Patents Examined by Kyle J Moody
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Patent number: 12093064Abstract: A low-dropout linear regulator regulates a supply voltage and includes a voltage-to-frequency circuit producing a pulse chain with a frequency based on an error voltage. A charge pump circuit receives the pulse chain and switching one or more charge pumps based on the pulse chain. A current mirror circuit is connected to the charge pump circuit and includes a first diode-connected metal-oxide semiconductor (MOS) transistor, and a second MOS transistor having a first terminal connected to the supply voltage, a second terminal providing an output, and a gate connected to the gate of the first MOS transistor. The output is fed back to the voltage-to-frequency circuit.Type: GrantFiled: June 16, 2022Date of Patent: September 17, 2024Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventor: Alexander Heubi
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Patent number: 12095374Abstract: A system for controlling a skip mode of a switching power supply and a PWM controller are provided. The system includes a feedback signal detection circuit configured to detect an output voltage of the switching power supply and generate a feedback signal related to the output voltage; a primary winding sampling circuit coupled with a primary winding of the switching power supply and configured to sample a sampling voltage of the primary winding; a skip mode soft control circuit configured to receive the feedback signal and output an electrical signal; and a comparison circuit configured to determine a threshold for the sampling voltage, where the skip mode is activated when the feedback signal is greater than a soft activation voltage threshold, and the skip mode is pre-exited when the feedback signal is less than a predetermined voltage threshold and greater than a soft exit voltage threshold.Type: GrantFiled: August 30, 2022Date of Patent: September 17, 2024Assignee: BCD SHANGHAI MICRO-ELECTRONICS COMPANY LIMITEDInventors: Andong Zhao, Bo Chen, Guanghui He, Cong Zou, Sen Dou, Zheng Ying, Yizhong Xie
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Patent number: 12088202Abstract: A buck-boost converter includes a voltage input terminal, a voltage output terminal, a first switch, a second switch, an inductor, a third switch, and an auxiliary capacitor. The first switch includes a first terminal coupled to the voltage input terminal, and a second terminal. The second switch includes a first terminal coupled to the voltage output terminal, and a second terminal. The inductor is coupled between the second terminal of the first switch and the second terminal of the second switch. The third switch includes a first terminal coupled to the second terminal of the second switch, and a second terminal. The auxiliary capacitor is coupled to the second terminal of the third switch.Type: GrantFiled: August 31, 2021Date of Patent: September 10, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Stefan Alexander Reithmaier, Johann Erich Bayer, Rüdiger Ganz
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Patent number: 12088183Abstract: An electrical system may include an electronic control unit (ECU), a load driver connected to the ECU and configured to selectively provide a first electrical connection between a power source and a load, and/or a secondary power circuit connected to the ECU and configured to selectively provide a second electrical connection between said power source and said load. The secondary power circuit may include a wake-up circuit including a wake-up circuit switch, a trigger circuit including a trigger circuit switch, a sensing circuit including a sensing circuit switch; a switching circuit including a switching circuit switch; and/or a disable circuit connected to the ECU. The ECU may be configured to control the disable circuit to selectively open the switching circuit switch. The disable circuit may include a first disable circuit switch connected to ground and a second disable circuit switch connected to the switching circuit switch.Type: GrantFiled: October 19, 2021Date of Patent: September 10, 2024Assignee: Lear CorporationInventors: Lorenzo Blasco Gonzalez, Fernando Gallego
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Patent number: 12088196Abstract: A power expanding apparatus for three-phase LLC circuit is disclosed, which includes full-bridge switching networks, resonant networks, transformer networks, and rectifying networks. A primary side of a first transformer network is connected with an input voltage sequentially through a first resonant network and a first full-bridge switching network, a secondary side of the first transformer network is connected with a load through a first rectifying network; a primary side of a second transformer network is connected with the input voltage sequentially through a second resonant network and a second full-bridge switching network, and a secondary side of the second transformer network is connected with the load through a second rectifying network. Secondary sides of two transformer units in the first transformer network are in star-type connection with a secondary side of one transformer unit in the second transformer network.Type: GrantFiled: April 16, 2024Date of Patent: September 10, 2024Assignee: SHENZHEN UUGREENPOWER CO., LTD.Inventors: Xiaoliang Guo, Jianguo Bai, Zhenghai Wan, Likuan Deng
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Patent number: 12081109Abstract: A control circuit for a switching converter having a main power switch and an auxiliary power switch, where the control circuit is configured to: charge and discharge a junction capacitor of the main power switch during a turn-off period of the main power switch; and adjust a conduction time of the auxiliary power switch according to a difference between the charged and discharged charge levels across the junction capacitor.Type: GrantFiled: December 6, 2021Date of Patent: September 3, 2024Assignee: Silergy Semiconductor Technology (Hangzhou) LTDInventors: Hongbin Lai, Jianxin Wang
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Patent number: 12081122Abstract: In an embodiment, a switching converter includes: a switching stage configured to receive a direct current input voltage, receive a driving signal for driving the switching stage, and provide a direct current output voltage according to the input voltage and the driving signal; a driving stage configured to provide the driving signal to the switching stage; a current sensing circuit configure to sense an output current provided by the switching stage; and a voltage generation circuit configured to generate at least one supply voltage for powering the driving stage, and adjust the at least one supply voltage according to the output current.Type: GrantFiled: November 22, 2021Date of Patent: September 3, 2024Assignee: STMICROELECTRONICS S.R.L.Inventors: Niccolo′ Brambilla, Sandro Rossi, Valeria Bottarel, Alessandro Nicolosi
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Patent number: 12074528Abstract: A secondary-side-controller for a QR flyback converter and method for operating the same are provided. Generally, the secondary-side-controller includes a driver configured to control a power-switch (PS) on a primary side of converter to turn on the PS when a sinusoidal input voltage to the converter is at one of a plurality of valleys, an analog-to-digital-converter (ADC) to read the input voltage, output voltage, and load current, and generate digital signals based thereon. A valley-controller coupled to the driver, ADC, a look-up-table and a pulse width modulator (PWM) receives the signals from the ADC and using the look-up-table determines at which valley of the plurality of valleys to couple a PWM signal from the PWM to the driver. The valley-controller is operable for each switching cycle of the PS to increment, decrement or leave unchanged the valley at which the PWM signal is coupled from the PWM to the driver.Type: GrantFiled: January 13, 2022Date of Patent: August 27, 2024Assignee: Cypress Semiconductor CorporationInventors: Pulkit Shah, Arun Khamesra, Hariom Rai, Aniket Shashikant Mathad, Kailas Narayana Iyer
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Patent number: 12074209Abstract: An overcurrent fault detector using a High Electron Mobility Transistor (HEMT) operated by a gate driver is disclosed. The overcurrent fault detector includes a band-pass filter and a control circuit. The band-pass filter is configured to receive gate-to-source voltage (VGS) signals of the HEMT and filter the VGS signals to generate a band-limited version of the VGS signals. The control circuit is configured to measure a value of the band-limited version of the VGS signals, determine if the value is greater than a threshold value, and generate a fault signal that disables the gate driver and terminates an overcurrent fault condition in response to determining that the value is greater than the threshold value.Type: GrantFiled: September 8, 2021Date of Patent: August 27, 2024Assignee: ABB SCHWEIZ AGInventors: Xiaoqing Song, Utkarsh Raheja, Pietro Cairoli, Jing Xu
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Patent number: 12074534Abstract: There is provided methods and apparatus configured to provide electrical converter control parameters, the apparatus comprising: a Structured H-infinity tuning module configured to determine one or more control parameters, for a model of an electrical converter control system and grid, based on variation of one or more grid parameters; and an output module configured to provide the one or more control parameters for implementation in the electrical converter control system.Type: GrantFiled: September 4, 2020Date of Patent: August 27, 2024Assignee: Power Nova Technology LimitedInventors: Masoud Bazargan, Sajjad Fekriasl, Sean Kelly, Andre Paulo Canelhas
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Patent number: 12074538Abstract: A power converter includes a connection path electrically connecting a negative side of a first rechargeable battery, a positive side of a second rechargeable battery electrically connected in series with the first rechargeable battery, and a neutral point of windings of a rotating electric machine. The power converter further includes a control unit configured to perform switching control of an upper-arm switch and a lower-arm switch for each phase in order to transfer energy between the first and second rechargeable batteries by conducting current between the first and second rechargeable batteries via an inverter, the windings, and the connection path.Type: GrantFiled: April 4, 2022Date of Patent: August 27, 2024Assignee: DENSO CORPORATIONInventors: Seiji Iyasu, Syusei Nishimura, Atsushi Fukaya
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Patent number: 12068696Abstract: Operation of a switching power converter, such as to reduce voltage spikes on the secondary side of switching power converters. One example is a method of operating a switching power converter, the method comprising: sensing, by a controller of a switching power converter, a strength-selection signal; and driving, by the controller within a plurality of switching cycles, a control input of a primary electrically-controlled switch, the driving in each switching cycle at a drive strength based on the strength-selection signal.Type: GrantFiled: September 16, 2021Date of Patent: August 20, 2024Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Ajay Karthik Hari, Alan David Finkel
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Patent number: 12068682Abstract: Uncompensated upper and lower reference-currents are generated for first and second branches of a high-frequency half-bridge within an interleaved-totem-pole PFC.Type: GrantFiled: July 25, 2022Date of Patent: August 20, 2024Assignee: STMicroelectronics S.r.l.Inventors: Sebastiano Messina, Marco Torrisi
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Patent number: 12068689Abstract: A power converter device is provided. A feedback circuit outputs a comparison output signal. A phase-locked loop circuit provides a phase-locked signal according to a reference clock signal and an inductor voltage in a power converter circuit. An on-time circuit provides an on-time comparing signal according to the phase-locked signal, an input voltage, the inductor voltage and an output voltage of the power converter circuit. A first input terminal of an SR flip-flop receives the on-time comparing signal from the on-time circuit. A second input terminal of the SR flip-flop receives the comparison output signal from the feedback circuit. A frequency control circuit, according to changes in the input voltage and the output voltage of the power converter circuit, instantaneously adjusts the on-time of the on-time signal such that an output terminal of the SR flip-flop outputs the adjusted on-time signal to the power converter circuit.Type: GrantFiled: June 6, 2022Date of Patent: August 20, 2024Assignee: ANPEC ELECTRONICS CORPORATIONInventors: Jen-Chien Hsieh, Tsung-Yu Wu
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Patent number: 12062977Abstract: An electrical conversion apparatus for use in current shaping comprising at least two capacitors connected in series between first and second lines, a first diode connected in parallel across the first capacitor, a second diode connected in parallel across the second capacitor, and a constant current device connected in series with the first and second capacitors.Type: GrantFiled: February 4, 2021Date of Patent: August 13, 2024Assignee: Pulsiv LimitedInventor: Mohammed Ahmed
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Patent number: 12061493Abstract: A low power hybrid reverse (LPHR) bandgap reference (BGR) and digital temperature sensor (DTS) or a digital thermometer, which utilizes subthreshold metal oxide semiconductor (MOS) transistor and the PNP parasitic Bi-polar Junction Transistor (BJT) device to form a reverse BGR that serves as the base for configurable BGR or DTS operating modes. The LPHR architecture uses low-cost MOS transistors and the standard parasitic PNP device. Based on a reverse bandgap voltage, the LPHR can work as a configurable BGR. By comparing the configurable BGR with the scaled base-emitter voltage, the circuit can also perform as a DTS with a linear transfer function with single-temperature trim for high accuracy.Type: GrantFiled: September 25, 2020Date of Patent: August 13, 2024Assignee: Intel CorporationInventors: You Li, David Duarte, Yongping Fan
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Patent number: 12062973Abstract: An integrated circuit (IC) for controlling a power converter. The IC includes a controller that, in a first sensing period, enables a sensing circuit of the power converter and electrically connects an output node of an op amp of the sensing circuit and a first node of a capacitor of the sensing circuit, creating a first voltage across the capacitor; in a period between the first sensing period and a second sensing period, disables the sensing circuit and disconnects the output node of the op amp and the first node of the capacitor to maintain the first voltage across the capacitor; and in the second sensing period, enables the sensing circuit and connects the output node of the op amp and the first node of the capacitor, the maintained first voltage across the capacitor reducing a settling time for the enabled sensing circuit.Type: GrantFiled: March 25, 2022Date of Patent: August 13, 2024Assignee: pSemi CorporationInventors: Tim Wen Hui Yu, Gregory Szczeszynski
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Patent number: 12062995Abstract: Described embodiments include a rectifier circuit comprising a first resistor with first and second resistor terminals, and a second resistor with third and fourth resistor terminals. The first and third resistor terminals are coupled to an auxiliary power terminal. A current source is coupled between the second resistor terminal and a ground terminal. An amplifier has a first amplifier input coupled to the second resistor terminal, and a second amplifier input coupled to the fourth resistor terminal. A first transistor is coupled between the fourth resistor terminal and a damping terminal, and has a first control terminal coupled to the first amplifier output. A gate drive circuit has an input coupled to the damping terminal. A second transistor is coupled between the damping terminal and a bootstrap supply terminal, and has a second control terminal coupled to an output of the gate drive circuit.Type: GrantFiled: July 26, 2022Date of Patent: August 13, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Michael Lueders, Cetin Kaya, Johan Strydom, Paul Brohlin
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Patent number: 12062983Abstract: The present invention generally relates to a modular high power bi-directional half bridge buck/boost converter assembly and, in particular, to a system for converting power from one form of current (either AC or DC) to a differing level of voltage, either lower (buck) or higher (boost), to output a wave signal based on pulse wave modulation (PWM) switching control by means of an external digital controller and methods of operation. In particular, an inverter-converter system includes at least one half bridge module including a plurality of circuit components, at least one inductor which is connected to the at least one half bridge module and a power supply, and a controller which is configured to receive and send instructions to the at least one half bridge module for converting an input voltage to an output voltage and dynamically tune switching frequencies based on a load of the inverter-converter system.Type: GrantFiled: November 8, 2021Date of Patent: August 13, 2024Assignee: Pacific Energy Inc.Inventors: David Md Kim, Philip Edmund Schaefer, German Rafael Nielsen Lopez, Matthew Jordan Serrano
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Patent number: 12057784Abstract: A power electronics converter includes a substrate and a converter commutation cell including a power circuit. The power circuit includes at least one power semiconductor switching element and at least one capacitor. Each power semiconductor switching element is comprised in a power semiconductor prepackage. An electrical connection side of the respective power semiconductor prepackage is spaced apart in a z direction from the substrate so as to define a prepackage gap between the substrate and the electrical connection side. At least a portion of the prepackage gap is filled with an electrically insulating material having voids. A converter parameter ? defined as an insulation fill factor divided by a maximum void size is greater than or equal to 10/mm. The insulation fill factor is defined as a cumulated volume of the voids subtracted from a volume of the electrically insulating material divided by the volume of the electrically insulating material.Type: GrantFiled: June 21, 2023Date of Patent: August 6, 2024Assignee: Rolls-Royce Deutschland Ltd & Co KGInventors: Stanley Buchert, Uwe Waltrich