With Threshold Detection Patents (Class 323/284)
  • Patent number: 11509229
    Abstract: A resonant core power supply includes a core with excitation, resonant, and load windings where the resonant winding is coupled to a tank circuit and a controller manipulates the phase, amplitude and waveform of an excitation signal applied to the excitation winding.
    Type: Grant
    Filed: August 8, 2020
    Date of Patent: November 22, 2022
    Inventor: Patrick Carden
  • Patent number: 11509223
    Abstract: In an embodiment, an SMPS comprises a half-bridge, and a driver configured to drive the half-bridge based on a PWM signal. The SMPS further comprising a first circuit coupled between the output of the driver and a control terminal of a high-side transistor of the half-bridge, wherein the first circuit is configured to maintain the first transistor on when the PWM signal has a duty cycle that is substantially 100%.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: November 22, 2022
    Assignee: STMicroelectronics (Alps) SAS
    Inventor: Patrik Arno
  • Patent number: 11502605
    Abstract: Quasi-Constant On-Time Controller. At least one example embodiment is a method of operating a power converter, comprising: charging an inductor of a switching power converter, each charging has an on-time; and then discharging the inductor while providing current to the load; and repeating the charging and the discharging at a switching frequency. During the repeating, the example method may comprise: adjusting the switching frequency proportional to a voltage difference between an output voltage and a setpoint voltage; generating an on-time reference proportional to a frequency difference between the switching frequency and a setpoint frequency, the on-time of each charging of the inductor is based on the on-time reference; and modifying the on-time proportional to the voltage difference.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: November 15, 2022
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Alessandro Zafarana
  • Patent number: 11493943
    Abstract: A voltage booster powered by a primary electrical source for providing an adjustable voltage across the load, while a current regulator in series with the load maintains the desired current. When the voltage drop across the current regulator exceeds an upper threshold, the voltage booster's output voltage is reduced to a lower level to reduce the power dissipated by the current regulator, to improve efficiency. When the voltage drop across the current regulator is less than a lower threshold, the voltage booster output is increased to a higher level. In burst mode operation, the voltage booster output alternates between a full voltage and zero voltage, and an optional capacitor provides voltage across the resistive load during discharge. An optional diode can ensure that the capacitor discharges through the load in cases where the voltage booster output is not floating.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: November 8, 2022
    Assignee: HEALABLES, LTD.
    Inventor: Yehuda Cern
  • Patent number: 11489446
    Abstract: In an embodiment, a method for operating a voltage step-down switched mode power supply includes delivering an output voltage with an output stage having a power transistor that is cyclically made conducting by a first control signal. In PWM mode, the method includes generating an error voltage based on the output voltage and a reference voltage, and applying a first delay on a first control signal. The first delay is determined so as to reduce a difference between the error voltage and the reference voltage.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: November 1, 2022
    Assignee: STMICROELECTRONICS (GRENOBLE 2) SAS
    Inventor: David Chesneau
  • Patent number: 11482925
    Abstract: A resonant converter and a variable cutoff frequency control method of the resonant converter are provided. The variable cutoff frequency control method includes obtaining a first relationship between a lower limit frequency of the resonant converter and a preset voltage outputted by the resonant converter; updating the preset voltage in the first relationship to a correlative voltage between the preset voltage and an actual voltage outputted by the resonant converter, to obtain a second relationship between the lower limit frequency and the correlative voltage; and limiting the lower limit frequency of the resonant converter according to the second relationship.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: October 25, 2022
    Assignee: ECOFLOW INC.
    Inventors: Lei Wang, Wenping Tong
  • Patent number: 11482927
    Abstract: A driving circuit for a switched capacitor converter having first and second switched capacitor branches, where the first switched capacitor branch includes first and second switch groups connected between an input voltage and a reference ground, the second switched capacitor branch includes third and fourth switch groups connected between the input voltage and the reference ground, and where each switch group includes an upper power switch and a lower power switch, the driving circuit comprising: a plurality of drivers configured to correspondingly drive each power switch in the switched capacitor converter; a bootstrap capacitor that provides a power supply voltage for each driver that is configured to drive the upper power switches that are connected to the input voltage of the switched capacitor converter; and where a charging voltage for charging the bootstrap capacitor is not greater than the input voltage of the switched capacitor converter.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: October 25, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Wang Zhang, Chen Zhao
  • Patent number: 11482930
    Abstract: A system that provides intelligent constant on-time control may include a first switch coupled to a power input; a second switch coupled to the first switch; a switching node between the first switch and the second switch, the switching node configured to be connected to an inductor and a power output; feedback paths coupled to (1) a synthesized node and (2) the power output, the feedback paths enabling feedback of signals from (1) the synthesized node, and (2) the power output; and a controller coupled to the feedback paths. The controller may be configured to control a voltage at the power output based on a combination of the signals carried by the feedback paths.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: October 25, 2022
    Assignee: Kinetic Technologies International Holdings LP
    Inventors: Xin Zhang, Jan Nilsson, William Robert Pelletier
  • Patent number: 11482933
    Abstract: There is provided a switching power supply device, including: an output stage circuit including an output transistor installed between an application end of an input voltage and an application end of an output voltage, and configured to generate the output voltage from the input voltage through a switching operation including an operation of switching the output transistor; and a main control circuit configured to execute PWM control for causing the output stage circuit to perform the switching operation at a predetermined PWM frequency based on a feedback voltage according to the output voltage.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: October 25, 2022
    Assignee: Rohm Co., Ltd.
    Inventors: Yosuke Fukumoto, Shun Fukushima
  • Patent number: 11476691
    Abstract: A single-stage battery charger system includes a switched capacitor converter coupled between an input power source and a load, an inductor coupled between a midpoint of the switched capacitor converter and the load, and an isolation switch coupled between the midpoint and the load, wherein the isolation switch is configured such that the single-stage battery charger system functions as a multilevel switching charger when the isolation switch is turned off, and the single-stage battery charger system functions as a switched capacitor charger when the isolation switch is turned on.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: October 18, 2022
    Assignee: Halo Microelectronics International
    Inventor: Rui Liu
  • Patent number: 11476767
    Abstract: A constant-current output control circuit includes a control module, a first resistor, a capacitor, and an error amplifier; the control module is connected to an adjustable control voltage and a detection signal, and the non-inverting input end of the error amplifier is connected to the reference voltage, the inverting input end of the error amplifier is connected to the first end of the first resistor, the output end of the error amplifier is connected to the circuit to be connected, and the first end of the capacitor is connected to the first end of the first resistor, the second end of the capacitor is connected to the output end of the error amplifier, and the second end of the first resistor is connected to the control module. The design method of the circuit is also disclosed.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: October 18, 2022
    Assignee: LII SEMICONDUCTOR CO., LTD.
    Inventors: Jie Zhang, Min Zhu, Fulong Wang
  • Patent number: 11476679
    Abstract: A battery pack system and methods for operating the battery pack system are disclosed. In one example, the battery pack system may simultaneously output two different voltages from a stack of battery cells. One voltage may be applied to a first group of electric power consumers and the second voltage may be applied to a second group of electric power consumers.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: October 18, 2022
    Assignee: A123 Systems, LLC
    Inventors: Bruce Blakemore, Hamid Falahati, Patrick Larochelle
  • Patent number: 11476768
    Abstract: A flyback converter to control conduction time in AC/DC conversion technology. The flyback converter includes a primary side and a secondary side. The primary side includes a main switch connecting a primary coil to the input of the flyback converter in series. The secondary side includes a secondary coil coupling with the output terminal of the flyback converter. When a switching frequency of the main switch is at a preset first on time in the range between the off frequency and the second switching frequency, the on-time of the main switch continuously changes corresponding to output load changes. When the switching frequency of the main switch is higher than the first switching frequency, the on time of the main switch is constant. The on time is controlled to change linearly, so as to avoid excessive changes in the output voltage ripples, thereby improving circuit efficiency.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: October 18, 2022
    Assignee: ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP
    Inventors: Jung-Pei Cheng, Hung-Ta Hsu
  • Patent number: 11469677
    Abstract: The present disclosure relates to a voltage source device comprising: a voltage converter for generating a supply voltage at an output node of the voltage converter based on a feedback signal provided on a feedback line; at least one switch coupled between the output node of the voltage converter and an output terminal of the voltage source device; and at least one further switch configured to selectively couple the feedback line to: the output node of the voltage converter during a first regulation mode; and to the output terminal of the voltage source device during a second regulation mode.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: October 11, 2022
    Assignee: STMICROELECTRONICS (GRENOBLE 2) SAS
    Inventors: Jean Camiolo, Alexandre Pons
  • Patent number: 11469663
    Abstract: A DC-DC converter including voltage and slope regulation and a method of operating the same are provided. Generally, the converter includes a voltage source to supply an output, a switching-circuit coupled to the voltage sources to control a voltage on the output, and a slope-detector coupled to the switching-circuit and the output to detect a slope of a voltage transition between a first and a second voltage. When the detected slope exceeds a predetermined maximum the slope-detector sends a digital signal to the switching-circuit to intermittently pause the voltage transition to limit the slope to less than the maximum. In one embodiment, the voltage source is a charge-pump, and the switching-circuit includes a logic-gate coupled to the slope-detector to turn the charge-pump ON when the detected slope is less than the maximum, and to turn OFF the charge-pump for a time when the slope exceeds the maximum.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: October 11, 2022
    Assignee: Infineon Technologies LLC
    Inventor: Oren Shlomo
  • Patent number: 11462993
    Abstract: A controller for controlling a bridge circuit in a vehicle power module, comprising an input interface for receiving an output current from the bridge circuit, an evaluation unit for determining an adaptive dead time based on the output current, wherein the adaptive dead time is coupled to a predetermined commutation time for the bridge circuit and limited by a predetermined minimum value, and a signal unit for generating a control signal for sending the adaptive dead time to the bridge circuit.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: October 4, 2022
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventor: Andreas Schmid
  • Patent number: 11456666
    Abstract: A zero current detection system for a switching regulator is provided. The switching includes an inductor. In the zero current detection system, a comparator has a positive input coupled to a terminal of the inductor and an output terminal for outputting a comparison result signal; a first signal latch circuit has a clock terminal for receiving the comparison result signal and outputting a latched output signal; a delay line module starts counting upon receipt of the latched output signal, and then outputs a zero current detection signal after counting a delay time; in response to the zero current detection signal, a voltage sampling module samples a node voltage at two different time points, to generate two sampling voltages; a delay control module adjusts the delay time of the delay line module according to the two sampling voltages.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: September 27, 2022
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventors: Ching-Yen Chiu, Chung Ming Hsieh
  • Patent number: 11429124
    Abstract: A voltage generation device and a voltage generation method are provided. The voltage generation device includes a first voltage generator, a second voltage generator, a third voltage generator and an output voltage generator. The first to third voltage generators respectively generate first to third voltages. The output voltage generator generates an output voltage at an output end according to the first voltage, the second voltage and the third voltage. When the output voltage is converted between the first voltage and the second voltage, during a first time period, the first voltage generator provides the first voltage to a first capacitor, and the third voltage generator causes the output voltage to change from the second voltage to the third voltage. During a second time period, the first voltage generator and the first capacitor cause the output voltage to change from the third voltage to the first voltage.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: August 30, 2022
    Assignee: ITE Tech. Inc.
    Inventors: Yi-Chung Chou, Yu-Chin Chen, Chih-Yuan Kuo
  • Patent number: 11398794
    Abstract: A system and method for thermal management in a variable frequency drive is provided. Aspects include receiving, by a processor, operational data associated with a variable frequency drive, the operational data including one or more operational parameters for the variable frequency drive, comparing the one or more operational parameters to a threshold, and operating the variable frequency drive to produce a first modulated output based at least in part on the one or more operational parameters being below the threshold.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: July 26, 2022
    Assignee: CARRIER CORPORATION
    Inventors: Ismail Agirman, Timothy M. Remmers
  • Patent number: 11353905
    Abstract: A first terminal receives a first DC voltage. A switch selectively couples the first terminal to a second terminal providing an output. A control circuit selectively actuates the switch in response to a comparison of the first DC voltage to a second DC voltage. A low-dropout (LDO) linear voltage regulator, connected between the first and third terminals, operates to provide the second DC voltage from the first DC voltage.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: June 7, 2022
    Assignees: STMicroelectronics (Grenoble 2) SAS, STMicroelectronics (Alps) SAS
    Inventors: Jean Camiolo, Alexandre Pons
  • Patent number: 11342737
    Abstract: A circuit includes a first input terminal; a second input terminal; a first output terminal; a second output terminal; a first parallel circuit including a first transistor and a first capacitor; and a second parallel circuit including a first resistor, a second resistor, a diode, and a second capacitor. The first parallel circuit and the second parallel circuit are each connected in parallel between the first input terminal and the second input terminal and in parallel between the first output terminal and the second output terminal.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: May 24, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Frank Warnes
  • Patent number: 11335289
    Abstract: A blur eliminating circuit and a display device are provided. The blur eliminating circuit includes a detection unit and a control unit. The detection unit generates a control signal after detecting and determining that the display device is shut down. The control unit controls a gate low voltage level outputted from a gate driving unit of the display device to be a predetermined voltage level according to the control signal, and thus turns on an active switch of the display device, thereby speeding up a discharging of a liquid crystal capacitor and a storage capacitor of the display device, and eliminating a shutdown blur phenomenon.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 17, 2022
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yu-Jen Chen
  • Patent number: 11335175
    Abstract: The disclosure is a connectivity APP loaded in a mobile phone for configuring a linkable security lighting system comprising a plurality of LED security lights installed outdoors, wherein by operating the connectivity APP the plurality of LED security lights are divided into N groups of member security lights to be linked. Each group of member security lights is assigned a group code to be applied to each member security light in the group such that within the group the member security lights are interlinked wirelessly via wireless signals prefixed with the same group code, wherein when a member security light is initiated by a sensing signal for operating an illumination mode, the member security light being initiated acts as a commander to transmit an instruction signal to activate all member security lights belonging to the same group code to synchronously operate the illumination mode.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: May 17, 2022
    Assignee: Vaxcel International Co., Ltd.
    Inventor: Chia-Teh Chen
  • Patent number: 11314271
    Abstract: A power supply control apparatus includes a voltage control transistor connected between a DC voltage input terminal and an output terminal; a control circuit which controls the voltage control transistor according to an output feedback voltage; and a first external terminal receiving an output control signal to control an output voltage. The control circuit includes a first error amplifier outputting a voltage according to an electric potential difference between a voltage divided by a first voltage dividing circuit which divides the output voltage of the output terminal and a predetermined reference voltage; and an output changing circuit including a second error amplifier receiving a voltage input in the first external terminal, a transistor having a control terminal receiving the output of the second error amplifier, and a current mirror circuit connected to the voltage input terminal which transfers an electric current flowing in the transistor.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: April 26, 2022
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Shinichiro Maki, Yoichi Takano, Katsuhiro Yokoyama
  • Patent number: 11303199
    Abstract: A method for limiting an input or output current of a DC-DC converter and a current limiting circuit are disclosed. In an embodiment a method for limiting an input or output current of a DC to DC converter includes storing a first value representative of a level of an output voltage of the DC to DC converter in response to the input or output current exceeding or falling below a first threshold and modifying a control signal based on the first value.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: April 12, 2022
    Assignee: STMICROELECTRONICS (GRAND OUEST) SAS
    Inventor: Lionel Cimaz
  • Patent number: 11295787
    Abstract: A methodology and apparatus are disclosed for providing standby power during standby mode by applying a low frequency sampling clock signal to first and second comparators which are connected to compare an output voltage generated at an external capacitor to, respectively, a first higher voltage threshold and a second lower voltage threshold, where the first comparator generates an enable signal in response to the output voltage reaching the first higher voltage threshold for use in activating one or more switched regulator circuits to pump up the output voltage at the external capacitor to exceed the first higher voltage threshold, and where the second comparator generates an undervoltage signal in response to the output voltage reaching the second lower voltage threshold for use in reactivating the main regulator to pump up the output voltage at the external capacitor to exceed the first higher voltage threshold.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: April 5, 2022
    Assignee: NXP B.V.
    Inventors: Andre Gunther, Gerard Villar Pique, Avin Kurup, Domenico Liberti
  • Patent number: 11296704
    Abstract: The present disclosure relates to a power control device, a driving module and a switching power supply device. The power control device includes: a control terminal, configured to input and output a control signal to and from the driving module; an enable output terminal, configured to output an enable signal to the driving module; a control circuit; and an input/output circuit, configured to have the control signal be a first logic level when the output transistor is turned on and the synchronous rectifier transistor is turned off, and to have the control signal be a second logic level when the output transistor is turned off and the synchronous rectifier transistor is turned on, and to be able to become an input standby state according to an instruction from the control circuit.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: April 5, 2022
    Assignee: Rohm Co., Ltd.
    Inventor: Tadashi Akaho
  • Patent number: 11296603
    Abstract: A mode switching circuit for a switching power supply having a power switch and a synchronous switch is configured to: control the switching power supply to switch between a first mode and a second mode in response to a transitioning of a load of the switching power supply, in order to suppress overshoot of an output voltage of the switching power supply; where an inductor current of the switching power supply is not less than zero in the first mode; and where the inductor current is allowed to be less than zero in the second mode.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: April 5, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventor: Di Luo
  • Patent number: 11288996
    Abstract: A display device includes a display unit including a plurality of pixels, a scan driver applying a scan signal to a plurality of scan lines, a data driver applying a data signal to a plurality of data lines, and a power supply unit supplying a driving voltage to at least one among the display unit, the scan driver, and the data driver. The power supply unit includes an inductor connected between an input terminal to which an input voltage is input and a driving voltage output terminal to which the driving voltage is output, a switch connected between the inductor and a ground, and a switch controller outputting a first ramp pulse having a first frequency at a first load of the display device and outputting a second ramp pulse having a second frequency at a second load of the display device.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: March 29, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang Hyun Lee, Myeong Su Kim, Bo Yeon Kim
  • Patent number: 11283359
    Abstract: A DC-DC converter includes a synchronous rectification converter that converts electric power, a voltage detection circuit that detects a voltage proportional to an output voltage of the converter, a converter controller that compares a detection voltage detected by the voltage detection circuit with a reference voltage and controls an operation of the converter to provide a constant or substantially constant voltage of the detection voltage, and a command processor that sets, in a case where a target voltage command value input from an ECU is lower than a voltage value of the output voltage of the converter, a voltage value of the reference voltage to be equal or substantially equal to a voltage value of the detection voltage.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: March 22, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yoshiyuki Uno, Yoshiaki Mizushima
  • Patent number: 11277064
    Abstract: An overvoltage protection circuit configured to prevent an overvoltage of an output voltage of a switching converter, can include: an output voltage simulation circuit configured to generate an output voltage simulation signal according to circuit parameters of the switching converter, where the output voltage simulation signal changes along with the output voltage; and an overvoltage signal generator configured to activate an overvoltage signal when a feedback voltage is less than a first threshold value and the output voltage simulation signal is greater than a second threshold value.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: March 15, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Dengke Chen, Hongfeng Fan
  • Patent number: 11264902
    Abstract: Apparatus and methods for controlling voltage converter are provided. In an example, a switched-mode DC-DC voltage converter can include an inductor, at least four switches coupled to the inductor and configured to direct current through the inductor to provide a desired output voltage at an output voltage terminal of the voltage converter using an input voltage supply and a ground reference of the converter, and a controller circuit, configured to receive an indication of inductor current through the inductor and to use the slope of the inductor current to control a change between two operating modes of a group of operating modes that include a boost operating mode, a buck operating mode, and a buck-boost operating mode.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: March 1, 2022
    Assignee: Analog Devices International Unlimited Company
    Inventors: Bin Shao, Danzhu Lu
  • Patent number: 11251711
    Abstract: A current control circuit for a power converter can include: a sense transistor coupled to a power transistor to be sensed; and a control circuit configured to control a voltage at a power terminal of the sense transistor in order to mirror a current flowing through the power transistor, to control the sense transistor to generate a sense current, and to generate a control signal for controlling operation states of the power transistor in accordance with the sense current and a reference current.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: February 15, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventor: Kaiwei Yao
  • Patent number: 11233455
    Abstract: Disclosed is a variable-frequency power controller. The controller includes a power pin, a ground pin, a driving pin, a voltage sensing pin, and a loading voltage sensing pin, and is in collocation with a rectification unit, an inductor unit, a switch unit, an output unit, a voltage sensing unit, and a loading voltage sensing unit to implement a variable-frequency power control of power conversion. The controller performs one of the burst mode, valley switch mode, quasi-resonance (QR) mode, conduction mode, and peak loading mode based on a wide range of loading level. In particular, the loading level covered by the present invention includes the ultra-light, light, middle, full, and over-heavy loading, and the features of power saving, low switching loss, operation safety are thus achieved. Further, any over design employed to meet the wide range of loading level is prevented.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: January 25, 2022
    Assignee: INNO-TECH CO., LTD.
    Inventors: Shu-Chia Lin, Tsu-Huai Chan, Chih-Feng Lin
  • Patent number: 11223274
    Abstract: Provided is a system of varying a dead time of a converter, including a converter including a plurality of semiconductor switches to which a dead time is applied during an alternate switching operation; and a controller controlling ON/OFF of the plurality of semiconductor switches and setting the dead time, wherein the controller varies the dead time during an operation of the converter. According to the present invention, an over dead-time may be detected and varied to an appropriate dead time, thereby minimizing power loss of the converter and increasing efficiency thereof.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: January 11, 2022
    Assignee: SOLUM CO., LTD.
    Inventors: Sang Keun Ji, Dong Kyun Ryu
  • Patent number: 11218076
    Abstract: A switching converter circuit includes a hysteretic comparator with a reference voltage (VREF) node and a feedback node. The switching converter circuit also includes a switchable error amplifier circuit coupled to the feedback node of the hysteretic comparator. The switchable error amplifier circuit includes an error amplifier that is coupled to the feedback node during a power-save mode and that is decoupled from the feedback node during a deep power-save mode initiated in response to a duration of the power-save mode being greater than a time threshold.
    Type: Grant
    Filed: August 31, 2019
    Date of Patent: January 4, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Antonio Priego, Johann Erich Bayer, Gerhard Thiele
  • Patent number: 11211862
    Abstract: An apparatus for electric power conversion includes a converter having a regulating circuit and switching network. The regulating circuit has magnetic storage elements, and switches connected to the magnetic storage elements and controllable to switch between switching configurations. The regulating circuit maintains an average DC current through a magnetic storage element. The switching network includes charge storage elements connected to switches that are controllable to switch between plural switch configurations. In one configuration, the switches forms an arrangement of charge storage elements in which at least one charge storage element is charged using the magnetic storage element through the network input or output port. In another, the switches form an arrangement of charge storage elements in which an element discharges using the magnetic storage element through one of the input port and output port of the switching network.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: December 28, 2021
    Assignee: pSemi Corporation
    Inventor: David M. Giuliano
  • Patent number: 11201535
    Abstract: An apparatus and a method for controlling a switching device for a power converter are provided. The apparatus includes a gate driver configured to apply a first driving voltage and a second driving voltage to the gate terminal based on one turn-on of the switching device, wherein the first driving voltage and the second driving voltage have different values; to turn on the switching device; and a controller configured to control the gate driver such that the gate driver applies the second driving voltage to the gate terminal after the first driving voltage is applied to the gate terminal.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: December 14, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Kang Ho Jeong, Ji Woong Jang, Sang Cheol Shin
  • Patent number: 11190102
    Abstract: A regulating circuit including a first direct current (DC)-DC converter configured to apply a first supply voltage to a first node in a first mode and apply the first supply voltage to a second node in a second mode, a first low drop output (LDO) regulator connected to the first node, the first LDO regulator configured to provide an output voltage to an output node by regulating the first supply voltage of the first node, and a second LDO regulator connected to the first node, the second LDO regulator configured to provide an auxiliary current to the first node in the second mode may be provided.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: November 30, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ikhwan Kim, Takahiro Nomiyama, Jiseon Paek, Jaeyeol Han
  • Patent number: 11177729
    Abstract: A method and system are provided for supplying power with an LDO linear voltage regulator (110) having an LDO power supply (114, 115) and a load switch (116) by connecting a power supply voltage (102, 104) to a main core (121) and a standby core (122) in a multi-core low power microcontroller (120) during an active mode so that the standby core receives a first supply voltage that tracks the power supply voltage during the active mode, and upon detecting a standby mode for the multi-core low power microcontroller, disconnecting the power supply voltage from the standby core and connecting a low dropout (LDO) linear power supply voltage to the standby core during the standby mode so that the standby core receives the LDO linear power supply voltage as a second supply voltage during the standby mode.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: November 16, 2021
    Assignee: NXP USA, Inc.
    Inventors: Alaa Eldin Y El Sherif, Keith Jackoski, Neal G. Baltz, Ruchika Pandya, Bo Wu
  • Patent number: 11171563
    Abstract: A power converter circuit that includes a switch node coupled to a regulated power supply node via an inductor may, during a discharge cycle, sink current from the regulated power supply node. A control circuit may generate the rising and falling ramp signals using voltage levels of an input power supply node and the regulated power supply node. The control circuit may also determine a duration of the discharge cycle using results of comparing respective voltage levels of the generated rising and falling ramp signals.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: November 9, 2021
    Assignee: Apple Inc.
    Inventors: Michael Couleur, Yesim Inam, Dashun Xue
  • Patent number: 11150281
    Abstract: An information processing device, a method and computer program product are disclosed. The information processing device includes a component, a resistance unit, and a measurement unit that measures a voltage drop of the resistance unit, wherein the resistance unit is connected on an electric power line. The method includes providing electric power to a component, adjusting a resistance unit based on an operating state of a control unit, and measuring a voltage drop of the resistance unit with a measurement unit. The computer program product includes executable code to perform providing electric power to a component; adjusting a resistance unit based on an operating state of a control unit, and measuring a voltage drop of the resistance unit with a measurement unit.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: October 19, 2021
    Assignee: Lenovo (Singapore) PTE. LTD.
    Inventors: Toshinari Sumikawa, Takuo Yamagishi
  • Patent number: 11137822
    Abstract: Circuitry may monitor a processor supply voltage and pull power from the processor supply on a temporary basis when the supply voltage rises above predetermined levels. In some embodiments this may be done without explicit knowledge of a commanded supply voltage level for the processor.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: October 5, 2021
    Assignee: Chaoyang Semiconductor Jiangyin Technology Co., Ltd.
    Inventors: Anatoly Gelman, Taner Dosluoglu
  • Patent number: 11139738
    Abstract: A converter circuit is disclosed. The converter circuit includes a controller configured to operate a pull up component and a pull down component so as to deliver power to a load through an inductor. The controller is configured to operate in either of first and second operational modes based on average current delivered to the load. The converter circuit also includes a mode control circuit configured to change operational modes in response to an indication of current flowing from the inductor to the switch node, and in response to an indication that the average current delivered to the load is greater than the current threshold.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: October 5, 2021
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventors: Esmail Babakrpur Nalousi, Siavash Yazdi, Ahmed Emira
  • Patent number: 11134548
    Abstract: A driving device includes, for example: an output terminal; a transistor configured to generate an output current to the output terminal; a logic circuit configured to perform on/off control of the transistor at a predetermined period; and a current sense circuit configured to sense the output current. The current sense circuit is configured to be enabled during an on-period of the transistor. The logic circuit is configured to suspend the on/off control and reset the period when the output current becomes lower than a first threshold value during the on-period.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: September 28, 2021
    Assignee: Rohm Co., Ltd.
    Inventors: Masaaki Nakayama, Vishwajit Babasaheb Bugade
  • Patent number: 11075577
    Abstract: A power supply includes a reference voltage generator circuit, a ramp generator circuit, and control circuitry. During operation, the reference voltage generator circuit compares a magnitude of a received output voltage feedback signal to a received reference voltage. Based on the comparison, the reference voltage generator circuit produces a varying reference voltage and outputs it to the ramp generator circuit. As its name suggests, a magnitude of the varying reference voltage varies over time. The ramp generator circuit produces a ramp voltage signal, a magnitude of which is offset by the varying reference voltage. To maintain an output voltage of the power supply within regulation, the control circuitry receives the varying reference voltage and controls activation of a power converter circuit to power a load based on a comparison of the ramp voltage signal and the output voltage feedback signal of the power supply.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: July 27, 2021
    Assignee: Infineon Technologies Americas Corp.
    Inventors: Danny Clavette, Kang Peng, Keng Chen, Mark A. Crowther
  • Patent number: 11068005
    Abstract: A power factor correcting method for correcting a power factor in an alternating current power supply includes detecting zero-crossing points of an input voltage VAC of the AC power supply to obtain a period T of the input voltage VAC; generating a half-wave symmetric periodic function f(t) by using the period T; implementing a recursive low-pass filter y(t) by using the half-wave symmetric periodic function f(t), so that an output of the recursive low-pass filter y(t) matches a target reactive current Ixcap(t) flowing through an X-capacitor; generating a reference current I?ref(t) for correcting the power factor by using a given reference current Iref(t) and the recursive low-pass filter y(t); and correcting the power factor by using the reference current I?ref(t). Accordingly, the reactive current of the EMI capacitor can be compensated in a high code efficiency manner.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: July 20, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Hungpiu Poon
  • Patent number: 11043896
    Abstract: A voltage regulator has a switching circuit and a control circuit. The switching circuit receives an input voltage and provides an output voltage and an output current. The control circuit provides a control signal to the switching circuit, such that the output voltage is maintained at a clamp voltage level when the output current is lower than a transition current level, and the output voltage decreases as the output current increases when the output current is higher than the transition current level.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: June 22, 2021
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Ting Ge, Daocheng Huang
  • Patent number: 11038426
    Abstract: Circuits and methods for operating a programmable load circuit that includes a plurality of sub-circuits connected in parallel between an input and an output. Each sub-circuit may include an inductor, a load, and a switch coupled to the inductor. Each switch may be configurable in a first state and a second state, wherein the inductor is either connected to the output through the load or connected to the output through a connection that bypasses the load. The switches of the plurality of first sub-circuits may be programmable to periodically switch between the first state and the second state according to a duty cycle, and the switches may be out of phase with each other by a predetermined amount. The duty cycle may be programmable to tune the load of the programmable load circuit.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: June 15, 2021
    Assignee: National Instruments Corporation
    Inventor: Chin-Hong Cheah
  • Patent number: RE49184
    Abstract: A DC-DC converter having a coupling network is provided, in which the coupling network is so configured as to forcibly add a noise source to a feedback output voltage of the DC-DC converter. The coupling network includes one coupling resistor and two coupling capacitors to include the switching voltage of a power switch and inductor output voltage into the output voltage, and transmit the result together with the feedback output voltage to the comparator. Accordingly, it is easier to compare the reference voltage and the feedback voltage, and stably maintain the output voltage of the DC-DC converter operating in constant on-time (COT).
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: August 23, 2022
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Tim Yu, Greg Wardle