Patents Examined by Gary L. Laxton
  • Patent number: 12294308
    Abstract: The present disclosure relates to a circuit and a method for compensating output of voltage source, and the voltage source. The circuit for compensating an output of a voltage source, comprises: a sensing unit, a first adjustment unit, an amplifier unit, and a second adjustment unit. The first adjustment unit is coupled in parallel with the sensing unit, and configured to generate at least one pole point and/or at least one zero point in a transfer function of the circuit; the second adjustment unit is configured to generate at least one zero point in the transfer function of the circuit. Therefore, the first adjustment unit, and the second adjustment unit are arranged for generating adjustable zero points and pole points in the transfer function of the voltage source, so as to obtain a higher loop bandwidth.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: May 6, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Chao Wen, Tai Ma
  • Patent number: 12294309
    Abstract: A multi-phase regulator circuit includes one or more switching converter circuits. Each switching converter circuit includes a transformer including a primary winding and a multi-segment secondary winding, a primary side switch circuit configured to connect the primary winding to an input of the multi-phase regulator circuit, and multiple secondary side circuits including multiple coupled-inductor circuits. Each coupled-inductor circuit includes a first winding magnetically coupled to a second winding. Each segment of the transformer multi-segment secondary winding is operatively coupled to the first winding of a coupled-inductor circuit and each of the first windings is connected to an output of the multi-phase regulator circuit.
    Type: Grant
    Filed: September 9, 2022
    Date of Patent: May 6, 2025
    Assignee: Analog Devices, Inc.
    Inventors: Xingxuan Huang, Chuan Shi, Xinyu Liang, Jonathan Paolucci
  • Patent number: 12278570
    Abstract: A DC-DC converter assembly includes a DC-DC power converter. A converter load is electrically connected between a positive input and a positive output (or negative input and negative output) of the DC-DC converter such that a DC input voltage source of the assembly supplies load power directly to the converter load without passing through the DC-DC power converter.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: April 15, 2025
    Assignee: Lithium Balance A/S
    Inventors: Zhe Zhang, Kasper Luthje Jorgensen
  • Patent number: 12278561
    Abstract: A switched capacitor voltage converter includes an inductive branch and two branches, by controlling a turning on and off of switch transistors, charges on a parasitic capacitor of one branch are completely transferred to another branch of the two branches via the inductive branch within a period of time after primary switch transistors are turned off, and voltage difference between both terminals of each of the primary switch transistors become zero, and then the primary switch transistors are started to be turned on, the respective voltage differences of the primary switch transistors are zero at a moment when the primary switch transistors are turned on.
    Type: Grant
    Filed: November 10, 2022
    Date of Patent: April 15, 2025
    Assignee: Southchip Semiconductor Technology (Shanghai) Co., Ltd.
    Inventors: Wei Zhao, Xing Liang
  • Patent number: 12276993
    Abstract: In certain aspects, a voltage regulator includes a pass transistor coupled between an input of the voltage regulator and an output of the voltage regulator, and an amplifier having a first input coupled to a reference voltage, a second input coupled to the output of the voltage regulator via a feedback path, and an output. The voltage regulator also includes a voltage booster coupled between the output of the amplifier and a gate of the pass transistor. In certain aspects, the voltage booster includes a first capacitor and a second capacitor for double charge pumping. In certain aspects, a control circuit of the voltage booster is coupled to a voltage source that is independent of an output voltage of the amplifier.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: April 15, 2025
    Assignee: QUALCOMM INCORPORATED
    Inventors: Darshan Chandrashekhar Pande, Chulkyu Lee, Sajin V Mohamad, Suresh Naidu Lekkala
  • Patent number: 12273038
    Abstract: A resonant flyback power converter includes: a first transistor and a second transistor which are configured to switch a transformer and a resonant capacitor for generating an output voltage; and a switching control circuit generating first and second driving signals for controlling the first and the second transistors. The turn-on of the first driving signal magnetizes the transformer. The second driving signal includes a resonant pulse having a resonant pulse width and a ZVS pulse during the DCM operation. The resonant pulse is configured to demagnetize the transformer. The resonant pulse has a first minimum resonant period for a first level of the output load and a second minimum resonant period for a second level of the output load. The first level is higher than the second level and the second minimum resonant period is shorter than the first minimum resonant period.
    Type: Grant
    Filed: April 14, 2023
    Date of Patent: April 8, 2025
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Yu-Chang Chen, Ta-Yung Yang, Kun-Yu Lin, Hsin-Yi Wu
  • Patent number: 12273039
    Abstract: A resonant flyback power converter includes: a first transistor and a second transistor which are configured to switch a transformer and a resonant capacitor for generating an output voltage; and a switching control circuit generating first and second driving signals for controlling the first and the second transistors. The turn-on of the first driving signal magnetizes the transformer. During a DCM (discontinuous conduction mode) operation, the second driving signal includes a resonant pulse for demagnetizing the transformer and a ZVS (zero voltage switching) pulse for achieving ZVS of the first transistor. The resonant pulse is skipped when the output voltage is lower than a low-voltage threshold.
    Type: Grant
    Filed: April 14, 2023
    Date of Patent: April 8, 2025
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Yu-Chang Chen, Ta-Yung Yang, Kun-Yu Lin, Hsin-Yi Wu
  • Patent number: 12261438
    Abstract: A device controls a power flow in an AC network and has a series converter with a DC side to connect to a DC link and an AC side to connect to the AC network via a series transformer. The device further has a bridging arrangement between the series transformer and the series converter configured to bridge the series converter. The bridging arrangement contains at least one bridging branch having a switching unit with antiparallel thyristors and a resistance in series with the switching unit. Furthermore, a method of operation operates the device.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: March 25, 2025
    Assignee: Siemens Energy Global GmbH & Co. KG
    Inventors: Lutz Hanel, German Kuhn, Christian Pfeifer, Martin Pieschel, Kunal Sharma, Maximilian Dürre, Michael Karl
  • Patent number: 12261536
    Abstract: A power supply device for suppressing noise includes a first bridge rectifier, a second bridge rectifier, a coupling inductive element, a first power switch element, a first output stage circuit, a switch circuit, a transformer, a second output stage circuit, and an auxiliary control circuit. The first bridge rectifier and second bridge rectifier generate a first rectified voltage and a second rectified voltage according to a first input voltage and a second input voltage. The coupling inductive element receives the first rectified voltage and the second rectified voltage. The switch circuit generates a control voltage. The second output stage circuit generates an output voltage. The auxiliary control circuit includes a second power switch element. The second power switch element is coupled to the coupling inductive element, and is selectively enabled or disabled according to the control voltage.
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: March 25, 2025
    Assignee: ACER INCORPORATED
    Inventor: Tzu-Tseng Chan
  • Patent number: 12249925
    Abstract: A power supply includes an inverter configured to convert direct current (DC) power into alternating current (AC) power, an impedance matching circuit configured to supply the AC power to a load, and a controller configured to detect a delay time of an output voltage and an output current output to the impedance matching circuit and the load and to adjust a frequency of the output voltage according to the detected delay time.
    Type: Grant
    Filed: March 15, 2024
    Date of Patent: March 11, 2025
    Assignee: EN2CORE TECHNOLOGY, INC.
    Inventors: Yeong-Hoon Sohn, Se-Hong Park, Sae-Hoon Uhm
  • Patent number: 12249923
    Abstract: A power supply includes an inverter configured to convert direct current (DC) power into alternating current (AC) power, an impedance matching circuit configured to supply the AC power to a load, and a controller configured to detect a delay time of an output voltage and an output current output to the impedance matching circuit and the load and to adjust a frequency of the output voltage according to the detected delay time.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: March 11, 2025
    Assignee: EN2CORE TECHNOLOGY, INC.
    Inventors: Yeong-Hoon Sohn, Se-Hong Park, Sae-Hoon Uhm
  • Patent number: 12231038
    Abstract: A power conversion device includes: a transformer in which power supply to a primary winding by an inverter circuit is performed; a rectifier circuit to rectify alternating voltage generated in a secondary winding of the transformer with rectifier elements; a smoothing reactor to smooth the rectified voltage; a first main circuit line which connects the smoothing reactor and an output end; a second main circuit line which connects the rectifier circuit and the output end; and a smoothing capacitor connected between the first main circuit line and the second main circuit line. An upper surface of the first main circuit line on which the smoothing capacitor is mounted and an upper surface of the second main circuit line on which the smoothing capacitor is mounted are provided on an identical plane. The rectifier element is connected to the upper surface of the second main circuit line.
    Type: Grant
    Filed: October 17, 2022
    Date of Patent: February 18, 2025
    Assignee: Mitsubishi Electric Corporation
    Inventor: Wataru Aoki
  • Patent number: 12231062
    Abstract: Disclosed are a high-voltage three-phase four-bridge-arm topology structure and an inverter. The topology structure includes four bridge-arm circuits and a converter; one end of first bridge-arm circuit is connected to an A-phase high voltage line and the other end is connected to a first conversion module, one end of second bridge-arm circuit to a B-phase high voltage line and the other end to a second conversion module; one end of third bridge-arm circuit to a C-phase high voltage line and the other end to a third conversion module; one end of fourth bridge arm circuit to a ground line and the other end to a fourth conversion module, and the fourth bridge arm circuit is used to perform voltage compensation on the output voltages of the first bridge arm circuit, second bridge arm circuit, and third bridge arm circuit when the three phase high voltage lines are unbalanced.
    Type: Grant
    Filed: July 8, 2024
    Date of Patent: February 18, 2025
    Assignee: Jiangsu Koyoe Energy Technology Co., Ltd.
    Inventors: Yong Yang, Jianliang Mao, Lingfeng Mao, Junlong Ding, Pan Wang, Xiaohu Fan, Huiqing Wen, Weiguo Huang
  • Patent number: 12231055
    Abstract: By effectively reducing a wire inductance on each of busbars, surge voltage based on the wire inductance is reduced. A semiconductor module includes a switching circuit composed of a first semiconductor element and a second semiconductor element connected in series, a first busbar to which a positive electrode side of the first semiconductor element is connected, a second busbar to which a negative electrode side of the second semiconductor element is connected, and a third busbar to which a negative electrode side of the first semiconductor element and a positive electrode side of the second semiconductor element are connected. The first busbar, the second busbar, and the third busbar extend in a same direction. The second busbar is disposed such that the third busbar and the first busbar are interposed within the second busbar.
    Type: Grant
    Filed: January 10, 2023
    Date of Patent: February 18, 2025
    Assignee: Mitsubishi Electric Corporation
    Inventor: Tetsuro Fujiwara
  • Patent number: 12231059
    Abstract: To improve voltage balancing at the DC link capacitor voltages of a multi-level inverter with a split DC link a modulation signal with a modulation signal amplitude as even harmonic signal of the output voltage or output current of the inverter is calculated from an actual electric power difference of the actual electric powers at the DC link capacitors and is superimposed onto the setpoint value for setting an output voltage or output current of the inverter.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: February 18, 2025
    Assignee: Fronius International GmbH
    Inventors: Richard Grasböck, Michael Rothboeck, Roland Pieler, Harald Kreuzer
  • Patent number: 12224661
    Abstract: 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: Grant
    Filed: October 31, 2023
    Date of Patent: February 11, 2025
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Penglin Yang, Yuan Lin
  • Patent number: 12224662
    Abstract: An LLC resonant converter with variable turns ratio includes a switching circuit coupled to a DC input voltage for converting the DC voltage into switching signal, a resonant tank coupled to the switching circuit and configured to receive the switching signal to provide a primary current, a transformer circuit coupled to the resonant tank. The transformer circuit includes a plurality of separated transformers, each has a primary side winding and a side secondary side winding, where individual transformer has different turns of primary side winding, which can be dynamically selected to couple with the primary side winding of other transformers in series or in parallel to form a dynamically changing equivalent primary side winding, so that the turns ratio in the transformer circuit can be dynamically changed accordingly.
    Type: Grant
    Filed: October 15, 2022
    Date of Patent: February 11, 2025
    Assignee: PHIHONG TECHNOLOGY CO., LTD.
    Inventors: Chun-Chen Chen, Jian-Hsieng Lee, Yao-Chun Tung
  • Patent number: 12218588
    Abstract: A front-end architecture system includes a system voltage input and a controller electrically connected to the system voltage input. The controller is configured and adapted to provide a voltage output to at least one controller output. The controller includes a single-ended primary-inductor converter (SEPIC) and a monitoring and switchover circuit. A method for controlling a voltage input to a low-voltage power supply (LVPS) includes receiving a system voltage input with a controller, wherein the controller includes a single-ended primary-inductor converter (SEPIC) and a monitoring and switchover circuit. The method includes providing a voltage output of the controller to at least one controller output. The method includes receiving the voltage output with a low-voltage power supply (LVPS) electrically connected to the at least one controller output.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: February 4, 2025
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Shobha Ramanjani
  • Patent number: 12218597
    Abstract: A power supply includes a controller. The controller controls switching of a first switch and a second switch in a power supply to regulate conveyance of energy from a primary winding of a transformer to a secondary winding of the transformer to generate an output voltage. To control generation of the output voltage, the controller receives a first signal generated at a first node coupling the first switch and the second switch. As discussed herein, the controller controls activation of the first switch to an ON state depending on a magnitude of the first signal. This disclosure provides improved reliability of power supply components (such as one or more switches) because such components are no longer stressed (or overstressed) due to body diode cross conduction.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: February 4, 2025
    Assignee: Infineon Technologies Austria AG
    Inventors: Alfredo Medina-Garcia, Martin Krueger
  • Patent number: 12218573
    Abstract: A control circuit for a DC-DC converter has an adaptive voltage position (AVP) control circuit and a switching control circuit. The AVP control circuit generates a position signal based on an output voltage, an output current, a voltage identification code and a set of adaptive voltage control commands. The switching control circuit generates a switching control signal based on the position signal to control the DC-DC converter. When the output current is smaller than a current threshold, the control circuit chooses one of a first voltage position curve and a second voltage position curve as a load line according to the set of adaptive voltage control commands, and when the output current is larger than the current threshold, the control circuit chooses the remaining voltage position curve as the load line according to the set of adaptive voltage control commands.
    Type: Grant
    Filed: October 14, 2022
    Date of Patent: February 4, 2025
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Lijie Jiang, Fangyu Zhang, Ming Chen