Switched (e.g., Switching Regulators) Patents (Class 323/282)
  • Patent number: 11329565
    Abstract: The present invention provides regulation for an output voltage of a DC-DC voltage converter. The controlled variable provided to the regulator of the DC-DC voltage converter is in this case made up of a controlled variable from a voltage regulator and a further controlled variable from an initial controller. The controlled variable from the voltage regulator is in this case obtained directly from the comparison of the output voltage with a setpoint voltage. The controlled variable from the initial controller takes into consideration, inter alia, the input voltage of the DC-DC voltage converter, the value of the input DC voltage being able to be corrected such that the voltage regulator can be operated close to the zero point during steady-state operation. In this manner, faster and more precise regulation of the output voltage is obtained.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: May 10, 2022
    Assignee: Robert Bosch GmbH
    Inventor: Gholamabas Esteghlal
  • Patent number: 11329546
    Abstract: A power converter apparatus is provided to include a switching circuit, and a filter circuit. The switching circuit generates an AC voltage by switching a DC voltage at a predetermining switching frequency, and the filter circuit converts the AC voltage from the switching circuit into the DC voltage by low-pass filtering the AC voltage. The filter circuit induces first and second bypass capacitors, and an inductor. The first bypass capacitor bypasses noise of a first frequency component of the AC voltage from the switching circuit, and the second bypass capacitor bypasses noise of a second frequency component of the AC voltage from the switching circuit, which is lower than the first frequency component. The inductor is inserted between the first and second bypass capacitors, and the inductance thereof is set so that a resonance frequency of the filter circuit is lower than the switching frequency by insertion of the inductor.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: May 10, 2022
    Assignee: OMRON CORPORATION
    Inventors: Noriyuki Nosaka, Takeo Nishikawa, Wataru Okada, Satoshi Iwai, Takanori Ishii, Gun Eto
  • Patent number: 11329542
    Abstract: A switching regulator includes a switching element, a rectifier element, an output capacitor having one electrode connected to an output terminal, a control circuit which supplies a pulse width modulation signal in accordance with a voltage of the output terminal to a control terminal of the switching element, a load determination circuit which outputs a determination signal in accordance with a load, based on a voltage of the control terminal of the switching element, and a variable inductance circuit including a plurality of coils and having an inductance value which is switchable based on the determination signal.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: May 10, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Kazuma Hirao
  • Patent number: 11329599
    Abstract: A method and system include a plurality of solar cells and a plurality of voltage controllers. Each of the plurality of solar cells is directly coupled to a dedicated one of the plurality of voltage controllers to form unique pairs of solar cells and voltage controllers. Each of a plurality of panels contain a plurality of unique pairs.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: May 10, 2022
    Assignee: Tigo Energy, Inc.
    Inventor: Dan Kikinis
  • Patent number: 11323030
    Abstract: A control method for a DC/DC converter and a DC/DC converter are provided. The method includes: detecting an input voltage and an output voltage, and calculating a voltage gain according to a ratio of the output voltage to the input voltage; determining an operating mode of the DC/DC converter according to a first threshold and the voltage gain, and setting a first duty ratio and a second duty ratio according to the mode; detecting an inductor current to generate a current feedback signal, and then setting a regulation component according to the current feedback signal; regulating the first or second duty ratio according to the regulation component and generating driving signals to control the two groups of switches. The converter could operate in the Buck mode, Boost mode and Buck-Boost mode, and the voltage gain could be linearly continuous around 1.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: May 3, 2022
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Guoqiao Shen, Jian Li, Guojin Xu, Jinfa Zhang
  • Patent number: 11323029
    Abstract: A DC-DC converter including converter circuitry, a voltage detector providing a low voltage signal, and pulse-pairing circuitry. The converter circuitry may be configured according to a buck or a boost configuration switching between a zero and peak current levels. The pulse-pairing circuitry includes a paired pulse generator, a load detector, and a maximum on timing controller. In response to the low voltage signal, the paired pulse generator activates an on signal for a pair of equal duration on pulses separated by a predetermined pulse separation interval. The on time periods are based on an adjustable time value and a peak current indication. The load detector provides a load adjust signal for adjusting the time value based on sampling the low voltage signal and an off time signal at the start of the second pulse. The maximum on timing controller adjusts the adjustable time value based on the load adjust signal.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: May 3, 2022
    Assignee: Silicon Laboratories Inc.
    Inventors: Mohamed Elkholy, Anil Shirwaikar
  • Patent number: 11323022
    Abstract: A system for controlling an inductor current of a boost converter includes a start-up controller that is configured to generate a control signal that has a fixed on-time duration and a dynamic off-time duration that decreases with each cycle of the control signal, and a pulse width modulation (PWM) circuit that is configured to generate a PWM signal. During a start-up of the boost converter, the PWM signal transitions from a deactivated state to an activated state when the control signal is activated, and from an activated state to a deactivated state when the inductor current is equal to a reference current. The reference current corresponds to a peak value of the inductor current during the start-up. Thus, during the start-up, the duty cycle of the PWM signal increases with each cycle of the PWM signal. The PWM signal is provided to the boost converter for controlling the inductor current.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: May 3, 2022
    Assignee: NXP B.V.
    Inventors: Arvind Sherigar, Samiran Dam, Ashutosh Ravindra Joharapurkar
  • Patent number: 11320892
    Abstract: Digital low-dropout micro voltage regulator configured to accept an external voltage and produce a regulated voltage. All active devices of the voltage regulator are digital devices. All signals of the voltage regulator, except the first voltage and the regulated voltage, may be characterized as digital signals. Some active devices of the voltage regulator may be physically separated from other active devices of the voltage regulator by active devices of non-voltage regulator circuitry.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: May 3, 2022
    Assignee: NVIDIA CORPORATION
    Inventors: Siddharth Saxena, Tezaswi Raja, Fei Li, Wen Yueh
  • Patent number: 11316428
    Abstract: A time signal generating circuit of a power converter and a control method thereof are provided. The time signal generating circuit includes a reference frequency generating circuit, an on-time circuit and a frequency tracking circuit. The reference frequency generating circuit provides a reference frequency signal. The on-time circuit provides an on-time signal according to a first reference signal and a second reference signal. The second reference signal is related to an output voltage of the power converter. The frequency tracking circuit is coupled to the reference frequency generating circuit and the on-time circuit, and compares frequencies of the reference frequency signal and the on-time signal within a default time to generate a tracking signal. The on-time circuit adjusts the second reference signal according to the tracking signal, so that the on-time circuit adjusts the frequency of the on-time signal.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: April 26, 2022
    Assignee: uPI Semiconductor Corp.
    Inventors: Chih-Lien Chang, Chun-Chieh Wang
  • Patent number: 11316420
    Abstract: A circuit includes first and second transistors, an adaptive bias current source circuit, and an adaptive resistance circuit. The first transistor has a control terminal and first and second current terminals. The control terminal of the first transistor being a first input to the circuit. The second transistor has a control terminal and first and second current terminals, and the control terminal of the second transistor is a second input to the circuit. The first and second inputs are differential inputs to the circuit. The adaptive bias current source circuit is coupled to the second current terminal of the first transistor. The adaptive resistance circuit is coupled between the second current terminal of the second transistor and the adaptive bias current source circuit.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: April 26, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Rohit Phogat, Ramakrishna Ankamreddi, Isha Agrawal
  • Patent number: 11316509
    Abstract: Systems and methods are described for controlling inrush current for a system comprising a plurality of metal-oxide-semiconductor field-effect transistors (MOSFETs). The system may include a control circuit coupled to parallel series of gate drivers, where each gate driver is coupled to a different MOSFET. An inrush current may be received during charging of a capacitor of the switch circuit. During a first period of a ramp time, the control circuit may cause the inrush current to pass through a first gate driver. During a second period of the ramp time, the control circuit may cause the inrush current to pass through a second gate driver. By using a control circuit to cause the inrush current to pass through each MOSFET, a gate-source threshold voltage for the MOSFETs may remain below safe operating areas (SOAs) for the different MOSFETs.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: April 26, 2022
    Assignee: ZT Group Int'l, Inc.
    Inventor: Yung-Tsung Hsieh
  • Patent number: 11309806
    Abstract: To disclose several zero-voltage-switching (ZVS) power inversion circuits, a modified pulse-width modulation control scheme is employed. It includes two driver-signal pairs. Each pair has a near 50% duty ratio driver signal and a pulse-width modulation driver signal. Because the combination timing waveform of the two driver signals of each pair resembles to a letter T, the control scheme is thus briefly named as double T (TT) control. In addition to achieving zero-voltage switching performance for high frequency operation, the disclosed power inversion circuits can alleviate the potential shoot-through problem existed in phase-shift control full-bridge power inversion circuits. Consequently, reliability performance can be improved.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: April 19, 2022
    Inventor: Ching-Shan Leu
  • Patent number: 11303204
    Abstract: A trans-inductor voltage regulator (TLVR) circuit has multiple phases and a switching circuit for each phase. Each switching circuit has a winding of a transformer as an output inductor. The other windings of the transformers are connected in series with a nonlinear compensation inductor. An on-time period of each switching circuit is reduced when a load transient condition occurs or when a load current starts to be stable after the load transient condition.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: April 12, 2022
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Tao Zhao, Hang Shao, Dianbo Fu, Daocheng Huang
  • Patent number: 11303207
    Abstract: A method of controlling a power converter includes: generating a modulation signal for controlling a phase current of a power stage of the power converter such that an output voltage of the power converter follows a load line having a slope that determines a rate of change of the output voltage as a function of load current; receiving a signal which indicates a target voltage regulation setpoint; and overriding the load line when the signal is active, such that the output voltage follows the target voltage regulation setpoint instead of the load line when the signal is present at the interface.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: April 12, 2022
    Assignee: Infineon Technologies Austria AG
    Inventors: Jayadevan Radhakrishnan, Danny Clavette
  • Patent number: 11303210
    Abstract: Aspects of the present disclosure provide for a circuit. In at least some examples, the circuit includes a first switch coupled between a first node and a second node and a second switch coupled between a third node and the second node. The circuit further includes a resistor coupled between the second node and a fourth node and a capacitor comprising a first terminal coupled to the fourth node and a second terminal. The circuit further includes a transistor comprising a drain terminal coupled to the third node, a source terminal coupled to a fifth node, and a gate terminal and an amplifier comprising a first input terminal coupled to the fifth node, a second input terminal coupled to the fourth node, and an output terminal coupled to a sixth node.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: April 12, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ivan Shumkov, Christian Harder, Erich-Johann Bayer, Joerg Kirchner, Gaetano Petrina
  • Patent number: 11300986
    Abstract: A system comprises a first current balancer and a second current balancer. Each of the first and second current balancers includes a first input line for a first voltage source connected to a first output, a second input line for a second voltage source connected to a second output and is in parallel with the first input line, a first series pass element connected in series with the first input line, and a second series pass element connected in series with the second input line. The system further includes a controller operatively connected to the first series pass element and to the second series pass element to throttle at least one of the first series pass element and the second series pass element to balance output current in the first and second outputs.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: April 12, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Michael A. Wilson, Steven A. Avritch, Gary L. Hess
  • Patent number: 11293808
    Abstract: A method includes, responsive to an application of power to an IC, self-initializing the IC by asserting a reset signal for a reset period. Self-initializing the IC also includes, in response to an expiration of the reset period, deasserting the reset signal. Self-initializing the IC also includes, responsive to deasserting the reset signal, automatically obtaining first temperature data from at least one thermal sensing device associated with a die of the IC, and storing the first temperature data in a storage component of the IC.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: April 5, 2022
    Assignee: Delphi Technologies IP Limited
    Inventors: Soumyajit Routh, Kevin M. Gertiser, Jack L. Glenn, John Mark Dikeman, Daniel C. Penrod
  • Patent number: 11291093
    Abstract: A load control device for regulating an average magnitude of a load current conducted through an electrical load may operate in different modes. The load control device may comprise a control circuit configured to activate an inverter circuit during an active state period and deactivate the inverter circuit during an inactive state period. In one mode, the control circuit may adjust the average magnitude of the load current by adjusting the inactive state period while keeping the active state period constant. In another mode, the control circuit may adjust the average magnitude of the load current by adjusting the active state period while keeping the inactive state period constant. In yet another mode, the control circuit may keep a duty cycle of the inverter circuit constant and regulate the average magnitude of the load current by adjusting a target load current conducted through the electrical load.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: March 29, 2022
    Assignee: Lutron Technology Company LLC
    Inventor: Steven J. Kober
  • Patent number: 11271476
    Abstract: A charge pump circuit by which fundamental issues involved in the voltage feedback type charge pump circuit have been solved is realized. A power supply circuit includes a charge pump circuit, a feedback circuit feeding an output of the charge pump circuit back to an input of the charge pump circuit, a first current source causing a constant current to flow through the feedback circuit, a MOS transistor element interposed in a middle of the feedback circuit, a resistor element interposed at a position closer to the output of the charge pump circuit than the MOS transistor element in the feedback circuit, a bias circuit applying a constant voltage to a control terminal of the MOS transistor element, and a control section controlling a value of the constant current which the first current source flows through the feedback circuit.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: March 8, 2022
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Masahiro Ichihashi, Kenya Kondou, Kazumasa Nishimura, Syou Mitsuishi, Toshio Suzuki, Nobuhiko Shigyo, Masayuki Katakura, Motoyasu Yano
  • Patent number: 11271479
    Abstract: In some examples, a switch-mode power supply circuit comprises a pulse generation circuit comprising an oscillator, the oscillator configured to generate first pulses using a fixed frequency regulation for a first load condition that exceeds a predefined threshold and configured to generate second pulses using a variable frequency regulation for a second load condition that does not exceed the predefined threshold. The circuit also includes a power converter coupled to the pulse generation circuit and configured to convert a first voltage to a regulated voltage using either one of the first or second pulses generated by the pulse generation circuit. The circuit further comprises an output filter coupled to the power converter and configured to produce a second voltage from the regulated voltage.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: March 8, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Tawen Mei
  • Patent number: 11271468
    Abstract: Disclosed herein are synchronous rectifier control techniques for Discontinuous Current Mode (DCM) converters. These techniques may be particularly advantageous where the current shape is triangular in nature with a fixed down-slope. Such converters may include DCM flyback converters and DCM buck converters. The proposed control techniques can reduce body diode conduction of the synchronous rectifier and optimize turn-off timing, while negating the effect of parasitic circuit elements. These techniques may also help simplify the control of synchronous rectifiers operated in parallel mode. Finally, such techniques may also help achieve higher performance in variable output voltage converters and converters that operate at high switching frequencies.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: March 8, 2022
    Assignee: Apple Inc.
    Inventor: Vijay Phadke
  • Patent number: 11264097
    Abstract: A voltage generation circuit includes a driver configured to generate an internal voltage by driving an external voltage depending on a driving signal; an amplifier configured to generate the driving signal depending on a result of comparing a reference voltage and a feedback voltage; and a switch configured to delay a decrease of the internal voltage by precharging a node of the amplifier with a predetermined voltage depending on a control signal.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: March 1, 2022
    Assignee: SK hynix Inc.
    Inventor: Chan Hui Jeong
  • Patent number: 11262778
    Abstract: A reference voltage generator includes an input terminal configured to receive an enable signal and an output terminal configured to provide an output signal. A voltage generator circuit is arranged to generate a first output voltage signal, and a pre-settling circuit is arranged to generate a second output voltage. The pre-settling circuit is configured to provide the second output voltage signal at the output terminal in response to the enable signal received at the input terminal, and following a first time period provide the first output voltage at the output terminal.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: March 1, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yen-An Chang, Yi-Chun Shih, Chieh-Pu Lo
  • Patent number: 11262775
    Abstract: An electrical circuit for ensuring safe ramp-up and ramp-down of at least a regulated operating voltage, a reference voltage, and a reset signal for a consumer is described. The electrical circuit includes a voltage reference circuit and a voltage regulator. The voltage regulator is provided in order to furnish a regulated operating voltage, the voltage reference circuit is provided in order to be supplied with the regulated operating voltage furnished by the voltage regulator, and the voltage regulator is provided in order to obtain a reference voltage from the voltage reference circuit.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: March 1, 2022
    Assignee: Robert Bosch GmbH
    Inventor: Carsten Hermann
  • Patent number: 11255881
    Abstract: An inductor current detecting circuit is provided. A differentiator circuit differentiates a high-side voltage signal to generate a first differential signal, and differentiates a low-side voltage signal to generate a second differential signal. A first current source outputs a first charging current according to the first differential signal. A second current source outputs a second charging current according to the second differential signal. First and second terminals of a first switch are respectively connected to the first current source and a first terminal of a second switch. A second terminal of the second switch is connected to the second current source. Two terminals of a capacitor are connected to the second terminal of the first switch and the second current source respectively. The first switch and the second switch are alternately turned on to obtain a continuous waveform.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: February 22, 2022
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventor: Chih-Yuan Chen
  • Patent number: 11258347
    Abstract: A method of reducing THD can include: acquiring a first average inductor current during a first conduction time of a main power transistor of a power converter in a switching cycle; acquiring a second average inductor current during a second conduction time and an off time of the main power transistor in the switching cycle; and adjusting the second conduction time of the main power transistor in accordance with a difference between the first and second average inductor currents, where the first and second conduction times are successive.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: February 22, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Longqi Wang, Jianxin Wang
  • Patent number: 11255732
    Abstract: Provided are a temperature sensor, an array substrate, and a display device. In the temperature sensor, a low-pass filter is disposed between a ring oscillator and a comparator, so that a square-wave signal output from the ring oscillator passes through the low-pass filter and a high-frequency component in the square-wave signal output from the ring oscillator is directly filtered out by the low-pass filter, thereby improving a signal-to-noise ratio of the ring oscillator and a test accuracy of the temperature sensor.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: February 22, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xueyou Cao, Haisheng Wang, Chunwei Wu, Xiaoliang Ding, Yanling Han, ChihJen Cheng, Wei Liu, Ping Zhang, Tianhang Luan, Hao Li, Shaoning Guo, Bingqian Zhu
  • Patent number: 11258444
    Abstract: According to one aspect, embodiments herein provide a power switching circuit, comprising a first terminal, a second terminal, a third terminal, and a plurality of switching devices, each switching device having a first transistor having a first gate, a first source, and a first drain, a second transistor having a second gate, a second source, a second drain coupled to the first source, and a bipolar body diode coupled between the second drain and the second source, and a unipolar diode configured to prevent a transition voltage applied across the first gate and the first source from exceeding a degradation threshold of the first transistor during a transition period, wherein a first switching device of the plurality of switching devices is coupled between the first and third terminals and the and a second switching device of the plurality of switching devices is coupled between the second and third terminals.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: February 22, 2022
    Assignee: SCHNEIDER ELECTRIC IT CORPORATION
    Inventors: Indra Prakash, Damir Klikic
  • Patent number: 11258365
    Abstract: A power converter is provided. A driver circuit is connected between a controller circuit and a switch circuit. The switch circuit is connected to an inductor. The inductor is connected in series with a first capacitor and grounded through the first capacitor. A first comparison input terminal of a first comparator is connected to an output terminal between the inductor and the first capacitor. A second comparison input terminal of the first comparator is grounded through a second capacitor. The controller circuit outputs a control signal for controlling the driver circuit to drive the switch circuit according to a comparison signal outputted by the first comparator. A reference current source provides a reference current to the second capacitor. A first terminal of a first resistor is connected to the second capacitor. A second terminal of the first resistor is coupled to a reference potential.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: February 22, 2022
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Jen-Chien Hsieh, Tsung-Yu Wu
  • Patent number: 11256276
    Abstract: A power control integrated circuit (IC) chip can include a direct current (DC)-DC converter that outputs a switching voltage in response to a switching output enable signal. The power control IC chip can also include an inductor detect circuit that detects whether an inductor is conductively coupled to the DC-DC converter and a powered circuit component in response to an inductor detect signal. The power control IC chip can further include control logic that (i) controls the inductor detect signal based on an enable DC-DC signal and (ii) controls the switching output enable signal provided to the DC-DC converter and a linear output disable signal provided to a linear regulator based on a signal from the inductor detect circuit indicating whether the inductor is conductively coupled to the DC-DC converter and the powered circuit component.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: February 22, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sachin Sudhir Turkewadikar, Nitin Agarwal, Madhan Radhakrishnan
  • Patent number: 11249501
    Abstract: A device includes a first transistor connected between a first node and an output terminal and a first current source connected between the first node and a supply rail. A circuit includes a second current source connected between the supply rail and a second node, an operational amplifier having a non-inverting input configured to receive a potential set point, and a second transistor connected between the second node and an inverting input of the operational amplifier. An output of the operational amplifier is connected to a control terminal of the second transistor and further connected to a control terminal of the first transistor.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: February 15, 2022
    Assignee: STMicroelectronics (Rousset) SAS
    Inventor: Jimmy Fort
  • Patent number: 11251700
    Abstract: A voltage regulation circuit can include: a power stage circuit with a single inductor and a plurality of output circuits; each output circuit having an output control switch configured to control a duration of an on time of the output circuit, and an output switch control circuit configured to control the output control switch in accordance with an output voltage sampling signal, a reference current signal that represents an output current of the output circuit, and a clock signal, in order to maintain an output voltage of the output circuit as constant and to decrease interference from load variations of any other of the plurality of output circuits; and where the output control switches are controlled to be on in sequence in each switching period.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: February 15, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Kailang Hang, Liangwei Sun
  • Patent number: 11245395
    Abstract: A circuit arrangement includes two switching group series circuits of switch assemblies, switch-mode power supply units, and two capacitor bridges connecting the switching group series circuits. Each switch assembly has a parallel circuit of a semiconductor switch and a freewheeling diode as well as a driver for actuating the semiconductor switch. Each switch-mode power supply unit is associated with a switch pair of semiconductor switches and supplies the drivers of both semiconductor switches of the switch pair with energy. Each switch pair is formed by a semiconductor switch of a first switching group series circuit and a semiconductor switch of a second switching group series circuit. A power convertor module having the circuit arrangement is also provided.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: February 8, 2022
    Assignee: Siemens Energy Global GmbH & CO. KG
    Inventors: David Doering, Gerald Franz Giering, Klaus Wuerflinger
  • Patent number: 11239753
    Abstract: A switching converter, control method control circuit thereof are disclosed. The switching converter converts a DC input voltage into a DC output voltage. The control circuit comprising: a compensation module, generating a ramp signal; a comparator, compares a first superimposed signal related to the DC output voltage with a second superimposed signal related to an error signal between the DC output voltage and the ramp signal; a first RS flip-flop generates a pulse width modulation signal in accordance with a set signal and a reset signal, obtains a constant on time in accordance with the reset signal, and obtains an off time related to the DC output voltage; and a driving module which converts the pulse width modulation signal into a switching control signal, wherein the compensation module adaptively adjusts the slope of the ramp signal. The control circuit adopts an adaptive ramp signal to perform compensation.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: February 1, 2022
    Assignee: HANGZHOU SILAN MICROELECTRONICS CO., LTD.
    Inventors: Yongqiang Yu, Jun Wang, Huajie Chen, Zhihua Ning
  • Patent number: 11239741
    Abstract: A semiconductor switch control circuit includes: a pulse signal generating part configured to generate a pulse signal which becomes a time reference for performing an ON/OFF control of a semiconductor switch; a drive current generating part configured to generate a drive current based on the pulse signal which the pulse signal generating part generates and to supply the drive current to a gate electrode of the semiconductor switch; a current detecting part configured to detect a drain current or a source current of the semiconductor switch; and a drive current control part configured to have a function of controlling a drive current which the drive current generating part generates based on the pulse signal which the pulse signal generating part generates and the current which the current detecting part detects.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: February 1, 2022
    Assignee: SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
    Inventors: Wataru Miyazawa, Shigeru Hisada
  • Patent number: 11239742
    Abstract: A load control device for controlling power delivered from an alternating-current power source to an electrical load may comprise a controllably conductive device, a control circuit, and an overcurrent protection circuit that is configured to be disabled when the controllably conductive device is non-conductive. The control circuit may be configured to control the controllably conductive device to be non-conductive at the beginning of each half-cycle of the AC power source and to render the controllably conductive device conductive at a firing time during each half-cycle (e.g., using a forward phase-control dimming technique). The overcurrent protection circuit may be configured to render the controllably conductive device non-conductive in the event of an overcurrent condition in the controllably conductive device.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: February 1, 2022
    Assignee: Lutron Technology Company LLC
    Inventors: Dinesh Sundara Moorthy, James P. Steiner
  • Patent number: 11233453
    Abstract: The power conversion device includes a multilevel boosting circuit and a smoothing capacitor for smoothing output voltage of the multilevel boosting circuit. The multilevel boosting circuit includes: a leg portion in which four semiconductor elements, i.e., a first diode, a second diode, a first switching element, and a second switching element are connected in series; and an intermediate capacitor connected between a connection point of the first diode and the second diode, and a connection point of the first switching element and the second switching element. When voltage of the smoothing capacitor becomes a reference voltage value or more, the control unit executes a protection mode to fix the first switching element and the second switching element in OFF states.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: January 25, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shuta Ishikawa, Akihiko Iwata, Tatsuki Matsunaga, Koyo Matsuzaki
  • Patent number: 11234310
    Abstract: An LED driver comprises a current source and a power supply configured to provide a power supply output voltage to the current source. The LED driver further comprises a controller configured to measure a voltage drop over the current source and to generate a feedback signal in response to the measured voltage drop. The power supply comprises a power supply regulator configured to regulate the power supply output voltage of the power supply between a minimum power supply output voltage and a maximum power supply output voltage, the power supply regulator comprising a power supply regulator input. The feedback signal is provided to the power supply regulator input, in a range from a first feedback signal value representing a minimum power supply output voltage to a second feedback signal value representing a maximum power supply output voltage.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: January 25, 2022
    Assignee: eldoLAB Holding B.V.
    Inventors: Nicolaas Johannes Antonius Gommans, Franciscus Bernardus Marie Van Horck, Marc Saes
  • Patent number: 11228256
    Abstract: A controller includes a voltage sensing circuit configured to detect a voltage variation across a capacitor of a power converter, and a control circuit configured to calculate a current flowing through an inductor of the power converter based on the voltage variation across the capacitor of the power converter.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: January 18, 2022
    Assignee: Infineon Technologies AG
    Inventor: Nicolo Zilio
  • Patent number: 11228273
    Abstract: A controller for a motor includes a first processing circuit and a second processing circuit configured to communicate with each other. The first processing circuit is configured to execute a first operation amount calculation process, an operation process, and an output process. The first operation amount calculation process is a process of calculating a first operation amount. The output process is a process of outputting the first operation amount to the second processing circuit. The second processing circuit is configured to execute a second operation amount calculation process, a first use operation process, a second use operation process, and an elimination process.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: January 18, 2022
    Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahiro Toko, Atsuo Sakai, Ryo Irie
  • Patent number: 11223276
    Abstract: A voltage converter with a high side power switch, having: an off control circuit, having a first input terminal configured to receive an input voltage, a second input terminal configured to receive an output voltage, a third input terminal configured to receive a current representing signal indicative of a current flowing through the high side power switch, a fourth input terminal configured to receive an on-set signal in response to an on operation of the high side power switch, and an output terminal configured to provide an off control signal to indicate an end of an on time period of the high side power switch; wherein the on time period of the high side power switch is regulated by the input voltage, the output voltage and the current representing signal.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: January 11, 2022
    Assignee: Monolithic Power Systems, Inc.
    Inventor: Wen Cai
  • Patent number: 11218086
    Abstract: A power conversion system includes a hybrid power converter phase unit including three voltage inputs, a voltage output, a pair of outer switches between the voltage inputs and voltage output, and a pair of inner switches between the voltage inputs and the outer switches. The power conversion system includes a controller in electrical communication with the inner and outer switches. The controller is configured to selectively disable or enable the inner switches by switching the inner switches OFF or ON. A method includes selectively disabling or enabling inner switches in a hybrid power converter phase unit with a controller such that the hybrid power converter phase unit is a 3-level converter when the inner switches are ON and enabled in a 3-level mode and a 2-level converter when the inner switches are OFF and disabled in a 2-level mode.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: January 4, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Bo Liu, Xin Wu, Yongduk Lee
  • Patent number: 11218077
    Abstract: Current flowing through an inductor on a primary side of a voltage converter is sensed and compared to a threshold peak current value to determine when to end an ON portion of the voltage converter. The secondary side of the voltage converter supplies an indication of output voltage for use in determining the threshold peak current value. On start-up the primary side detects when the indication of output voltage is supplied by the secondary side across on isolation channel. Prior to detecting the indicating is being supplied, the primary side uses an increasing threshold peak current as the threshold peak current value. After detection that the indication of output voltage is being provided by the secondary side, the threshold peak current value is based on the indication of the output voltage.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: January 4, 2022
    Assignee: Skyworks Solutions, Inc.
    Inventors: Riad S. Wahby, Jeffrey L. Sonntag, Tufan C. Karalar, Michael J. Mills, Eric B. Smith, Ion C. Tesu, Donald E. Alfano
  • Patent number: 11218147
    Abstract: A circuit protective system. The system includes an output controlling enablement of a transistor and an input sensing an operational parameter associated with the transistor. The system also includes detection circuitry providing an event fault indicator if the operational parameter violates a condition. The system also includes protective circuitry disabling the transistor in response to the event fault indicator and subsequently selectively applying an enabling bias to the transistor; the enabling bias is selected from at least two different bias levels and in response to a number of event fault indications from the detection circuitry.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: January 4, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Md. Abidur Rahman, Adam Quirk, Stephen Nortman, Sualp Aras
  • Patent number: 11206033
    Abstract: A switch-mode power supply includes a pair of input terminals, a pair of output terminals, and at least one switch coupled between the input terminals and the output terminals. The power supply further includes an analog-to-digital converter (ADC) for converting a sensed analog current value at the output terminals to an output digital value, an interface for receiving a user configurable current setting, and a control circuit coupled with the interface, the ADC and the at least one switch. The control circuit is configured to determine a raw digital value of the ADC that corresponds to the received current setting by processing an iterative loop, and turn on and turn off the at least one switch according to the determined raw digital value and the output digital value of the ADC, to supply an output current at the pair of output terminals that corresponds to the received current setting.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: December 21, 2021
    Assignee: Astec International Limited
    Inventors: CJ Saguian Mirafuentes, Ranil Margarijo Montaril
  • Patent number: 11205959
    Abstract: A switching regulator has an error amplifier supplying an error current, a phase compensation portion generating an error voltage, a clamper clamping the error voltage, a PFM detector supplying a comparison result signal of a first level or a comparison result signal of a second level based on the error current, an oscillator supplying a clock signal in response to the comparison result signal at the second level and fixing the clock signal in response to the comparison result signal at the first level, and a PWM converter turning on/off a switching element with a desired pulse width based on the error voltage and the output from the oscillator.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: December 21, 2021
    Assignee: ABLIC INC.
    Inventor: Kosuke Takada
  • Patent number: 11201460
    Abstract: A power source switch control device includes a detection circuit, a detection circuit, a detection circuit, and a detection circuit. The detection circuit detects forward voltage of a body diode of a FET, and the detection circuit detects forward voltage of a body diode of a FET. The detection circuit detects forward voltage of a body diode of a FET, and the detection circuit detects forward voltage of a body diode of a FET. A controller determines whether a defect of a power circuit has occurred based on results of the detection by the detection circuits to. Accordingly, the power source switch control device can appropriately detect defect of a switching element of a power source.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: December 14, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Eiichiro Oishi, Mitsuaki Morimoto
  • Patent number: 11201561
    Abstract: Systems and methods for power conversion are described. Symmetric topologies and modulation schemes are described that may reduce common-mode noise. For example, a system may include a transformer including a first secondary winding and a second secondary winding; a rectifier, including a set of switches, that connects taps of the first secondary winding and the second secondary winding to a first terminal and a second terminal, wherein the rectifier is symmetric with respect to the first secondary winding and the second secondary winding; a battery connected between the first terminal and the second terminal; and a processing apparatus that is configured to control the set of switches to rectify a multilevel voltage signal on the transformer, including: selecting a modulation scheme from among two or more modulation schemes based on a measured voltage level of the battery.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: December 14, 2021
    Assignee: Apple Inc.
    Inventors: Ashish K. Sahoo, Brandon Pierquet
  • Patent number: 11199894
    Abstract: An information handling system includes a power supply and a power assist unit. The power supply powers a power rail. The power assist unit includes a power storage element, a converter including a semiconductor device coupled to provide power from the power storage element to the power rail, and a controller configured to receive a load indication that indicates a power demanded by the load and to provide an intermediate output based upon the load indication. The controller includes a boost element to receive the intermediate output and to provide a controller output. The controller output is a sum of a bias voltage level provided by the bias element and the intermediate output. The controller output is coupled to a gate terminal of the semiconductor device. The converter provides power from the power storage element to the power rail in response to the controller output.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: December 14, 2021
    Assignee: Dell Products L.P.
    Inventors: John J. Breen, Mark A. Muccini, Lei Wang
  • Patent number: 11196348
    Abstract: Controlling switching frequency of a switching power converter. At least some example embodiments are methods of operating a switching power converters, comprising: operating, by a primary-side controller, a switching power converter at a first frequency set by a resistor coupled to a first pin of the primary-side controller; and sensing a synchronization signal applied to the first terminal of the primary-side controller, the synchronization signal has a second frequency that is variable; and operating, by the primary-side controller, the switching power converter at the second frequency.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: December 7, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Jan Chromcak