With Threshold Detection Patents (Class 323/284)
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Patent number: 12234022Abstract: An example system includes an electrical machine electrically configured to generate electrical energy used by one or more components of a gas-turbine engine; an energy storage system; and a controller electrically connected to the energy storage system and configured to receive electrical energy from the energy storage system, wherein, in response to the gas-turbine engine being shut off, the controller is configured to cause the electrical machine to rotate a rotor of the gas-turbine engine using the energy received from the energy storage system.Type: GrantFiled: August 12, 2022Date of Patent: February 25, 2025Assignees: Rolls-Royce North American Technologies, Inc., Rolls-Royce picInventors: Peter Schenk, Mark Angelo Tanner
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Patent number: 12230957Abstract: An electric power network includes: a plurality of power routers each including a plurality of power ports; a plurality of interconnection lines configured to connect the power routers in a grid manner via the power ports; and an electric power apparatus configured to consume or supply electric power, the electric power apparatus being connected to a power port that is included in at least one of the power routers and that is not connected to any of the interconnection lines. At least one of the power ports of each of the power routers is set as a dependent port for which characteristics of direct-current power to be input or output are not controlled.Type: GrantFiled: May 31, 2022Date of Patent: February 18, 2025Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Masahiro Rikiso, Sumio Kachi, Hideto Nakamura, Kengo Nakao
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Patent number: 12224667Abstract: A voltage regulation apparatus and an overcurrent protection method are disclosed. The voltage regulation apparatus includes a current detection control circuit, a power stage circuit, a voltage input terminal, and a voltage output terminal. The power stage circuit includes at least one transistor. Because a current parameter indicates a load current of the at least one transistor, and a plurality of preset overcurrent protection thresholds are dynamic overcurrent protection thresholds obtained after being preset based on temperature information and the like, after obtaining the current parameter, the current detection control circuit compares the current parameter with the plurality of preset overcurrent protection thresholds, to output a control signal, to implement a limiting operation on the current parameter.Type: GrantFiled: December 29, 2022Date of Patent: February 11, 2025Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Zhangrong Hu, Xuegang Yang, Kun Wu, Yi Wang
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Patent number: 12218594Abstract: A control circuit and method, wherein an error signal is generated representative of a difference between an output voltage of a switching circuit and a nominal signal; a single control signal is generated, representative of an average error of the error signal; the single control signal is compared with a first periodic reference signal and a second periodic reference signal; a first pulse width modulated signal is generated by a Buck modulator; and a second pulse width modulated signal is generated by a Boost modulator. The maximum value of the first periodic reference signal and the minimum value of the second periodic reference signal are higher and lower, respectively, than the single control signal in a transient control mode between a Buck control mode and a Boost control mode.Type: GrantFiled: August 7, 2020Date of Patent: February 4, 2025Assignee: STMicroelectronics S.r.l.Inventors: Manuela La Rosa, Giovanni Sicurella
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Patent number: 12212225Abstract: A semiconductor device includes high-side and low-side switching elements connected in series to form a switching arm, a high-side driver IC for driving the high-side switching element, and, on a chip separate from the high-side switching element, a low-side driver IC for driving the low-side switching element. The driver IC includes a first controller for monitoring a switching voltage appearing at the node where the high-side and low-side switching elements are connected together. When a first driving control signal fed in from outside the semiconductor device instructs to turn on the high-side switching element, the first controller determines whether or not to permit the high-side switching element to be turned on based on a result of checking the switching voltage.Type: GrantFiled: August 26, 2020Date of Patent: January 28, 2025Assignee: Rohm Co., Ltd.Inventor: Hideo Hara
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Patent number: 12203966Abstract: The present disclosure provides an alternating current (AC)/direct current (DC) voltage detection circuit, which includes a rising edge trigger circuit and a detection and output circuit connected to an output terminal of the rising edge trigger circuit. When the detection and output circuit detects that the output signal of the rising edge trigger circuit undergoes preset m target flips in M consecutive clock periods, the detection and output circuit generates an AC determination signal, where m is a natural number.Type: GrantFiled: October 13, 2023Date of Patent: January 21, 2025Assignee: Hypower Microelectronics (Wuxi) Co., Ltd.Inventor: Ning Zhu
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Patent number: 12199580Abstract: Disclosed are systems and methods for a variable-gain differentiator in series with at least two non-inverting amplifiers. The variable-gain differentiator is connected to a voltage-controlled source at its non-inverting input and to its output at its inverting input. The output is connected to the non-inverting input of the first non-inverting amplifier. The output of the first non-inverting amplifier is connected to the input of the second non-inverting amplifier. The output of the second non-inverting amplifier is connected to a series of three integrators. Each integrator is connected to its output by a feedback path. Varying the gain of the voltage-controlled amplifier varies the gain of the differentiator at the output of the third integrator, thereby varying the output of the system.Type: GrantFiled: January 27, 2022Date of Patent: January 14, 2025Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventor: Salim Ibrir
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Patent number: 12199511Abstract: In an embodiment, a voltage converter is configured to operate by a succession of operating cycles, each cycle comprising an energy accumulation phase and an energy restitution phase, wherein the converter is further configured to determine a duration of one of the phases by comparing a voltage ramp and a first reference voltage, and wherein a slope of the voltage ramp depends on a sign of a current in an inductor at an end of a previous operating cycle.Type: GrantFiled: February 24, 2022Date of Patent: January 14, 2025Assignee: STMicroelectronics (Rousset) SASInventors: Sebastien Ortet, Didier Davino, Remi Collette
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Patent number: 12191805Abstract: A method for electrically characterising a cut photovoltaic cell, includes measuring the feature I-V of the uncut cell; cutting the cell into a plurality of sub-cells; measuring the feature I-V of each sub-cell not electrically connected to the other sub-cells; measuring the feature I-V of a set comprising all the sub-cells connected in parallel; determining, on the basis of the measured features I-V, performance parameters of the uncut cell, of each sub-set and of the set; computing, for each sub-cell, the difference between the value of the performance parameters of the sub-cell and that of the performance parameter of the uncut cell; and computing the difference between the value of the performance parameter of the set and the value of the performance parameter of the uncut cell.Type: GrantFiled: June 9, 2020Date of Patent: January 7, 2025Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Julien Eymard, Felix Gerenton, Samuel Harrison, Maria-Delfina Munoz
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Patent number: 12176804Abstract: The present disclosure relates to a voltage converter and method for pulse frequency modulation-type operation during a start-up phase.Type: GrantFiled: January 5, 2022Date of Patent: December 24, 2024Assignee: STMicroelectronics (Rousset) SASInventors: Sebastien Ortet, Vincent Binet
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Patent number: 12176913Abstract: An analog-to-digital converter may comprise a code voltage generating part that generates a conversion code voltage according to the conversion digital code; a voltage comparing part that generates a comparison result signal by comparing the input analog voltage and the conversion code voltage; a shifting register that receives a clock signal and generates a 1-st to a n-th control pulse signals; and a code generating part that generates the conversion digital code with receiving by comparison result signal and the 1-st to the n-th control pulse signals.Type: GrantFiled: December 1, 2022Date of Patent: December 24, 2024Assignee: FIDELIX CO., LTD.Inventor: Jae Jin Lee
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Patent number: 12164322Abstract: Techniques and mechanisms for determining an operational mode of a voltage regulator. In an embodiment, an integrated circuit (IC) die is coupled to receive power from a voltage regulator (VR) via a power delivery network (PDN) which comprises circuitry in or on a substrate, such as that of a printed circuit board. The IC die receives from the substrate information indicating a characteristic of a parasitic impedance at the substrate. Based on the information, a controller unit at the IC die selects one of multiple VR modes which each correspond to a respective one of different parasitic impedance characteristics. The controller then signals the VR to provide the selected mode. In an embodiment one of the VR modes corresponds to a relatively high impedance, and also corresponds to a relatively stable sensitivity function in a frequency range above a control bandwidth.Type: GrantFiled: June 25, 2021Date of Patent: December 10, 2024Assignee: Intel CorporationInventors: Amit K. Jain, Mauricio Aguilar Salas, Jonathan Douglas, Anant Deval
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Patent number: 12155473Abstract: A physical layer transceiver (PHY) includes transmit circuitry including digital and analog transmit portions, receive circuitry including digital and analog receive portions, coupling circuitry configured to couple signals from the transmit circuitry onto a transmission medium, and to couple signals off the transmission medium to the receive circuitry, and transient error compensation circuitry coupled to the digital receive portions and to the analog transmit portions, and configured to detect transient error induced in the receive circuitry by the analog transmit portions and to subtract a transient error correction from data in the receive circuitry. The PHY may include asymmetric Energy-Efficient Ethernet (EEE) controller circuitry, and when the transmit circuitry is in the leg operating in EEE low-power-idle mode, the transient error compensation circuitry may detect transient error induced in the receive circuitry of the leg operating in full-data mode and apply a transient error correction.Type: GrantFiled: May 23, 2023Date of Patent: November 26, 2024Assignee: Marvell Asia Pte LtdInventors: Seid Alireza Razavi Majomard, Ehab Tahir
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Patent number: 12149162Abstract: A power converter includes a plurality of power switches connected in series between a system ground and an input voltage bus, wherein an upper power switch located between the input voltage bus and an output terminal of the power converter, and immediately adjacent to the output terminal of the power converter is configured as an isolation switch including two back-to-back connected diodes and a bulk terminal, and wherein a connection of the bulk terminal is reconfigurable, and a driver configured to drive the upper power switch immediately adjacent to the output terminal of the power converter.Type: GrantFiled: September 20, 2022Date of Patent: November 19, 2024Assignee: Halo Microelectronics InternationalInventors: Suming Lai, Kenneth Chung-Yin Kwok
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Patent number: 12143018Abstract: Disclosed is a DC voltage converter, including a plurality of dividing modules positioned in parallel and synchronized in an interleaved manner, all the dividing modules being controlled by one and the same error signal sampled for each dividing period.Type: GrantFiled: March 18, 2020Date of Patent: November 12, 2024Assignee: VITESCO TECHNOLOGIES GMBHInventor: Philippe Boissiere
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Patent number: 12142999Abstract: A controller for a power converter includes an output terminal operative to output a modulation signal for controlling a phase current of the power converter. A modulator is operative to generate the modulation signal such that an output voltage of the power converter follows a first portion of a load-line when load current is above a first threshold, the first portion of the load-line having a first slope that determines a rate of change of the output voltage as a function of the load current. An interface is operative to receive a temperature signal. Circuitry is operative to change the first threshold in response to receipt of the temperature signal.Type: GrantFiled: April 1, 2021Date of Patent: November 12, 2024Assignee: INFINEON TECHNOLOGIES AUSTRIA AGInventors: Jayadevan Radhakrishnan, Jens A. Ejury
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Patent number: 12136872Abstract: A drive circuit includes a rectification circuit, a buck converter, and an inverter. the rectification circuit is configured to rectify a first AC voltage signal to generate a rectified voltage signal. The buck converter is configured to downconvert the rectified voltage signal to a DC voltage signal, wherein the DC voltage signal is supplied to a DC bus. The inverter is configured to convert the DC voltage signal to a second AC voltage signal and supply the second AC voltage signal to a compressor motor and to a condenser fan motor. The peak voltages of the second AC voltage signal are less than peak voltages of the first AC voltage signal.Type: GrantFiled: June 24, 2022Date of Patent: November 5, 2024Assignee: Copeland LPInventor: Joseph G. Marcinkiewicz
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Patent number: 12136874Abstract: An electrical circuit for reducing electromagnetic noise or interference in a power converter. The circuit includes at least one shunt capacitor arranged to connect with a grounded component of the power converter, wherein the at least one shunt capacitor is further arranged to be driven by an active control signal so as to sink a noise current originating from a noise source to the grounded component of the power converter, wherein the noise source is connected to the grounded component via a capacitive path formed by at least one stray capacitors.Type: GrantFiled: June 30, 2021Date of Patent: November 5, 2024Assignee: City University of Hong KongInventors: Shu Hung Henry Chung, Kewei Wang
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Patent number: 12132396Abstract: The present invention provides a nitride-based power factor correction (PFC) circuit for improving power distribution efficiency from an AC power supply to a load. The PFC circuit comprises a nitride-based bidirectional switch and a controlling circuit having a first switching node and a second switching node electrically coupled to a first control terminal and a second control terminal of the bidirectional switch respectively. The provided nitride-based PFC circuit has high efficiency over a broad range of input voltage, a simpler circuit topology with smaller component size.Type: GrantFiled: March 4, 2022Date of Patent: October 29, 2024Assignee: INNOSCIENCE (SUZHOU) SEMICONDUCTOR CO., LTD.Inventors: Yanbo Zou, Fada Du, Chao Tang
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Patent number: 12113429Abstract: The controller for a system including a power converter may be configured to cause the system to operate in one of a low-power mode and the high-power mode based on power demand from a load at the output of the power converter and when in the low-power mode, monitor the output of the power converter to detect an occurrence of a load transient from the load and in response to detecting the occurrence of the load transient, transition from the low-power mode to the high-power mode via a transition mode to minimize undershoot and overshoot of the output voltage.Type: GrantFiled: March 10, 2023Date of Patent: October 8, 2024Assignee: Cirrus Logic Inc.Inventors: Siddharth Maru, Bryan McCoy, Chanchal Gupta, Rosario Pagano
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Patent number: 12113444Abstract: In an embodiment, a phase circuit includes: a bidirectional output stage configured to be coupled between a first battery and a second battery; a memory configured to store a number of active phases, and an identifier; and a synchronization circuit configured to receive a first clock signal and determine a start time of a switching cycle of the bidirectional output stage based on the number of active phases, the identifier, and the first clock signal, where the phase circuit is configured to control the timing of the switching of the bidirectional output stage based on the start time.Type: GrantFiled: July 1, 2022Date of Patent: October 8, 2024Assignees: STMicroelectronics S.r.l., STMicroelectronics (Rousset) SASInventors: Vanni Poletto, Antoine Pavlin
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Patent number: 12088185Abstract: In a voltage conversion circuit, a sampling signal and a triangular wave signal are synthesized into a first signal, and the first signal and a second signal are compared to output a pulse-width modulation (PWM) signal. A frequency of the PWM signal may be determined by a frequency of the triangular wave signal. Therefore, the frequency of the PWM signal is fixed using the frequency-fixed triangular wave signal. Turning on or switching off of a power transistor in a voltage conversion subcircuit is controlled according to the PWM signal to convert a received direct current input voltage into a direct current output voltage, thereby implementing a fixed operating frequency for the voltage conversion circuit.Type: GrantFiled: July 2, 2021Date of Patent: September 10, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Chen Huang, Qiang Xie, Liang Chen
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Patent number: 12081119Abstract: A control circuit is configured to control a switched capacitor converter to operate in a pulse frequency modulation (PFM) mode. The control circuit includes a one-shot circuitry configured to generate a one-shot pulse to drive the switched capacitor converter to operate in the PFM mode. A PFM mode comparator is coupled to the one-shot circuitry, and is configured to trigger, based on an output voltage of the switched capacitor converter, the one-shot circuitry to generate the one-shot pulse. The switched capacitor converter may be controlled to enter or exit the PFM mode operation based on a trailing current of a flying capacitor of the switched capacitor converter, an output current of the switched capacitor converter, a charging time duration of the flying capacitor when the switched capacitor converter is operating in the PFM mode, or a PFM switching period of the switched capacitor converter operating in the PFM mode.Type: GrantFiled: November 19, 2021Date of Patent: September 3, 2024Assignee: Halo Microelectronics InternationalInventor: Rui Liu
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Patent number: 12074520Abstract: A smart power stage module includes an output stage and a driving circuit. The output stage includes a low-side switch and provides an output current. The driving circuit controls an operation of the output stage according to a PWM signal. The driving circuit includes a determination circuit generating a control signal according to the PWM signal and a signal combination circuit providing a current monitoring signal representing the output current. The current monitoring signal is a combination of a simulated current signal and an actual sensed current signal. The signal combination circuit includes a switching circuit switching according to the control signal to adjust a proportion of simulated current signal and actual sensed current signal. When the on-time period part of low-side switch is shorter than a default time period, the switching circuit shortens duration of simulated current signal in the current monitoring signal according to the control signal.Type: GrantFiled: July 14, 2022Date of Patent: August 27, 2024Assignee: UPI SEMICONDUCTOR CORP.Inventors: Yow-Tsyr Liang, Heng-Li Lin
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Patent number: 12068686Abstract: A control circuit used in a switching converter having a switch and an inductor. The control circuit has an error amplifying circuit, a current comparing circuit, a clock generator and a constant OFF time generator. The error amplifying circuit receives a voltage reference signal and a voltage feedback signal indicative of an output voltage signal, and provides an error signal. The current comparing circuit compares the error signal with a current sensing signal indicative of a current flowing through the inductor, and provides a comparing signal to turn the switch OFF. When the switching converter is coupled to a filtering capacitor, the clock generator provides a clock signal to turn the switch ON, and when the switching converter is coupled to a super capacitor, the clock generator is disabled and the constant OFF time generator provides a constant OFF time signal to turn the switch ON.Type: GrantFiled: April 28, 2022Date of Patent: August 20, 2024Assignee: Chengdu Monolithic Power Systems Co., Ltd.Inventor: Yong Zhou
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Patent number: 12051965Abstract: A driver circuit includes an input node to receive an input signal for conversion at the output node of a converter, a driver node to provide to a switching power circuit stage in the converter a pulse-width modulated drive signal having an active time, first and second active time generation paths, and a selector circuit coupled to the first and second active time generation paths. The circuit is operable selectively in a first and a second operational mode wherein the driver node receives the pulse-width modulated drive signal having a first active time value generated in the first active time generation path, or a second active time value generated in the second active time generation path. The second active time generation path includes an active time generator network to provide a second active time value with the second active time value adaptively variable to match the first active time value.Type: GrantFiled: August 12, 2022Date of Patent: July 30, 2024Assignee: STMicroelectronics S.r.l.Inventors: Marco Borghese, Simone Bellisai
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Patent number: 12051936Abstract: Disclosed by present disclosure are a self-powered power supply drive circuit and a self-powered power supply drive chip. The self-powered power supply drive circuit includes a charging detection circuit, a current sampling switch tube, a charging switch tube, a sampling circuit and a control circuit. The drive tube and current sampling switch tube, which are connected in series, are connected between the input power supply and the ground. The current sampling switch tube is switched off and the charging switch tube is switched on during the pre-switching-off stage, such that the current which flows through the drive tube during the pre-switching-off stage is used to charge the energy storage circuit. The charging time is in the pre-switching-off stage, which never affects the normal switching cycle of the drive tube itself and the normal output of energy. Moreover, this way of charging does not require any additional auxiliary coil winding.Type: GrantFiled: July 20, 2022Date of Patent: July 30, 2024Assignee: Fremont Micro Devices CorporationInventors: Xueren Yang, Chong Huang, Kelvin Yupak Hui
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Patent number: 12046999Abstract: A DC-DC converter includes: a first switch; a second switch connected to the first switch; a mode selecting circuit to select a converting mode from one of at least a first mode and a second mode based on an input voltage; and a controller to generate a first switching control signal for controlling the first switch based on the converting mode, and a second switching control signal for controlling the second switch based on the converting mode.Type: GrantFiled: December 28, 2020Date of Patent: July 23, 2024Assignee: Samsung Display Co., Ltd.Inventor: Sung-Chun Park
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Patent number: 12040711Abstract: A multiphase converter provides an output voltage to a load. The multiphase converter receives a load event signal from the load and turns ON at a same time the phases of the multiphase converter to increase the output voltage in response to the load event signal indicating that a load current drawn by the load from the multiphase converter is about to increase. The multiphase converter increases an impedance of low-side switches of the multiphase converter in response to the load event signal indicating that the load current is about to decrease.Type: GrantFiled: May 5, 2022Date of Patent: July 16, 2024Assignee: Monolithic Power Systems, Inc.Inventors: Zhe Yang, Daocheng Huang, Faisal Ahmad, Odai Alsmadi
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Patent number: 12040693Abstract: A control circuit for controlling a DC-DC converter is provided. The control circuit comprises a first sensor, second sensor, error amplifier, signal conditioning circuit, first comparison circuit, second comparison circuit, and driver circuit. The error amplifier is configured to receive a feedback voltage and a reference voltage for generating a first voltage. The signal conditioning circuit is configured to receive the first voltage for generating a second voltage and a third voltage. The first comparison circuit is configured to make a comparison based on a first sensing signal from the first sensor and the second voltage for generating a first comparison signal. The second comparison circuit is configured to make a comparison based on a second sensing signal from the second sensor and the third voltage for generating a second comparison signal. The driver circuit is for driving a power stage according to the first and second comparison signals.Type: GrantFiled: July 25, 2022Date of Patent: July 16, 2024Assignee: ELITE SEMICONDUCTOR MICROELECTRONICS TECHNOLOGY INC.Inventor: Yao-Wei Yang
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Patent number: 12034365Abstract: An LLC converter includes a switching stage including primary transistors, a resonant stage connected to the switching stage, a transformer including a primary winding connected to the resonant stage and a secondary winding coupled with the primary winding, a rectifying stage connected to the secondary winding of the transformer and providing an output voltage of the LLC converter, and a controller configured and/or programmed to, during start-up, control the output voltage by switching the primary transistors based on a first reference voltage that exponentially increases during start-up and a second reference voltage that is based on a resonant current of the resonant stage.Type: GrantFiled: March 13, 2020Date of Patent: July 9, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Rubinic Jaksa
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Patent number: 12034410Abstract: Various methods and circuital arrangements for protection of a power amplifier from over voltage are presented. According to one aspect, a protection circuit coupled to a varying supply voltage of the power amplifier controls a biasing current to the power amplifier to limit a power dissipation through the power amplifier. An overvoltage protection circuit detects a level of the varying supply voltage and decreases the biasing current as a linear function of an increasing supply voltage once the supply voltage reaches a programmable voltage level. A slope of the linear function can be made programmable. Programmability of the voltage level and the slope can be used to control biasing currents to a plurality of power amplifiers operating at different times and having different requirements in terms of voltage limits and thermal breakdown. According to another aspect a voltage to current converter for use in the overvoltage protection circuit is presented.Type: GrantFiled: April 12, 2022Date of Patent: July 9, 2024Assignee: PSEMI CORPORATIONInventor: Shota Ishihara
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Patent number: 12027980Abstract: A switched mode power supply (SMPS) includes a first switch, a second switch connected, at a switching node, in series with the first switch, and an inductor coupled between the switching node and an output node for providing an inductor current, at the output node. The SMPS also includes an oscillator circuit for providing a clock signal characterized by an oscillating frequency, an adaptive minimum duty-cycle circuit configured to receive an error voltage signal and to generate a current signal to vary the oscillating frequency of the clock signal in response to the error voltage signal, wherein the error voltage signal is based on an output signal at the output node, and a pulse-width modulation (PWM) circuit configured to receive the error voltage signal and the clock signal and to provide a switching control signal to control the first switch and the second switch.Type: GrantFiled: September 6, 2023Date of Patent: July 2, 2024Assignee: DIODES INCORPORATEDInventors: Wenliang Chen, Jiansong Chen
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Patent number: 12019124Abstract: A calibration current load is selectively coupled to an output of a pulse frequency modulated (PFM) DC-DC converter during a calibration operation to increase charge supplied from a battery supplying an input voltage to the converter. A voltage across a sense resistor in series with the battery is integrated during a measurement interval while the calibration current load is coupled to the output. A charge drawn per pulse from the battery is determined based on the sense resistor, the integrated voltage and the number of pulses during the measurement interval. Alternatively, a first PFM frequency is determined with a first calibration current load coupled to the converter output. A second PFM frequency is determined with a second calibration current load. The charge drawn per pulse from the battery is determined based on the first and second PFM frequencies and the first and second calibration current loads.Type: GrantFiled: March 29, 2021Date of Patent: June 25, 2024Assignee: Silicon Laboratories Inc.Inventors: Jeffrey L. Sonntag, Timothy J. Dupuis, Jinwen Xiao
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Patent number: 12015350Abstract: A novel power supply apparatus (10) includes a microcontroller (102) and a plurality of voltage converters (104). If the voltage converters (104) are in a boost mode and a plurality of duty cycles of the voltage converters (104) calculated by the microcontroller (102) are less than 0.5, the microcontroller (102) is configured to limit at least one of the duty cycles of the voltage converters (104) to 0.5. If the voltage converters (104) are in a buck mode and the duty cycles of the voltage converters (104) calculated by the microcontroller (102) are greater than 0.5, the microcontroller (102) is configured to limit at least one of the duty cycles of the voltage converters (104) to 0.5.Type: GrantFiled: July 25, 2022Date of Patent: June 18, 2024Assignee: P-DUKE TECHNOLOGY CO., LTD.Inventors: Lien-Hsing Chen, Ta-Wen Chang, Hsiao-Hua Chi, Ching-Ming Lai, Wei-Hsuan Lin
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Patent number: 12015345Abstract: In an example, a method includes storing a pending PWM pulse for a switching voltage regulator. The method also includes determining a switching voltage regulator is operating in a current limit mode, where an inductor current is above a current limit threshold. The method includes providing a predetermined number of PWM pulses in the current limit mode. The method also includes, responsive to providing the predetermined number of PWM pulses, ceasing storage of pending PWM pulses for the switching voltage regulator.Type: GrantFiled: August 3, 2023Date of Patent: June 18, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Naman Bafna, Preetam Charan Anand Tadeparthy, Ammineni Balaji, Sreelakshmi Suresh, Mayank Jain
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Patent number: 12015348Abstract: A control circuit for adaptive noise margin control for a constant on time (COT) converter comprises an input reference terminal, amplifier, first switch device, voltage divider, trigger circuit, and output reference terminal. The amplifier has an input terminal coupled to the input reference terminal receiving a reference voltage signal. The first switch device has a control terminal coupled to an output of the amplifier, a first conduction terminal for receiving a voltage source signal, and a second conduction terminal. The voltage divider is coupled to the second conduction terminal and another input terminal of the amplifier. The trigger circuit, coupled to the voltage divider, is for triggering voltage change of a modified reference voltage signal selectively according to a high-side control signal of the COT converter. The output reference terminal coupled to the second conduction terminal outputs the modified reference voltage signal.Type: GrantFiled: August 22, 2022Date of Patent: June 18, 2024Assignee: ELITE SEMICONDUCTOR MICROELECTRONICS TECHNOLOGY INC.Inventor: Yao-Ren Chang
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Patent number: 12009808Abstract: Upon an input of an input signal that instructs to turn on a power semiconductor element, a pulse generation circuit generates a pulse. Upon reception of the pulse, a gated latch circuit holds an overcurrent detection state of an overcurrent detection circuit. In response to the input of the input signal and an overcurrent situation having been detected, an overcurrent mode switching circuit outputs an inverted or non-inverted oscillation signal, which is obtained by inverting or not inverting an oscillation signal generated by an oscillation signal generation circuit depending on the overcurrent situation being detected before or after the input of the input signal, and also outputs an inverted oscillation signal obtained by inverting the oscillation signal. A timing determination circuit periodically turns on the power semiconductor element based on the inverted oscillation signal and frequency divided signals obtained by frequency dividing the inverted or non-inverted oscillation signal.Type: GrantFiled: March 25, 2022Date of Patent: June 11, 2024Assignee: FUJI ELECTRIC CO., LTD.Inventor: Daisuke Isobe
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Patent number: 12003178Abstract: A method for a switched mode power supply (SMPS) includes providing an error voltage signal based on a difference between a sampled output voltage of the SMPS and a target voltage, and generating a clock signal characterized by an oscillating frequency; generating a switching control signal based on the error voltage signal and the clock signal using pulse-width modulation (PWM). The method further includes varying the oscillating frequency of the clock signal according to the error voltage signal in a current generating circuit, and applying the switching control signal to control the power switches of the SMPS.Type: GrantFiled: November 12, 2021Date of Patent: June 4, 2024Assignee: DIODES INCORPORATEDInventors: Wenliang Chen, Jiansong Chen
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Patent number: 12003177Abstract: A switching regulator circuit has a high side (HS) transistor actuated during on time (TON) of a duty cycle. The output current of the switching regulator circuit is determined from sensing a transistor current flowing through the HS transistor during HS transistor on time (TON) and dividing the sensed transistor current by the duty cycle to generate an output signal indicative of the output current of the switching regulator circuit. The duty cycle is determined from a ratio of the on time (TON) and off time (TOFF) of the switching regulator circuit.Type: GrantFiled: May 19, 2022Date of Patent: June 4, 2024Assignee: STMicroelectronics S.r.l.Inventors: Marco La Pila, Giuseppe Platania
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Patent number: 11996786Abstract: A resonance control method for differentiated phase correction under asymmetric positive and negative bilateral frequency domains includes a differentiated phase correction resonance control link with an independent phase correction angle at each resonance point, a decoupling link and a delay compensation link. As a high power converter has the characteristic of asymmetric positive and negative bilateral frequency domains under resonance control with decoupling, stability margin of a control link is enhanced while a negative-sequence current suppression capability is realized by means of differentiated phase correction at positive and negative resonance poles.Type: GrantFiled: January 18, 2021Date of Patent: May 28, 2024Assignee: ZHEJIANG UNIVERSITYInventors: Wuhua Li, Ye Yan, Yuxiang Wang, Chushan Li, Wenxi Yao, Xiangning He, Youtong Fang
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Patent number: 11978397Abstract: A display device includes a display panel including a plurality of pixels which display an image, a panel driver which generates a driving voltage based on a plurality of feedback voltages sensed from the display panel to drive the display panel, and a plurality of sensing lines which are connected to the pixels to sense the feedback voltages, respectively, and apply the sensed feedback voltages to the panel driver. The panel driver generates an average feedback voltage corresponding to an average of the feedback voltages and generates the driving voltage based on the average feedback voltage.Type: GrantFiled: May 24, 2022Date of Patent: May 7, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jungdeok Seo, Yunseong Kim, Sumin Lee
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Patent number: 11973423Abstract: A system includes a load and a switching converter coupled to the load. The switching converter includes at least one switching module and an output inductor coupled to a switch node of each switching module. The switching converter also includes a controller coupled to each switching module, where the controller is configured to adjust a pulse clock rate and a switch on-time for each switching module. The controller comprises a pulse truncation circuit configured to detect a voltage overshoot condition and to truncate an active switch on-time pulse in response to the detected voltage overshoot condition.Type: GrantFiled: April 23, 2021Date of Patent: April 30, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Kuang-Yao Cheng, Muthusubramanian Venkateswaran, Dattatreya Baragur Suryanarayana, Preetam Charan Anand Tadeparthy
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Patent number: 11962294Abstract: A method for driving an output node includes driving a control node of an output device coupled to the output node according to an input signal and using a fixed regulated voltage and a variable regulated voltage. The method includes generating the fixed regulated voltage based on a first power supply voltage, a second power supply voltage, and a first reference voltage. The method includes generating the variable regulated voltage based on the first power supply voltage, the second power supply voltage, and a second reference voltage. The method includes generating the second reference voltage based on the first power supply voltage, the second power supply voltage, a reference current, and a predetermined target voltage level of the control node of the output device. In an embodiment of the method, generating the second reference voltage includes periodically calibrating the second reference voltage.Type: GrantFiled: November 14, 2022Date of Patent: April 16, 2024Assignee: Skyworks Solutions, Inc.Inventors: Peter Onody, Tamas Marozsak
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Patent number: 11942949Abstract: A signal correction circuit and a server are provided. The circuit comprises: a first signal processing component receiving an input signal and positive power supply voltages and negative power supply voltages, generating a first control voltage, and outputting a first voltage, the first voltage being zero within a first time period; a second signal processing component generating a second control voltage according to the first control voltage, performing energy storage charging according to the second control voltage, controlling an energy storage charging voltage according to the second control voltage, and outputting a second voltage, and the second voltage being zero in the second time period; and an output component performing superposition processing on the first voltage and the second voltage to obtain an output signal.Type: GrantFiled: September 29, 2021Date of Patent: March 26, 2024Assignee: INSPUR SUZHOU INTELLIGENT TECHNOLOGY CO., LTD.Inventor: Xu Wang
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Patent number: 11926214Abstract: The invention relates to a system comprising several touch-sensitive control elements that are arranged next to each other. It is provided that the control elements are able to communicate with each other via a voltage-controlled peer-to-peer line and determine when a particular control element should actively respond to touches or is deactivated.Type: GrantFiled: November 29, 2019Date of Patent: March 12, 2024Assignee: VOLKSWAGEN AKTIENGESELLSCHAFTInventor: Wojciech Huwer
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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: 11916483Abstract: Provided is a DC/DC converter capable of providing overvoltage protection reliably without being affected by, for example, an external element connected to an output terminal. The DC/DC converter includes a comparator, an RS-FF circuit, a drive circuit, and an ON-timer circuit, and the ON-timer circuit includes: a current source circuit which provides an electric current based on a power supply voltage; a ripple generation circuit which generates a ripple voltage; an averaging circuit which averages the ripple voltage; a timer circuit which generates an ON-timer signal; and an overvoltage protection circuit (clamp circuit).Type: GrantFiled: March 8, 2022Date of Patent: February 27, 2024Assignee: ABLIC INC.Inventor: Yoshiomi Shiina
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Patent number: 11906997Abstract: A middle-range (mid) low dropout (LDO) voltage has both sinking and sourcing current capability. The mid LDO can provide a voltage reference in active mode and power mode for core only design to work in a Safe Operating Area (SOA). The output of mid LDO can track TO power and/or core power dynamically. The mid LDO can comprise a voltage reference generator and a power-down controller connected to an amplifier, which output is connected to a decoupling capacitor. The provision of a high ground signal allows the mid LDO provide the sinking and sourcing currents.Type: GrantFiled: November 30, 2021Date of Patent: February 20, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Szu-Chun Tsao, Yi-Wen Chen, Jaw-Juinn Horng
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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