a control circuit configured to compare a first voltage of an interconnection node between the secondary winding and the component to a first threshold and compare the first voltage to a second threshold when the first voltage is, in absolute values, above the first threshold.Type: GrantFiled: July 13, 2021Date of Patent: January 30, 2024Assignees: STMICROELECTRONICS (GRENOBLE 2) SAS, STMICROELECTRONICS S.R.L.Inventors: Jean Camiolo, Francesco Ferrazza, Nathalie Ballot
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Patent number: 11884171Abstract: A low-voltage DC-DC converter (LDC) includes: an N-phase power circuit configured by connection of N DC-DC converters in parallel between a high-voltage (HV) battery and a low-voltage (LV) battery; and one output capacitor commonly connected to an output of each phase DC-DC converter. Each phase of the N-phase power circuit is controlled in an interleaving manner which delays a phase by 360°/N. Here, each N-phase power circuit is controlled by switching at a frequency of [(a frequency at which the parasitic resistance (equivalent series resistance (ESR)) of the output capacitor is minimized)/N]. The parasitic resistance of the output capacitor of the LDC can be minimized. Accordingly, a lifespan of a battery can be improved and efficiency of the DC-DC converter can be increased through the reduction of the equivalent series resistance (ESR) of the output capacitor.Type: GrantFiled: November 22, 2021Date of Patent: January 30, 2024Assignee: Hyundai Mobis Co., Ltd.Inventors: Ji Hoon Park, Deok Kwan Choi, Won Gon Kim, Kang Min Kim, Min Heo, Tae Ho Bang, Du Ho Kim, Hyun Woo Shim, Soo Min Jeon, A Ra Lee
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Patent number: 11881769Abstract: A multi-level converter control method is provided that includes: acquiring an inductive current of an LC filter in a driving pulse period; determining a to-be-adjusted first switch tube and a first duty ratio adjustment amount of the to-be-adjusted first switch tube based on a slope of a rising period of the inductive current, and adjusting a duty ratio of the to-be-adjusted first switch tube based on the first duty ratio adjustment amount; and determining a to-be-adjusted second switch tube and a second duty ratio adjustment amount of the to-be-adjusted second switch tube based on a slope of a falling period of the inductive current, and adjusting a duty ratio of the to-be-adjusted second switch tube based on the second duty ratio adjustment amount.Type: GrantFiled: November 15, 2021Date of Patent: January 23, 2024Assignee: The 13th Research Institute of China Electronics Technology Group CorporationInventors: Zhanbiao Gu, Zhiliang Zhang, Shipeng Cheng, Xiaoyong Ren, Senfeng Xu, Chao Tan
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Patent number: 11881777Abstract: This DC-pulse power supply device is provided with: a DC power supply; a pulse unit (20) for generating a pulse output using a step-up chopper circuit connected to the DC power supply; and a voltage superimposing unit (30A, 30B) connected to a DC reactor of the step-up chopper circuit. The voltage superimposing unit (30A, 30B) superimposes an amount (Vc, VDCL2) corresponding to a superimposed voltage on the output voltage of the step-up chopper circuit. The pulse unit (20) outputs, in a pulse form, the output voltage (Vo) on which the amount (Vc, VDCL2) corresponding to the superimposed voltage is superimposed by the voltage superimposing unit (30A, 30B). The amount corresponding to the superimposed voltage is superimposed on the pulse output of the step-up chopper circuit, thereby raising the output voltage of the pulse output of the step-up chopper circuit.Type: GrantFiled: November 8, 2019Date of Patent: January 23, 2024Assignee: KYOSAN ELECTRIC MFG. CO., LTD.Inventors: Itsuo Yuzurihara, Toshiyuki Adachi, Tomohiro Yoneyama, Koichi Miyazaki
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Patent number: 11881786Abstract: A polarity-selectable high voltage direct current power supply including a first drive assembly that transforms a first low voltage DC input into a first medium voltage alternating current output; a first HV output assembly that transforms the first LV AC output into a first HV DC output, wherein the first HV output assembly defines a first input stage; a polarity selector coupled between the second output junction of the first drive assembly and the first and second input stages of the first HV output assembly, the polarity selector operable between a first configuration and a second configuration; wherein in the first configuration the first HV DC output has a positive polarity; and wherein in the second configuration the first HV DC output has a negative polarity.Type: GrantFiled: March 3, 2023Date of Patent: January 23, 2024Assignee: Accion Systems, Inc.Inventors: Paul E. Fogel, Mikhail Filippov
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Patent number: 11870336Abstract: An input system includes a first input device and a second input device. Each of the first input device and the second input device includes a main body, a first connecting port, at least two second connecting ports, a power switching circuit and a control unit. When the first connecting port of the first input device is connected with an external power source, the power switching circuit of the first input device receives a first voltage from the external power source. When one of the second connecting ports of the first input device is connected with one of the second connecting ports of the second input device, the first voltage is converted into a second voltage by the power switching circuit of the first input device and the second voltage is transmitted to the second input device.Type: GrantFiled: August 9, 2022Date of Patent: January 9, 2024Assignee: PRIMAX ELECTRONICS LTD.Inventors: Chuan-Tai Hsiao, Chun-Han Huang, Tse-Ping Kuan, Hung-Wei Kuo
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Patent number: 11870366Abstract: According to various embodiments, a power conversion circuit is disclosed. The power conversion circuit includes at least one DC bus. The power conversion circuit further includes a plurality of DC-AC conversion units coupled to the DC bus and configured to convert a DC voltage into an AC voltage. The power conversion circuit also includes a multi-winding transformer comprising a magnetic core and a plurality of windings, where each DC-AC conversion unit is coupled to a corresponding winding of the multi-winding transformer.Type: GrantFiled: December 20, 2019Date of Patent: January 9, 2024Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Minjie Chen, Robert Pilawa-Podgurski
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Patent number: 11870334Abstract: A load control device for controlling the power delivered from an AC power source to an electrical load includes a thyristor, a gate coupling circuit for conducting a gate current through a gate of the thyristor, and a control circuit for controlling the gate coupling circuit to conduct the gate current through a first current path to render the thyristor conductive at a firing time during a half cycle. The gate coupling circuit is able to conduct the gate current through the first current path again after the firing time, but the gate current is not able to be conducted through the gate from a transition time before the end of the half-cycle until approximately the end of the half-cycle. The load current is able to be conducted through a second current path to the electrical load after the transition time until approximately the end of the half-cycle.Type: GrantFiled: February 24, 2023Date of Patent: January 9, 2024Assignee: Lutron Technology Company LLCInventors: Robert C Newman, Jr., Daniel F. Carmen, Christopher J. Salvestrini, Matthew V. Harte
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Patent number: 11863084Abstract: A multi-output AC/DC adapter can include a main power stage that receives power from an AC power source and delivers an intermediate output voltage, a plurality of regulator stages each comprising a chopper circuit that receives the intermediate output voltage and produces a regulated output DC voltage for one of the multiple outputs, and a controller. The main power stage can be a flyback converter, and the intermediate output voltage can be derived from a secondary winding of a flyback transformer of the flyback converter. The controller can provide a voltage reference signal and a feedback signal to the feedback loop of the main power stage, and the feedback signal can be an output voltage of one of the regulator stages. The controller can also provide a voltage reference signal to the controller of each of the regulator stages.Type: GrantFiled: September 22, 2021Date of Patent: January 2, 2024Assignee: Apple Inc.Inventor: Bogdan T. Bucheru
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Three-phase power factor controller implemented with single-phase power factor correction controller
Patent number: 11855527Abstract: A PFC correction circuit includes first, second, and third phase inputs coupled to three-phase power mains, with a three-phase full-wave rectifying bridge connected to an input node. First, second, and third boost inductors are respectively connected between first, second, and third phase inputs and first, second, and third taps of the three-phase full-wave rectifying bridge. A boost switch is connected between the input node and ground, and a boost diode is connected between the input node and an output node. A multiplier input driver generates a single-phase input signal as a replica of a signal at the three-phase power mains after rectification. A single-phase power factor controller generates a PWM signal from the single-phase input signal. A gate driver generates a gate drive signal from the PWM signal. The boost switch is operated by the gate drive signal.Type: GrantFiled: June 7, 2022Date of Patent: December 26, 2023Assignee: STMicroelectronics International N.V.Inventors: Ranajay Mallik, Akshat Jain