Switched (e.g., Switching Regulators) Patents (Class 323/282)
  • Patent number: 10673329
    Abstract: Examples herein relate to a multiphase voltage regulator, comprising a pulse-width modulation PWM controller to output a plurality of PWM signals for driving a plurality of pluggable stand-alone voltage regulator converter stage, wherein each pluggable stand-alone voltage regulator converter stage receives one of the PWM signals and delivers a regulated output voltage signal, wherein a contribution of the regulated output voltage signals is delivered to a load connected onto a printed circuit assembly PCA.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: June 2, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Mohamed Amin Bemat, Kirk Yates
  • Patent number: 10673336
    Abstract: A DC-DC converter with droop regulation for better transient performance. The DC-DC converter includes a switching circuit, a comparison circuit and a logic control circuit. A differential voltage indicative of an output voltage of the switching circuit, and a droop voltage indicative of an output current of the switching circuit, are generated. A high-pass filtered signal is obtained by high-pass filtering the droop voltage. The comparison circuit responds to the differential voltage, a reference voltage and the high-pass filtered signal to generate a set signal. The logic control circuit generates a control signal based on the set signal to control the switching circuit.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: June 2, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Lijie Jiang, Xiaokang Wu, Binci Xu
  • Patent number: 10673454
    Abstract: A comparator circuit is applied to comparing an input voltage and a reference voltage to generate a comparison result. The comparator circuit includes a resistor circuit, a current source circuit and a transistor switching circuit. The resistor circuit receives first and second input voltages in the input voltage. The current source circuit provides a first current and a second current, and the first current, the second current and the resistor circuit generate the reference voltage. The transistor switching circuit generates the comparison result at its output end according to a first control voltage and a second control voltage at its input end. The current source circuit and the resistor circuit generate the first control voltage according to the first current and the first input voltage, and generate the second control voltage according to the second current and the second input voltage.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: June 2, 2020
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventor: Yuan-Dong Long
  • Patent number: 10673316
    Abstract: A circuit includes a power converter including an output node and a feedback port, which is configured to receive a feedback signal to control the output signal at the output node. The circuit further includes a feedback network coupled to both the output node and the feedback port of the power converter. The feedback network includes a combined voltage divider. The combined voltage divider includes a first branch and a second branch. The first branch is coupled between the output node of the power converter and a partition node coupled to the feedback port of the power converter. The second branch is coupled between the partition node and a ground voltage. The second branch of the combined voltage divider includes a modulation node between the partition node and the ground voltage.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: June 2, 2020
    Assignee: STMICROELECTRONICS S.R.L.
    Inventors: Marco Maria Branciforte, Filippo Bonaccorso
  • Patent number: 10673332
    Abstract: A switching regulator control circuit, having: a slope circuit 3 for generating a slope voltage VSLP on the basis of a clock signal CLK of a prescribed frequency; an error amplifier 1 for generating an error signal Vc corresponding to the difference between a reference voltage VREF and a voltage VFB corresponding to the output voltage of a switching regulator; a comparator 4 for comparing the error signal Vc and the slope voltage VSLP; and an RS flip-flop 6 set on the basis of the clock signal CLK and reset by a signal outputted by the comparator 4. The timing at which the RS flip-flop 6 is set is delayed with respect to the timing at which the sloping of the slope voltage VSLP is started.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: June 2, 2020
    Assignee: Rohm Co., Ltd.
    Inventors: Shingo Hashiguchi, Tetsuo Tateishi
  • Patent number: 10673331
    Abstract: A feedback block used with an isolated switching converter, having: a variable resistance circuit receiving a resistance control signal and having an equivalent resistance in proportional to a duty cycle of the resistance control signal; and a resistance control circuit, configured to provide the resistance control signal based on a load of the isolated switching converter; wherein the duty cycle of the resistance control signal varies in response to the load of the isolated switching converter.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: June 2, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Wenbin Lu, Lei Miao
  • Patent number: 10666272
    Abstract: A COT control circuit for DC-DC converter. The COT control circuit has a synchronizing signal generator, an on time generator and a frequency locking circuit. The synchronizing signal generator generates a synchronizing signal and a frequency-modulated signal. The on time generator receives an input voltage signal, an output voltage signal, an error signal and the frequency-modulated signal to generate an on time signal. The error signal is generated by the frequency locking circuit based on the on time signal and the synchronizing signal. The operation frequency of a steady state of the DC-DC converter is regulated through changing the value of the frequency-modulated signal.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: May 26, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventor: Lei Li
  • Patent number: 10665496
    Abstract: It is an object of the present invention to provide a switch element and a load driving apparatus capable of suppressing a characteristic change of an on-resistance without lowering an off-breakdown voltage. The switching element includes a control electrode, an active element region, and an inactive element region, and the active element region and the inactive element region are formed adjacent to each other on the control electrode. Alternatively, in the load driving apparatus including a current driving switch element and a current detecting switch element that is connected in parallel to the load driving switch element and that detects an energization current of the load driving switch element, the current detecting switch element includes at least a control electrode, an active element region, and an inactive element region, and the active element region and the inactive element region are formed adjacent to each other on the control electrode.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: May 26, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Shinichirou Wada, Takayuki Oshima, Katsumi Ikegaya
  • Patent number: 10665200
    Abstract: A display device includes: a driving voltage provider for generating a PWM signal according to the frequency of a clock signal, and providing a driving voltage generated according to the duty ratio of the PWM signal to at least one of the pixels, the data driver, and the scan driver. The driving voltage provider tunes the frequency of the clock signal to a first frequency in a first section, tunes the frequency of the clock signal to a second frequency smaller than the first frequency in a second section in which the magnitude of a driving voltage is larger than that in the first section, and tunes the frequency of the clock signal to a third frequency larger than the first frequency in a third section in which the magnitude of a driving voltage is smaller than that in the first section.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: May 26, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki Hyun Pyun, Eui Myeong Cho
  • Patent number: 10666138
    Abstract: A switching converter includes a power stage that receives an input voltage for converting it into an output voltage and provides a load current to a load operably coupled to the power stage. The power stage includes a switch providing a switching voltage and a controller comprising an integrator and a comparator with hysteresis and configured to regulate the output voltage to a level proportional to a reference voltage by controlling the switching voltage.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 26, 2020
    Assignee: Avatekh, Inc.
    Inventor: Alexei V. Nikitin
  • Patent number: 10666139
    Abstract: During a load transient or load current step, an error amplifier of a regulator circuit can be temporarily pushed to saturation and a compensation capacitor can be discharged. The present inventor has recognized, among other things, that the transient response performance in such a case can suffer due to the slow rising rate of the error amplifier caused by the slow charging of the compensation capacitor. Using various techniques, a switching regulator circuit can include a proportional-integral (PI) compensation network clamp circuit that can provide a fast system transient response and a low quiescent current, which can reduce power consumption.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: May 26, 2020
    Assignee: Analog Devices International Unlimited Company
    Inventor: Bin Zhang
  • Patent number: 10666148
    Abstract: A control method, which is applied to a conversion circuit including at least one bridge arm and an inductor, the bridge arm including an upper semiconductor switch and a lower semiconductor switch connected in series, and one end of the inductor being connected to a midpoint of the bridge arm, includes: judging a direction of current of the inductor when a scram event occurs in the conversion circuit; turning on the upper semiconductor switch and turning off the lower semiconductor switch when the direction of current of the inductor is judged as a first direction, wherein the first direction is a forward conduction direction of the lower semiconductor switch; and turning off the upper semiconductor switch and turning on the lower semiconductor switch when the direction of current of the inductor is judged as a second direction.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: May 26, 2020
    Assignee: Delta Electronics, Inc.
    Inventors: Guoqiao Shen, Jinfa Zhang
  • Patent number: 10665532
    Abstract: Various aspects of the disclosure are directed to circuitry coupled for controlling current flow, such as in a cascode arrangement. As may be consistent with one or more embodiments, an apparatus includes a first transistor having a gate, source, channel and drain, and a second transistor having a gate, and having a stacked source, channel and drain. A conductive clip plate electrically connects the drain of the second transistor to the source of the first transistor, and another conductor electrically connects the source of the second transistor to the gate of the first transistor. The second transistor operates with the connecting structure to provide power by controlling the first transistor in an off-state and in an on-state.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: May 26, 2020
    Assignee: NEXPERIA B.V.
    Inventors: Mark A. Gajda, Saurabh Pandey, Ricardo L. Yandoc, Yan Lai
  • Patent number: 10656664
    Abstract: The disclosure provides a voltage generator including a first voltage regulator which provides an output voltage to an output terminal according to a reference voltage; a second voltage regulator which determines whether to operate in an enable mode or a disable mode according to an enable signal and provides the output voltage to the output terminal according to the reference voltage when operating in the enable mode; an initial voltage generator which sets a feedback voltage of the second voltage regulator to be an initial voltage value close to the reference voltage when the enable signal switches the second voltage regulator from the disable mode to the enable mode, such that the feedback voltage of the second voltage regulator is able to be locked to the reference voltage fast, and a settling time and an overshoot/undershoot of the output voltage are reduced.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: May 19, 2020
    Assignee: Winbond Electronics Corp.
    Inventor: Takahiko Sato
  • Patent number: 10651721
    Abstract: A multi-phase converter has a plurality of switching circuits coupled in parallel and a control circuit. The control circuit provides a set signal to successively turn ON the switching circuits under power operation based on an output voltage, a reference signal and a nonlinear control signal. When a number of switching circuits under power operation decreases, the nonlinear control signal increases to a preset value from an initial value, and then the nonlinear control signal decreases to the initial value with a preset slew rate.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: May 12, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Xiaokang Wu, Lijie Jiang, Suhua Luo
  • Patent number: 10644591
    Abstract: Techniques for operating a power supply under light load conditions are provided. In an example, a frequency of an oscillator can be adjusted based on a feedback signal indicative of a voltage error of the power supply when the feedback signal falls below a first threshold. In certain examples, a peak inductor current command can be kept constant and a slope compensation ramp can be based on the frequency of the oscillator when the feedback signal falls below the first threshold. In some examples, various circuits of the power supply can be disabled when the feedback signal further falls below a second threshold. The feedback signal can be indicative of a load on the power supply.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: May 5, 2020
    Assignee: Linear Technology Holding LLC
    Inventor: Bin Zhang
  • Patent number: 10644660
    Abstract: This application relates to method and apparatus for driving acoustic transducers, such as speakers or haptic transducers. A transducer driver circuit (200) has a hysteretic comparator (201) configured to compare, with hysteresis, an input signal (SIN) received at a first comparator input to a feedback signal (SFB) received at a second comparator input. Based on the comparison the hysteretic comparator (201) generates a pulse-width modulation (PWM) signal (SPWM) at a comparator output (206). An inductor (203) is coupled between the comparator output and an output node (204). In use a resistive component (208), which may comprise the transducer (301) is coupled to output node (204). The inductor (203) and resistive component (208) provide filtering to the PWM signal (SPWM). A feedback path extends between the output node (204) and the second comparator input to provide the feedback signal (SFB).
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: May 5, 2020
    Assignee: Cirrus Logic, Inc.
    Inventor: John Paul Lesso
  • Patent number: 10644581
    Abstract: In a described example, an apparatus includes: transistor having a first terminal coupled to an input terminal, a second terminal coupled to an output terminal, and a gate terminal; a temperature sensor configured to sense a junction temperature of the transistor and generate a temperature signal based on the sensed junction temperature; and a gate driver circuit configured to generate a gate signal based on the temperature signal and to output the gate signal to the gate terminal of the transistor.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: May 5, 2020
    Assignee: Texas Instruments Incorporated
    Inventors: Mustapha El Markhi, Erhan Ozalevli, Tuli Dake
  • Patent number: 10637454
    Abstract: A pulse-width modulation (PWM) controller including an output pin, a temporary voltage generation circuit and a tri-state voltage generation circuit is disclosed. The temporary voltage generation circuit includes a voltage-dividing unit and a control unit. The voltage-dividing unit is coupled to the output pin and the control unit respectively. The control unit receives an enable signal and a PWM signal. The tri-state voltage generation circuit is coupled to the temporary voltage generation circuit and the output pin and receives the enable signal, the PWM signal and a tri-state input voltage. When the PWM controller is operated in a tri-state mode, the control unit controls the voltage-dividing unit to provide a temporary voltage to the output pin according to the enable signal and PWM signal, and then the tri-state voltage generation circuit provides a tri-state voltage to the output pin according to the enable signal and PWM signal.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: April 28, 2020
    Assignee: UPI SEMICONDUCTOR CORP.
    Inventors: Chih-Lien Chang, Min-Rui Lai
  • Patent number: 10637347
    Abstract: An abnormal power failure control system and a method thereof are provided. The system includes a first comparator, a boost-buck control circuit, a logic control circuit, a switch circuit, a current sensor circuit, a current slope comparator circuit, a second comparator, and a mode switching circuit. The first comparator compares a stored power with a first reference voltage source to output a first voltage compared signal. The boost-buck control circuit outputs a boost-buck control signal and the logic control circuit accordingly controls the switch circuit. The current slope comparator circuit determines change of a slope of a current of the switch circuit. The second comparator compares the stored power with the second reference voltage to output a second voltage compared signal. The mode switching circuit instructs the logic control circuit to control the switch circuit.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: April 28, 2020
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Chun-Kai Hsu, Kun-Yi Lin
  • Patent number: 10637357
    Abstract: A converter includes a buck boost converter circuit to generate an output voltage in response to an input voltage, and an inductor current compensation circuit to generate an output current compensated inductor current signal corresponding to a sensed input current. The output current compensated inductor current signal includes a voltage gap between a boost ramp valley and a buck ramp peak. The buck boost converter circuit includes a current sensor to receive the input voltage, the current sensor to sense an input current corresponding to the input voltage, an upper buck transistor coupled to the input voltage node, an upper boost transistor coupled to an output voltage node to output the output voltage, and an inductor coupled between the upper buck transistor and the upper boost transistor. The inductor current compensation circuit adjusts the voltage gap based on an offset compensation voltage corresponding to a switching frequency.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: April 28, 2020
    Assignee: Renesas Electronics America Inc.
    Inventors: Xiaodong Zhan, Prabhjot Singh, Long Yu
  • Patent number: 10630105
    Abstract: According to one aspect, embodiments of the invention provide a power circuit comprising an input to receive input AC power from an AC source, an auxiliary charger configured to convert the input AC power from the input into DC power, a differential amplifier configured to be powered by the DC power from the auxiliary charger, to monitor the input AC voltage level of the input AC power, and to generate a sense signal based on a status of the input AC voltage level, and a processor coupled to the auxiliary charger and the differential amplifier, the processor configured to be coupled to an LPS, to be powered into a low power mode by the DC power from the auxiliary charger, and to analyze the sense signal from the differential amplifier in the low power mode of operation. According to one embodiment, the auxiliary charger is an offline DC-DC converter.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: April 21, 2020
    Assignee: SCHNEIDER ELECTRIC IT CORPORATION
    Inventors: Ping-Chuan Tsai, Luka Petrovic, Wen-Chun Peng
  • Patent number: 10630285
    Abstract: A circuit includes an electronic component package that comprises a first lead, a second lead, and a third lead; and a III-N transistor encased in the electronic component package, the III-N transistor including a drain, a gate, and a source, where the source is coupled to the first lead, the gate is coupled to the second lead, and the drain is coupled to the third lead. The circuit includes a high voltage node and a resistor, the resistor having a first terminal coupled to the high voltage node and a second terminal coupled to the third lead. The circuit further includes a ferrite bead connected in parallel to the resistor and coupled between the third lead and the high voltage node. When switching, the deleterious effects of a parasitic inductance of the circuit's power loop are mitigated by the ferrite bead and the resistor.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: April 21, 2020
    Assignee: Transphorm Technology, Inc.
    Inventors: Jason Cuadra, Yifeng Wu, Zhan Wang
  • Patent number: 10622889
    Abstract: A voltage converting apparatus includes a plurality of output channels configured to provide a plurality of output voltages, a main energy transfer circuit configured to transfer, through an inductor, energy of an input power supply to a target output channel among the output channels, and an auxiliary energy transfer circuit connected to one of the output channels.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: April 14, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Seungchul Jung
  • Patent number: 10622892
    Abstract: The amount of power being output to the load is sensed by sampling the frequency of the pulse width modulation signal that is controlling the switch that is providing the power to the load. If the pulse width modulation signal has a high frequency, then it will be providing higher power to the load. As the power drawn by the load decreases, the frequency of the pulse width modulation power supply signal will decrease. By sensing and periodically sampling the frequency of the pulse width modulation signal that is providing power, the demand of the load can be quickly and accurately determined. As the power demand of the load decreases, the peak current that the power supply switch can provide also decreases. The permitted peak current dynamically changes to adapt to the power drawn by the load.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: April 14, 2020
    Assignee: STMicroelectronics Asia Pacific Pte Ltd
    Inventor: Kong Yin Leong
  • Patent number: 10613561
    Abstract: An integrated circuit includes a voltage monitor circuit having a first input coupled to a reference voltage and a second input, a successive approximation register (SAR) circuit having an input coupled to an output of the voltage monitor circuit, a low drop out (LDO) regulator having an input coupled to an output of the SAR circuit and an output coupled to the second input, a discharge circuit coupled to the LDO output, voltage sensing circuit having a first input coupled to the reference voltage during a trim mode and coupled to the LDO output during a monitor mode, having a second input coupled to the reference voltage, and an output which asserts a sense indicator that indicates when a voltage at the first input goes higher or lower than the reference voltage by a predetermined amount. Control circuitry is configured to, during trim mode, periodically discharge the LDO output voltage.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: April 7, 2020
    Assignee: NXP USA, Inc.
    Inventors: Jae Woong Jeong, LeRoy Winemberg
  • Patent number: 10615623
    Abstract: The capacitor quick-charge apparatus includes an input AC power source, a phase modulator, a rectifier, a shunt, a module current supply, a current control element, a capacitor, a resistance, a comparator, a variable resistor, an Operational Amplifier 1 (OP AMP 1) to an Operational Amplifier 5 (OP AMP 5), an Auto Voltage Regulator (AVR) or a Micro Control Unit (MCU), and a monitor system.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: April 7, 2020
    Assignee: DOOHYUN INFRA CO., LTD
    Inventor: Eui Suk Kang
  • Patent number: 10615697
    Abstract: A multi-level switching converter and a method which converts an input voltage provided at an input node to an output voltage provided at an output node is described. The multi-level switching converter has a first converter branch with a first set of switches and a first flying capacitor, and a second converter branch with a second set of switches and a second flying capacitor. Furthermore, the switching converter has a joint inductor for the first and second converter branch, and control circuitry. The control circuitry controls the first and second set of switches to set the output voltage in accordance to a reference voltage, and by doing so it provides a robust regulation of the capacitor voltages across the first and second flying capacitors.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: April 7, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Lorenzo Ferrari, Antonio Iannuzziello, Roberto Puddu
  • Patent number: 10613562
    Abstract: A voltage regulator includes a first switch connected between a first input terminal of an error amplifier circuit and an input terminal of the voltage regulator, a second switch connected between a second input terminal of the error amplifier circuit and an output terminal of the voltage regulator, a third switch connected between the first input terminal and the second input terminal, and a short fault detection circuit which detects a short fault of the output terminal, based on an output voltage of the voltage regulator.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: April 7, 2020
    Assignee: ABLIC INC.
    Inventors: Tadakatsu Kuroda, Tsutomu Tomioka
  • Patent number: 10608532
    Abstract: A converter circuit includes a power stage circuit configured to convert an input voltage to an output voltage provided at an output, and a control circuit configured to control the power stage circuit. The control circuit is configured to operate in one of a pulse frequency modulation (“PFM”) mode and a pulse width modulation (“PWM”) mode depending on a current supplied to the output. The control circuit includes a multi-mode timer circuit configured to provide a switching signal to set an off time for each switching cycle of the power stage circuit during the PFM mode and during the PWM mode.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: March 31, 2020
    Assignee: Texas Instrument Incorporated
    Inventors: Guofeng Jin, Yueming Sun
  • Patent number: 10607562
    Abstract: A voltage generation circuit of a display device includes an over-current detection circuit that provides a driving voltage to a voltage terminal and outputs an over-current detection signal. The over-current detection circuit includes a current detector that outputs a detection signal at a first level when a voltage corresponding to an output current flowing through the voltage terminal during a blank period, in which a blank signal is activated, is lower than a first reference level or higher than a second reference level, a glitch remover that outputs a noise detection signal when a time period in which the detection signal is maintained at the first level is longer than a reference maintenance time, and a noise filter that activates the over-current detection signal when the noise detection signal is activated at least twice during a predetermined time period.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: March 31, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jongjae Lee, Dae-sik Lee, Yanguk Nam, Yoomi Kim, Songyi Han
  • Patent number: 10601329
    Abstract: A switching regulator includes a power stage circuit, an auxiliary winding, a start-up switch, and a power switch controller circuit. The power switch controller circuit includes a multifunction pin, a start-up controller circuit, and a feedback compensation circuit. The multifunction pin is coupled to a control terminal of the start-up switch, to deliver different signals with different functions under at least two different modes, respectively. The start-up controller circuit generates a start-up signal in a start-up mode, wherein the start-up signal is delivered to a control terminal of the start-up switch through the multifunction pin. An output terminal of the feedback compensation circuit is coupled to the multifunction pin, to provide a compensation signal at the multifunction pin in an operation mode.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: March 24, 2020
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventor: Yu-Wen Chang
  • Patent number: 10601304
    Abstract: In methods, apparatus, systems, and articles of manufacture to a high efficient hybrid power converter, an example apparatus includes: a switched capacitor (SC) converter to generate a first voltage based on a voltage source; and a direct current-to-direct current (DC-DC) converter to generate a second voltage based on the voltage source of the apparatus, the difference between the first voltage and the second voltage corresponding to an output voltage.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: March 24, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Timothy McRae, Aleksandar Prodic, Sombuddha Chakraborty, Alvaro Aguilar, William James McIntyre
  • Patent number: 10594216
    Abstract: An information handling system includes a voltage regulator control circuit having a programming resistor input pin for receiving an input from a programming resistor and an ammeter input for receiving a current value. A power source provides power to a load circuit coupled to the power source via a non-remote-sensing power connection. In accordance with at least one embodiment, the voltage regulator control circuit assures a reliable input to an overvoltage protection circuit of the voltage regulator control circuit regardless of states of connections of the load circuit to the power source.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: March 17, 2020
    Assignee: Dell Products, L.P.
    Inventors: Hang Li, Shiguo Luo, Mehran Mirjafari
  • Patent number: 10587183
    Abstract: An electronic amplifier for amplifying an input signal has a branching node, a supply branch, a balance branch, an auxiliary branch and a load branch. All of the branches are connected in parallel to each other relative to the branching node and a reference potential. The supply branch supplies a DC voltage to the branching node. The balance branch absorbs and/or storing electric energy. A current supply device supplies a DC current. The control switch, the current valve and the current source are in different branches. The control switch, in a pass current state, establishes a current flow from the supply branch into either the auxiliary branch or the balance branch. In the block current state, current flows from the current supply device to the balancing device. The supply, balance and auxiliary branches provide an amplified signal to the load, controlled only by the input signal at the control switch.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: March 10, 2020
    Assignee: Technische Universitaet Muenchen
    Inventors: Bernhard Lehmeyer, Amine Mezghani, Josef Nossek
  • Patent number: 10587181
    Abstract: Each of a plurality of semiconductor elements is provided with a first control terminal and a second control terminal. A built-in gate resistor is connected between the semiconductor element and the first control terminal. Individual voltage pulse signals are input to the second control terminals when the plurality of semiconductor elements are individually turned on and off. A common voltage pulse signal is input to some of the first control terminals when a first group of semiconductor elements is turned on and off in common. A common voltage pulse signal is input to others of the first control terminals when a second group of semiconductor elements is turned on and off in common.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: March 10, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventor: Kazufumi Ishii
  • Patent number: 10587188
    Abstract: Systems and methods for quickly charging a load capacitance to a voltage level that is a multiple of the DC input voltage are provided herein. In one approach, the load capacitance is charged by a voltage multiplication circuit, and the load capacitance is subsequently discharged into a resonant circuit that drives a diode opening switch in order to create a fast rising, unipolar electrical pulse.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: March 10, 2020
    Assignee: TRANSIENT PLASMA SYSTEMS, INC.
    Inventors: Jason M. Sanders, Mark Thomas, Patrick Ford
  • Patent number: 10587197
    Abstract: A method for operating a DC-DC voltage converter, which, at an output, adjusts an output variable to a prescribed setpoint value by way of a regulator unit. Depending on an actual value of the output variable, the regulator unit sets a duty cycle of a pulse-width modulation. The regulator unit has an operating parameter for providing the pulse-width modulation. The operating parameter is variable and is changed to a new parameter value by a control apparatus which determines whether, with the unchanged setpoint value and the new parameter value, the regulator unit sets a lower duty cycle for adjusting the output variable than before the setting of the new parameter value. In that case, the new parameter value is retained. Otherwise it is changed back. The operating parameter that is varied by the new parameter value is a period of the pulse-width modulation and/or an edge steepness of switching edges.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: March 10, 2020
    Assignee: Continental Automotive GmbH
    Inventors: Christian Stoeger, Emil Kovatchev
  • Patent number: 10581241
    Abstract: A switch controls current to be supplied to an inductive load when turned on. A clamp circuit clamps a flyback voltage resulting from turning off the switch. The clamp circuit has a first clamping voltage responsive to the switch being turned off, and has a second clamping voltage, higher than the first clamping voltage, responsive to a current level through the inductive load being lower than a predetermined current level. That ensures that as the current comes down to levels required to break contact, the clamp voltage is increased to speed the collapse of the magnetic field when needed to minimize contact wear by maintaining armature momentum.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: March 3, 2020
    Assignee: Silicon Laboratories Inc.
    Inventors: Sean A. Lofthouse, Alan L. Westwick
  • Patent number: 10581329
    Abstract: A control circuit for a DC/DC converter including P-channel and N-channel transistors. The control circuit includes: a pulse generator that generates first and second pulse signals for designating turning on/off of the P-channel and N-channel transistors such that a state of the DC/DC converter or a load approaches a target value; first and second drivers that drive the P-channel and N-channel transistors based on the first and second pulse signals; first to fourth lines individually connected to an upper side power supply terminal of the first driver, a lower side power supply terminal of the second driver, a lower side power supply terminal of the first driver, and an upper side power supply terminal of the second driver; and first and second regulators that stabilize voltages of the third and fourth lines to first and second given voltage values. A coupling capacitor is connected between the third and fourth lines.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: March 3, 2020
    Assignee: ROHM CO., LTD.
    Inventor: Tadashi Akaho
  • Patent number: 10581440
    Abstract: Techniques are disclosed relating to detecting supply voltage events and performing corrective actions. In some embodiments, an apparatus includes sensor circuitry and control circuitry. In some embodiments, the sensor circuitry is configured to monitor supply voltage from a power supply and detect a load release event that includes an increase in the supply voltage that meets one or more pre-determined threshold parameters. In some embodiments, the control circuitry is configured to increase clock cycle time for operations performed by circuitry powered by the supply voltage during a time interval, wherein the time interval corresponds to ringing of the supply voltage that reduces the supply voltage and results from the load release event. In some embodiments, the disclosed techniques may reduce transients in supply voltage (which may avoid equipment damage and computing errors) and may allow for reduced voltage margins (which may reduce overall power consumption).
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: March 3, 2020
    Assignee: Apple Inc.
    Inventors: Jared L. Zerbe, Brian S. Leibowitz, Sanjay Pant
  • Patent number: 10581337
    Abstract: A diode rectifier rectifies an AC voltage output from a neutral-grounding three-phase AC power supply to a DC voltage. A smoothing capacitor smoothes the DC voltage rectified by the diode rectifier. An inverter converts the DC voltage smoothed by the smoothing capacitor into a desired AC voltage. A bidirectional switch and a Y capacitor are connected in series between one end of the smoothing capacitor and the ground. A detector detects a voltage across both ends of the smoothing capacitor. A controller drives the bidirectional switch in response to an output of the detector.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: March 3, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasushige Mukunoki, Yasushi Nakayama, Hiroyasu Iwabuki, Yuki Ishii, Keisuke Iwasawa
  • Patent number: 10574187
    Abstract: Envelope-tracking control techniques are disclosed for highly-efficient radio frequency (RF) power amplifiers. In some cases, a III-V semiconductor material (e.g., GaN or other group III material-nitride (III-N) compounds) MOSFET including a high-k gate dielectric may be used to achieve such highly-efficient RF power amplifiers. The use of a high-k gate dielectric can help to ensure low gate leakage and provide high input impedance for RF power amplifiers. Such high input impedance enables the use of envelope-tracking control techniques that include gate voltage (Vg) modulation of the III-V MOSFET used for the RF power amplifier. In such cases, being able to modulate Vg of the RF power amplifier using, for example, a voltage regulator, can result in double-digit percentage gains in power-added efficiency (PAE). In some instances, the techniques may simultaneously utilize envelope-tracking control techniques that include drain voltage (Vd) modulation of the III-V MOSFET used for the RF power amplifier.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: February 25, 2020
    Assignee: INTEL Corporation
    Inventors: Han Wui Then, Sansaptak Dasgupta, Marko Radosavljevic, Seung Hoon Sung, Sanaz K. Gardner
  • Patent number: 10566992
    Abstract: This application relates to time-encoding modulators (301,700) having a self-oscillating modulator module configured to receive an input signal and output a pulse-width modulated signal (SPWM) where the pulse-width modulated signal is synchronised to a first clock signal (CLK1). A hysteretic comparator module (302) located in a feedforward path is configured to generate the time encoded signal (SPWM) at a first node (304) based on the input signal (SIN) and a feedback signal (SFB). A feedback path is coupled to the first node to provide the feedback signal, which is either applied to an input of the hysteretic comparator module via a loop filter (701) in the feedback path or applied to the feedforward path prior to a loop filter (701) upstream of the hysteretic comparator module (302). The hysteretic comparator module (302) is configured such that any change in state of the time encoded signal at the first node is synchronised to the first clock signal (CLK1).
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: February 18, 2020
    Assignee: Cirrus Logic, Inc.
    Inventor: John Paul Lesso
  • Patent number: 10566780
    Abstract: An electronic circuit for single-event latch-up (SEL) detection and protection of a target integrated circuit (IC) is disclosed. The circuit comprises: a first detector configured for detecting an absolute load current (i) and comparing the absolute load current (i) with a threshold current (ith); a second detector configured for detecting a rate of change of load current (di/dt) and comparing the rate of change of load current (di/dt) with a threshold current change rate (di/dt)th; and a determination module for triggering a power shut-down to the target IC if the absolute load current (i) exceeds the threshold current (ith) and/or the rate of change of load current (di/dt) exceeds the threshold current change rate (di/dt)th.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: February 18, 2020
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Joseph Sylvester Chang, Wei Shu, Jize Jiang
  • Patent number: 10559528
    Abstract: This semiconductor device has a plurality of external terminals arranged in an array on a bottom surface of a package. The plurality of external terminals include a first external terminal group for receiving an input of a current from outside the device, and a second external terminal group for outputting a current to the outside of the device. The first external terminal group and the second external terminal group are laid out such that respective arrangement patterns thereof are interlocked with each other. The arrangement patterns may be comb-tooth shaped, cross-shaped, S-shaped, T-shaped, L-shaped, or may have a shape comprising a combination thereof. The plurality of external terminals may be pins, solder balls, or electrode pads.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: February 11, 2020
    Assignee: Rohm Co., Ltd.
    Inventors: Masashi Nagasato, Masafumi Okada
  • Patent number: 10554124
    Abstract: A multi-level buck converter is provided with multiple control loops to regulate the output voltage in the presence of over-current conditions and in the vicinity of a 50% duty cycle.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: February 4, 2020
    Assignee: DIALOG SEMICONDUCTOR (UK) LIMITED
    Inventors: Aravind Mangudi, William McKillop, Mark Mercer, Muhammad Nabeel Rahman, Kevin Dowdy
  • Patent number: 10546683
    Abstract: Disclosed herein is a coil component that includes a spiral conductor, a magnetic material layer covering the spiral conductor and having a through hole exposing an end of the spiral conductor, a through-hole conductor embedded in the through hole and has first region and second regions that are exposed from the magnetic material layer, a first conductor layer formed on an upper surface of the magnetic material layer and covering the first region of the through-hole conductor without covering the second region, and a second conductor layer covering the first conductor layer and the second region of the through-hole conductor, wherein the second conductor layer has a lower resistance than the first conductor layer.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: January 28, 2020
    Assignee: TDK CORPORATION
    Inventors: Tomonaga Nishikawa, Kouji Kawamura, Hidenori Tsutsui, Mitsuo Natori, Hitoshi Ozawa
  • Patent number: 10547241
    Abstract: A hybrid power converter includes a primary switching circuit, an LC circuit, and a secondary switching circuit. The primary switching circuit includes three or more switching transistors in series that may turn on or off according to a switching cycle to generate a series of voltage pulses at a connecting node between two switching transistors. The LC circuit may be coupled via the to the secondary switching circuits to the connecting node of the primary switching circuit. The LC circuit may receive, from the primary switching circuit, a series of pulses via the secondary switching circuits and may generate an inductor current in the LC circuit. The inductor current may charge a capacitor of the LC circuit to generate an output voltage of the hybrid power converter. The output voltage may have a reverse polarity with respect to an input voltage that may be coupled to the primary switching circuit.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: January 28, 2020
    Assignee: Linear Technology Holding LLC
    Inventors: Jian Li, Jindong Zhang
  • Patent number: 10534029
    Abstract: A power conversion apparatus includes a primary-side circuit, a bulk capacitor, a conversion circuit, and a master control circuit. The primary-side circuit is adapted to rectify and boost an alternating-current power and output primary-side output. The bulk capacitor is connected in parallel to two output ends of the primary-side output. The conversion circuit is configured to receive the primary-side output passing through the bulk capacitor and convert the primary-side output into secondary-side output. The master control circuit detects an electric power state of the alternating-current power, obtains a time interval, a power of the secondary-side output corresponding to the time interval, and two of the capacitor voltages corresponding to the start and the end of the time interval when the electric power state is power-off, and selectively outputs an abnormal signal according to the time interval, the power, the capacitor voltages, and a threshold.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: January 14, 2020
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventor: Hsien-Yi Tsai