Patents Examined by Rafael O De Leon Domenech
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Patent number: 11973413Abstract: The power conversion device includes: a series unit composed of two switching elements; and a plurality of DC capacitors each connected in parallel to the series unit. The two switching elements and the plurality of DC capacitors are disposed in this order such that positive terminals and negative terminals thereof are aligned on a same side. Among busbars making connection between the respective DC capacitors and the switching elements, a busbar other than the busbar connected to the DC capacitor disposed at a farthest position has an inductance adjustment portion providing a bypass.Type: GrantFiled: December 13, 2019Date of Patent: April 30, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Kimiyuki Koyanagi
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Patent number: 11967903Abstract: A rectifier circuit includes: a first input line to which a first alternating-current voltage is supplied and that is wired along a first direction; a second input line to which a second alternating-current voltage is supplied and that is wired along the first direction on a second direction side of the first input line; a first output line that is configured to output a first rectified voltage and is wired along the second direction; a second output line that is configured to output a second rectified voltage and is wired along the second direction on a first direction side of the first output line; a first rectifier element that is arranged corresponding to an intersection of the first input line and the first output line; a second rectifier element that is arranged corresponding to an intersection of the second input line and the first output line; a third rectifier element that is arranged corresponding to an intersection of the first input line and the second output line; and a fourth rectifier element tType: GrantFiled: February 24, 2022Date of Patent: April 23, 2024Assignee: SEIKO EPSON CORPORATIONInventors: Kinya Matsuda, Kazuhiro Maekawa
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Patent number: 11958390Abstract: A magnetic seat adjustment system includes a frame structure, a movable adjustment mechanism, and a control system. The frame structure includes a first magnetic portion fixedly coupled to the frame structure and including first magnetic members that independently generate a magnetic field. The movable adjustment mechanism includes a movable base and a second magnetic portion. The second magnetic portion is fixedly coupled to the movable base and includes second magnetic members that independently generate a magnetic field. The control system controls a change in the magnetic field of the second magnetic members and/or the first magnetic members. When the magnetic field of the second magnetic members interacts with the magnetic field of the first magnetic members, the seat is in a magnetic levitation state, so that movement of the movable base drives movement of the seat.Type: GrantFiled: April 27, 2021Date of Patent: April 16, 2024Assignee: Foxtron Vehicle Technologies Co., Ltd.Inventor: Ting-Wei Chen
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Patent number: 11962234Abstract: A circuit includes a first rectifier having a first rectifier input and a first rectifier output. The circuit also includes a bridge circuit and a second rectifier. The bridge circuit is coupled to the first rectifier output. The bridge circuit has first, second, third, and fourth terminals. The first and second terminals are coupled to the first rectifier output, and the third and fourth terminals are adapted to be coupled to a primary winding of a transformer. The second rectifier has a second rectifier input and a second rectifier output. The second rectifier input is adapted to be coupled to a secondary winding of the transformer.Type: GrantFiled: August 19, 2021Date of Patent: April 16, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Navaneeth Kumar Narayanasamy, Manu Balakrishnan
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Patent number: 11955885Abstract: An apparatus for converting a first voltage into a second voltage includes a reconfigurable switched capacitor power converter having a selectable conversion gain. The power converter has switch elements configured to electrically interconnect capacitors to one another and/or to the first or second voltage in successive states. The switch elements are configured to interconnect at least some capacitors to one another through the switch elements. A controller causes the reconfigurable switched capacitor power converter to transition between first and second operation modes. The controller minimizes electrical transients arising from transition between modes. In the first operating mode, the power converter operates with a first conversion gain. In the second operating mode, it operates with a second conversion gain.Type: GrantFiled: October 25, 2022Date of Patent: April 9, 2024Assignee: pSemi CorporationInventors: Aichen Low, David M. Giuliano, Gregory Szczeszynski, Jeff Summit, Oscar Blyde
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Patent number: 11949338Abstract: A power converter includes a positive busbar electrically connected to a positive terminal and the first capacitor electrode, and includes a negative busbar electrically connected to a negative terminal and the second capacitor electrode. The power converter includes output busbars each electrically connected to a given output terminal among multiple output terminals, a given high-side switching element among a plurality of high-side switching elements, and a given low-side switching element among a plurality of low-side switching elements. The power converter includes a cooler that cools the high-side switching elements and the low-side switching elements. The power converter includes a housing that accommodates a supply tube and a discharge tube. The positive terminal, the negative terminal, the output terminals, the inlet port, and the outlet port are exposed on the housing. The inlet port, the outlet port, the supply tube, and the discharge tube are separate members from the housing.Type: GrantFiled: February 23, 2022Date of Patent: April 2, 2024Assignee: FUJI ELECTRIC CO., LTD.Inventors: Yuji Suzuki, Motohito Hori, Akio Toba, Ikuya Sato, Yasuhito Tanaka, Masamichi Iwasaki, Masaaki Ajima, Nobuaki Ohguri
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Patent number: 11942869Abstract: A power module is applied to an electric power conversion device in which multiple upper-lower arm circuits are connected to an electric power line in parallel. The power module includes the multiple upper-lower arm circuits; a capacitor connected to each of the multiple upper-lower arm circuits in parallel; an upper wiring that connects an upper arm and a positive electrode terminal of the capacitor; a lower wiring that connects a lower arm and a negative electrode of the capacitor; an upper electric power wiring that is an electric power wiring connected to the electric power line and connects a high potential line of the electric power line and the upper wiring; and a lower electric power wiring that is an electric power wiring connected to the electric power line and connects a lower potential line of the electric power line and the lower wiring.Type: GrantFiled: January 22, 2021Date of Patent: March 26, 2024Assignee: DENSO CORPORATIONInventors: Tomohisa Sano, Ryota Tanabe, Yuta Hashimoto, Kazuma Fukushima, Mamoru Kuwahara
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Patent number: 11923762Abstract: An example circuit includes a supply comparator having a supply input, a supply reference input and a supply comparator output. The supply input is coupled to a supply input terminal, and the supply reference input is configured to receive a supply reference voltage. A controller has a comparator input, a high-side output and a low-side output. The comparator input is coupled to the supply comparator output. A high-side switch having a control input. The high-side switch is coupled between the supply input and a switch output terminal, and the high-side output is coupled to the control input of the high-side switch. A low-side switch has a control input. The low-side switch is coupled between the switch output terminal and a ground terminal, and the low-side output is coupled to the control input of the low-side switch.Type: GrantFiled: November 30, 2021Date of Patent: March 5, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Sachin Sethumadhavan, Sayantan Gupta
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Patent number: 11923783Abstract: A method for operating a multi-level bridge power converter includes arranging a plurality of switching devices including at least four inner switching devices and at least two outer switching devices in an active neutral point clamped topology. The method also includes determining whether any of the switching devices is experiencing a failure condition by implementing a failure detection algorithm. The failure detection algorithm includes generating a blocking state logic signal by comparing a switching device voltage and a threshold reference voltage for each of the switching devices, determining an expected voltage blocking state for each of the switching devices based on gate drive signals of the switching devices and an output current direction, and detecting whether a failure condition is present in any of the switching devices based on the blocking state logic signals and the expected voltage blocking states of the switching devices.Type: GrantFiled: November 24, 2021Date of Patent: March 5, 2024Assignee: General Electric Renovables Espana, S.L.Inventors: Kapil Jha, Fernando Arturo Ramirez Sanchez, Nathaniel Robert Michener, Arvind Kumar Tiwari, Robert Gregory Wagoner, Joseph Kiran Banda
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Patent number: 11916482Abstract: A DC/DC converter includes a soft start overshoot prevention mechanism. The DC/DC converter includes a DC/DC conversion circuit, an overshoot detection apparatus, a pulse width modulation generator, an error amplifier, and an integration circuit connected to an output port of the error amplifier. The integration circuit is configured to perform integration processing on a difference between a reference voltage and an output voltage of the DC/DC conversion circuit, and control an amplitude of an amplified voltage that is input by the error amplifier to the pulse width modulation generator. The overshoot detection apparatus obtains an operating status parameter of the DC/DC converter, and controls, when the operating status parameter of the DC/DC converter meets an operating status parameter requirement, the integration circuit to discharge.Type: GrantFiled: February 25, 2022Date of Patent: February 27, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Guolei Yu, Guiping Zhang, Xuyang Wu
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Patent number: 11916485Abstract: A power supply system includes a plurality of power conversion circuits, each including an inductor and switching elements. A load distribution controller amplifies an inductor current signal input to a current signal terminal, outputs the amplified signal to a common node terminal, and generates an individual feedback signal to be output to a feedback signal adjustment terminal according to an inductor current signal and a voltage of the common node terminal. A switching control circuit controls the switching elements according to the individual feedback signal input to a feedback terminal.Type: GrantFiled: January 6, 2022Date of Patent: February 27, 2024Assignee: Murata Manufacturing Co., Ltd.Inventor: Tatsuya Hosotani
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Patent number: 11909329Abstract: A semiconductor unit includes a semiconductor device, a controller, and a resistor. The semiconductor device includes a transistor arranged between a positive electrode of a battery and an inverter circuit electrically connected to the battery. The controller is connected to a control terminal of the transistor and configured to control the transistor. The resistor arranged between the control terminal and the controller. The controller controls the transistor so that when a current flowing to the transistor is greater than or equal to a threshold value, the transistor is deactivated. The resistor has a resistance value that is greater than or equal to 100 ?.Type: GrantFiled: October 30, 2019Date of Patent: February 20, 2024Assignee: ROHM CO., LTD.Inventors: Mineo Miura, Masashi Hayashiguchi, Jun Terada
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Patent number: 11909306Abstract: A power converter circuit included in a computer system regulates a power supply voltage used by other circuits in the computer system. During operation, the power converter circuit monitors the load current, and, in response to a transient in the load current, switches regulation modes to adapt to the new load conditions. Upon a detection of the end of the transient in the load current, the power converter returns to its original regulation mode.Type: GrantFiled: April 13, 2021Date of Patent: February 20, 2024Assignee: Apple Inc.Inventors: Yue Wen, Hubert Attah, Wenxun Huang, Hao Zhou
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Patent number: 11909320Abstract: In one embodiment, a method includes transmitting multi-phase pulse power from power sourcing equipment to a powered device in a data center, wherein the multi-phase pulse power comprises multiple phases of power delivered in a sequence of pulses defined by alternating low direct current voltage states and high direct current voltage states, and synchronizing the pulses at the power sourcing equipment with the pulses at the powered device.Type: GrantFiled: February 8, 2023Date of Patent: February 20, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Richard Anthony O'Brien, Joel Richard Goergen, Chad M. Jones, Jason DeWayne Potterf, George Allan Zimmerman
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Patent number: 11901827Abstract: A multiwinding transformer includes a primary-side winding and a plurality of secondary-side windings. A primary-side bridge circuit to carry out DC/AC power conversion is connected between a primary-side DC terminal connected to a DC power supply and the primary-side winding. A plurality of secondary-side bridge circuits to carry out DC/AC power conversion are connected between the plurality of secondary-side windings and a plurality of secondary-side DC terminals, respectively. The plurality of secondary-side windings include a first secondary-side winding strongest in magnetic coupling to the primary-side winding and a second secondary-side winding weaker in magnetic coupling to the primary-side winding than the first secondary-side winding.Type: GrantFiled: January 21, 2019Date of Patent: February 13, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takaharu Ishibashi, Takushi Jimichi
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Patent number: 11901806Abstract: A disconnect switch for a power converter is disclosed. An apparatus includes an inductor coupled between an input power supply node and a switch node, and a converter circuit configured to generate a particular voltage level on a boost node using a voltage level of the switch node. An output circuit is configured to provide the particular voltage level on the regulated power supply node using a voltage level of the boost node. In response to a determination that the regulated power supply node has been shorted to ground, the output circuit is configured isolate the boost node from the regulated power supply node. In response to a detection of a regulation event, the output circuit is configured to reduce the voltage level of the boost node to generate a reduced voltage on the regulated power supply node.Type: GrantFiled: September 24, 2021Date of Patent: February 13, 2024Assignee: Apple Inc.Inventors: Giovanni Saccomanno, Bogdan-Eugen Matei, Yesim Inam
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Patent number: 11888390Abstract: The invention relates to a system for operating a first PEG element (PFC1) and a second PEC element (PFC2) in an interleaved mariner, said system comprising a first integrated circuit (IC1) having a first PFC controller, a second integrated circuit (IC2) having a second PFC controller, as well as a synchronization circuit (SYNC) connecting the first integrated circuit (IC1) and the second integrated circuit (IC2), whereas the synchronisation circuit (SYNC) is adapted to control the first integrated circuit (IC1) and the second integrated circuit (IC2) such that the first PFC element (PFC1) and the second PFC element (PFC2) are operated in anti-phase.Type: GrantFiled: October 14, 2019Date of Patent: January 30, 2024Assignee: Secop GmbHInventor: Rune Thomsen
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Patent number: 11881774Abstract: A controller includes: a pulse-width modulation (PWM) circuit; a control loop; and a reference voltage controller. The control loop has: a feedback input adapted to be coupled to an output voltage of a power stage; a control loop output coupled to a PWM control input; and an operational amplifier with a first feedback input, a first reference input, and an amplifier output, the first feedback input connected to the feedback input, and the amplifier output coupled to the PWM control input. The reference voltage controller has a reference voltage output coupled to the first reference input, the reference voltage controller configured to adjust a reference voltage provided to the reference voltage output responsive to a dynamic error estimate based on error in the operational amplifier.Type: GrantFiled: March 12, 2021Date of Patent: January 23, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Bikash Kumar Pradhan, Preetam Charan Anand Tadeparthy, Muthusubramanian Venkateswaran, Venkatesh Wadeyar, Siddaram Mathapathi
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Patent number: 11881762Abstract: An apparatus may include a regulated power converter, a control engine configured to control the regulated power converter based upon a regulation control parameter, and a parameter control system. The parameter control system may be configured to detect a transient event at an output of the regulated power converter. The parameter control system may be configured to modify, in response to the transient event, the regulation control parameter from a first value to a second value based upon a parameter modification profile. The parameter control system may be configured to modify, in response to modifying the regulation control parameter from the first value to the second value, the regulation control parameter according to a function of the parameter modification profile. The function may define a return of the regulation control parameter from the second value to the first value over a period of time.Type: GrantFiled: July 29, 2021Date of Patent: January 23, 2024Assignee: INFINEON TECHNOLOGIES AUSTRIA AGInventors: Venkat Sreenivas, Bikiran Goswami, Benjamim Tang, Todd Bellefeuille
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Patent number: 11881791Abstract: An object of the present invention is to provide a power conversion device capable of reducing an influence of electromagnetic noise propagating from a circuit body toward a drive circuit board. A power conversion device 100 of the present invention includes a circuit body 6 that converts a direct current into an alternating current, a drive circuit board 5 that drives the circuit body 6, a base member 4 provided between the circuit body 6 and the drive circuit board 5, and a case 1 that houses the circuit body 6 and the base member 4. The base member 4 includes a first flow channel forming portion 4A that forms a flow channel space 1C1 between the circuit body 6 and the base member 4, and a first extending portion 4B2 extending from the flow channel forming portion 4A and connected to an inner surface of the case 1.Type: GrantFiled: June 17, 2019Date of Patent: January 23, 2024Assignee: Hitachi Astemo, Ltd.Inventors: Taesung Kim, Hiroki Funato