With Plural Condition Sensing Patents (Class 323/285)
  • Patent number: 11309797
    Abstract: A voltage regulation system utilizes a controller to select one of a continuous comparator and a discrete comparator to operate, making one of the continuous comparator and the discrete comparator output a pulse signal to the controller. The controller controls a switched power stage circuit to supply power to a load element. Through the aforementioned configuration, the switched power stage circuit adjusts the power supply based on the condition of the load element, thus decreasing the power loss of the switched power stage circuit.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: April 19, 2022
    Assignee: NUVOTON TECHNOLOGY CORPORATION
    Inventor: Chung-Ming Hsieh
  • Patent number: 11289998
    Abstract: In some examples, an apparatus comprises a switching regulator circuit, an output circuit, a duty cycle comparison circuit, a current comparison circuit, and a switching regulator control circuit. The switching regulator circuit switches between first and second voltages. The output circuit has a voltage input and a voltage output and generates a signal based on the first and second voltages. The duty cycle comparison circuit asserts a first signal responsive to a voltage at the voltage output exceeding a product of a multiplier and a reference signal. The current comparison circuit asserts a second signal responsive to a voltage at the voltage input exceeding a first reference voltage and to assert a third signal responsive to the voltage at the voltage input being below a second reference voltage. The switching regulator control circuit controls the switching regulator circuit based on the first, the second, and the third signals.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: March 29, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Juha Olavi Hauru, Ari Kalevi Väänänen, Antti Juhani Korhonen, Janne Matias Pahkala, Jussi Matti Aleksi Särkkä
  • Patent number: 11264892
    Abstract: A power-supply apparatus includes a power-supply circuit to which an input voltage and an input current are input, to include a switching element to be controlled by a control signal so as to generate an output voltage and an output current, a memory, and a processor coupled to the memory and the processor to calculate a first duty ratio of the control signal so that the output voltage approaches a target voltage, calculate a second duty ratio of the control signal for the switching element, based on the input voltage, the input current, the output voltage, and the output current, detect deterioration of the power-supply circuit, based on the first duty ratio and the second duty ratio, generate the control signal of the first duty ratio when the power-supply circuit has not deteriorated, and generate the control signal for stopping the power-supply circuit when the power-supply circuit has deteriorated.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: March 1, 2022
    Assignee: FUJITSU LIMITED
    Inventors: Hiroshi Nakao, Yu Yonezawa, Yoshiyasu Nakashima
  • Patent number: 11262395
    Abstract: A switching network includes a switch, a driver for the switch, and a floating-regulator that powers the driver. The floating-regulator includes a shunt that is used only when testing the network. The shunt diverts biasing current so that it does not interfere with a measurement of an electrical property of a switch.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: March 1, 2022
    Assignee: pSemi Corporation
    Inventors: Gregory Szczeszynski, Brian Zanchi
  • Patent number: 11233450
    Abstract: According to an aspect, a power supply is provided. The power supply includes a plurality of voltage converters including a first voltage converter and one or more other voltage converters. The power supply also includes a power supply control configured to perform a plurality of operations including enabling the first voltage converter during a start-up mode of operation, monitoring and regulating an output of the first voltage converter, reconfiguring the power supply control to enable the one or more other voltage converters based on determining that the output of the first voltage converter meets a regulation threshold, and transitioning from the start-up mode of operation to a regular mode of operation based on enabling the one or more other voltage converters to output one or more regulated voltages by the power supply.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: January 25, 2022
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Vaibhav Kumar Somani, William E. Villano, Alagan Thiruvarul Selvakkumaran Sathyan, Raviprakash Yadav, Ishwar Bhat
  • Patent number: 11228307
    Abstract: In recent years, an improvement in detection accuracy of an overcurrent is desired. An overcurrent detection device is provided, which includes a gate current detection unit that detects whether a gate current flowing to a semiconductor element is equal to or above a reference gate current; a sense current detection unit that detects whether a sense current flowing through a sense-emitter terminal of the semiconductor element is equal to or above a reference sense current; and an adjustment unit that decreases a detected value of the sense current relatively to the reference sense current if the gate current is equal to or above the reference gate current.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: January 18, 2022
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Masashi Akahane
  • Patent number: 11223273
    Abstract: An electronic circuit includes a Pulse Width Modulation (PWM) circuit, a sub-harmonic reduction circuit, and a voltage feedback circuit. The PWM circuit produces a PWM signal according to a voltage control signal, a current of the electronic circuit, and a maximum duty cycle. When the electronic circuit is operating in a peak current limit mode, the sub-harmonic reduction circuit generates a feedback adjustment signal according to whether the current of the electronic circuit exceeds a peak current limit, whether a duty cycle of the PWM signal is greater than or equal to the maximum duty cycle, whether the voltage control signal is controlling the duty cycle of the PWM signal, or combinations thereof. The voltage feedback circuit generates the voltage control signal according to an output voltage produced using the PWM signal, a value of a reference voltage, and a value of the feedback adjustment signal.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: January 11, 2022
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Yung-I Chang, Gabriel Eirea, Shawn Laliberte
  • Patent number: 11146178
    Abstract: A current output apparatus adapted for electrical connection to a load to output an electrical current thereto. The apparatus comprises a current output terminal for connecting to a first terminal of the load to pass an electrical current thereto. A current input terminal is provided for connecting to a second terminal of the load to receive said electrical current returned from the load. A voltage regulator is operable to supply to the current output terminal an electrical voltage regulated to differ from an electrical voltage applied to the current input terminal by an amount sufficient to cause said electrical current to flow from the current output terminal to the current input terminal via the load.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: October 12, 2021
    Assignee: Pepperl+Fuchs SE
    Inventor: Peter Lark
  • Patent number: 11121629
    Abstract: A regulator device includes a first switch, a second switch, and a controlling circuit. A control terminal of the first switch is configured to receive a first control signal. A first terminal of the second switch is coupled with a second terminal of the first switch at a node. A control terminal of the second switch is configured to receive a second control signal. The controlling circuit is coupled to the control terminal of the first switch, the control terminal of the second switch, and the node. The controlling circuit outputs the first control signal with a first slope to the first switch during a first period, and outputs the first control signal with a second slope to the first switch during a second period. The first period is less than the second period, and the first slope is larger than the second slope.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: September 14, 2021
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Wei-Wen Ou, Shih-Chieh Chen, Chien-Sheng Chen
  • Patent number: 11121618
    Abstract: The disclosure provides a power switching circuit. The power switching circuit includes a driving circuit, a determining circuit, a first power switch, and a second power switch. The driving circuit outputs a first driving signal and a second driving signal. The determining circuit is coupled to the driving circuit and outputs a control signal to the driving circuit. The first power switch is coupled to a first input voltage and receives the first driving signal. The second power switch is coupled to a second input voltage and receives the second driving signal. When the first power switch and the second power switch are switched, the second driving signal rises from a first level to a preset level, and the determining circuit controls the driving circuit to utilize the first driving signal to turn off the first power switch.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: September 14, 2021
    Assignee: uPI Semiconductor Corp.
    Inventors: Chih-Wen Hsiao, Wen-Chieh Tsai
  • Patent number: 11087099
    Abstract: A multiplier has a MOSFET in a common source configuration. A MOSFET current source is coupled to a drain terminal of the MOSFET. An inverter has an input coupled to the drain terminal of the MOSFET. An output of the inverter gates two currents whose current magnitudes are proportional. A first capacitor has a first terminal coupled to a first of the two currents and a gate of the MOSFET and a second terminal grounded. A second capacitor has a first terminal coupled to a second of the two currents and a second terminal coupled to the first of the two currents. The multiplier is first reset by discharging a gate capacitance of the MOSFET and then allowing it to be recharged to a Vt comparator threshold after which a charge is removed from the gate terminal of the MOSFET reducing a voltage on the gate terminal below the Vt comparator threshold, causing the two currents to be enabled until the Vt comparator threshold reaches a previous Vt comparator threshold and the inverter turns off the two currents.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: August 10, 2021
    Assignee: AISTORM, INC.
    Inventors: David Schie, Sergey Gaitukevich, Peter Drabos, Andreas Sibrai, Erik Sibrai
  • Patent number: 11081961
    Abstract: According to one embodiment, a power convertor includes a buck-boost circuit to be applied with an input voltage to convert the input voltage into an output voltage for output, the input voltage being generated by a power generation module that generates direct-current power; a switching controller that executes maximum power-point tracking to control power conversion of the buck-boost circuit such that the power generation module generates maximum direct-current power; and a mode controller that causes the switching controller to execute the maximum power-point tracking when an input current from the power generation module is larger than a preset current threshold, and when the input current is equal to or less than the current threshold, causes the switching controller to stop the maximum power-point tracking, and cause the buck-boost circuit to output the input voltage as the output voltage without the power conversion.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: August 3, 2021
    Assignee: TAIYO YUDENCO., LTD.
    Inventors: Akifumi Kosugi, Hiroshi Okawa, Yoshitugu Iijima, Masataka Sashikata, Yoji Imai
  • Patent number: 11074857
    Abstract: The present invention teaches a DC boost circuit and method. The circuit includes an inductor, a diode, a first capacitor, a first FET, a first voltage conversion unit, a voltage drop detection module, a reference voltage adjustment module, and a control module. After a load is connected, the voltage drop detection module obtains a current flowing through the diode and outputs a corresponding second voltage to the reference voltage adjustment module, causing an output voltage from the reference voltage adjustment module greater than an original reference voltage. The control module controls the first FET to increase a ratio of its conduction interval to its cutoff interval in a cycle of conduction and cutoff, thereby increasing the output voltage to compensate the voltage drop resulted from the impedance between the DC boost circuit and the load. The output voltage is therefore ensured to have a stable level.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: July 27, 2021
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Bobiao Chang
  • Patent number: 11038427
    Abstract: A DC-DC converter operates in a burst mode having at least one charge cycle with a charging phase followed by a discharging phase. A charging phase is terminated when an inductor current flowing through an inductance connected to the DC-DC converter reaches a compensated peak-current threshold, wherein the compensated peak-current threshold compensates for charging-phase loop delay. A discharging phase is terminated when the inductor current reaches a compensated valley-current threshold, wherein the compensated valley-current threshold compensates for discharging-phase loop delay.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: June 15, 2021
    Assignee: NXP B.V.
    Inventors: Jitendra Prabhakar Harshey, Hendrik Johannes Bergveld, Edevaldo Pereira da Silva, Jr., Koteswararao Nannapaneni, Uday Kumar Sajja
  • Patent number: 11038414
    Abstract: Techniques for fine tuning efficiency of a power converter are provided. In an example, a method can include acquiring a plurality of samples of an electrical characteristic of the power converter over a range of switching frequencies of the power converter to provide a plurality of sample pairs, estimating a corner value of the electrical characteristic based on the plurality of samples pairs, estimating a corresponding frequency associated with the corner value of the electrical characteristic based on frequencies of the plurality of sample pairs, and setting a switching frequency of the power converter at the corresponding frequency.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: June 15, 2021
    Assignee: Analog Devices International Unlimited Company
    Inventors: Jindong Zhang, Jian Li
  • Patent number: 11038423
    Abstract: A frequency control circuit, applied in a switching converter, can be configured to: regulate an off time of a power transistor of the switching converter in one switching cycle according to an on time of the power transistor, or regulate the on time of the power transistor in one switching cycle according to the off time of the power transistor; and maintain an operating frequency of the switching converter to be within a predetermined range.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: June 15, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Hao Chen, Le Li, Xinlei Li
  • Patent number: 11025169
    Abstract: A circuit includes an overload monitor comparing a current sense signal to a threshold signal to generate a comparison result and adjusting a value of a first count signal in response to the comparison result and a monitoring signal. The monitoring signal indicates a time interval during which the overload monitor adjusts the value of the first count signal. The circuit further includes an overload protection signal generator generating an overload protection signal in response to the first count signal, the overload protection signal indicating whether the power converter is operating in an overload condition.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: June 1, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Hyun-Chul Eum, Young-Jong Kim
  • Patent number: 11018587
    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to reduce switching losses occurring in power converters. An example a converter including an input voltage node and an output voltage node, a controller coupled to the converter, and a compensation network coupled to the converter and to the controller, the compensation network adapted to conduct a current to the converter in response monitoring a first voltage at the input voltage node being a threshold difference than a second voltage at the output voltage node.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: May 25, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Isaac Cohen
  • Patent number: 11018582
    Abstract: A circuit includes a first transistor and a second transistor coupled to the first transistor at a switch node and to a ground node. An estimator circuit receives a first signal to control an on and off state of the first transistor. The estimator circuit generates a second signal to control the on and off state of the second transistor. The second signal has a pulse width based on a pulse width of the first signal. A clocked comparator includes a clock input, a first input, and a second input. The first input receives a voltage indicative of a voltage of the switch node. The second input is coupled to a ground node. The clock input receives a third signal indicative of the second signal. The clocked comparator generates a comparator output signal. The estimator circuit adjusts the pulse width of the second signal based on the comparator output signal.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: May 25, 2021
    Assignee: Texas Instruments Incorporated
    Inventors: Saurav Bandyopadhyay, Michael G. Amaro, Michael Thomas DiRenzo, Thomas Matthew LaBella, Robert Allan Neidorff
  • Patent number: 11011993
    Abstract: A power supply can be driven in parallel in a master-slave arrangement using fewer wires. Each power supply includes: input terminals; output terminals; a master terminal; a slave terminal; a switching power supply that switches an inputted voltage and executes one of a constant-voltage operation that outputs a DC voltage of a target voltage value and a constant-current operation that outputs a DC current of a target current value; an indicative voltage generator that generates a current detection signal indicating the current outputted from the output terminals, superimposes a bias voltage (>a threshold voltage), and outputs to the master terminal; and an operation switcher that compares a voltage applied to the slave terminal and the threshold voltage and outputs, based on the result, a control signal for switching to the constant-voltage operation or the constant-current operation, to the switching power supply.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: May 18, 2021
    Assignee: TDK CORPORATION
    Inventor: Eiji Takegami
  • Patent number: 10992238
    Abstract: A power harvesting system including multiple parallel-connected photovoltaic strings, each photovoltaic string includes a series-connection of photovoltaic panels. Multiple voltage-compensation circuits may be connected in series respectively with the photovoltaic strings. The voltage-compensation circuits may be configured to provide respective compensation voltages to the photovoltaic strings to maximize power harvested from the photovoltaic strings. The voltage-compensation circuits may be include respective inputs which may be connected to a source of power and respective outputs which may be connected in series with the photovoltaic strings.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: April 27, 2021
    Assignee: Solaredge Technologies Ltd.
    Inventors: Ilan Yoscovich, Ofir Bieber, Tzachi Glovinsky
  • Patent number: 10985655
    Abstract: Slope-compensated current mode DC-DC converters. Example embodiments are methods of operating a slope-compensated current mode DC-DC converter including asserting a pulse width modulation (PWM) signal in a switching period to couple an input voltage to the inductor; sensing an inductor current through an inductor to generate a sensed current signal; generating a slope compensation signal having a peak amplitude during the switching period; generating a slope offset signal based on a sum of a predefined threshold with a product of a duty cycle of the PWM signal and the peak amplitude; and de-asserting the PWM signal during the switching period based on the sensed current signal and the slope offset signal.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: April 20, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Dominique Romeo
  • Patent number: 10959301
    Abstract: A polarity correction circuit for dimmer includes a control circuit, an adjustment circuit, and a detection circuit. The adjustment circuit is connected to the control circuit, a working voltage input end, and a dimmer, and the adjustment circuit includes several switches. The adjustment circuit receives a dimming signal of the dimmer. The detection circuit is connected to the dimmer and the control circuit, the detection circuit detects the dimming signal to generate a reference voltage, and the detection circuit transmits the reference voltage to the control circuit. The control circuit maintains the switch states of the switches of the adjustment circuit unchanged or adjust the switch states of the switches of the adjustment circuit according to the reference voltage.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: March 23, 2021
    Assignee: Xiamen PVTECH Co., Ltd.
    Inventors: Fuxing Lu, Rongtu Liu
  • Patent number: 10944599
    Abstract: A coupling module can be used to communicate high speed signals between an optical transceiver and a processing module of an optical communication device, such as an optical line termination (OLT) or an optical network unit (ONU). The coupling module can adjust the common mode voltage level of a differential signal output by the optical transceiver to the common mode voltage level required by the processing module. In addition, the coupling module splits each of the differential output signals from the optical transceiver and passes the split signals to both a high-pass filter and a low-pass filter that are connected in parallel. The outputs of the high-pass filter and the low-pass filter from different paths of the differential signal are cross-coupled and combined to provide a differential signal to the processing module.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: March 9, 2021
    Assignee: ADTRAN, Inc.
    Inventors: Daniel M. Joffe, Vern Brethour
  • Patent number: 10931194
    Abstract: A system, DC-DC converter, and compensation method and circuit for a DC-DC converter are disclosed. For example, a compensation circuit for a DC-DC converter is disclosed. The compensation circuit includes an integrator circuit configured to receive and integrate a first voltage signal, a differential difference amplifier circuit coupled to the integrator circuit and configured to generate a first filter transfer function associated with the integrated first voltage signal, and a switched capacitor filter circuit coupled to the differential difference amplifier circuit and configured to generate a second filter transfer function, wherein the differential difference amplifier is further configured to output a second voltage signal responsive to the first filter transfer function and the second filter transfer function. In one implementation, the compensation circuit is a type-III switched capacitor filter (SCF) compensation circuit.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: February 23, 2021
    Assignee: Intersil Americas LLC
    Inventor: Gaurav Bawa
  • Patent number: 10924009
    Abstract: A method includes converting an input signal into an output signal in response to a modulation signal, generating a timeout signal in response to the modulation signal, generating a comparison signal according to the output signal, determining whether the comparison signal is equal to or greater than a sense signal, determining whether the timeout signal has a first logic value, and causing the modulation signal to have the first logic value when the comparison signal is equal to or greater than the sense signal and the timeout signal has the first logic value. A switching power supply circuit includes a power converter, a timer circuit generating the timeout signal, and a controller causing the modulation signal to have the first logic value when the comparison signal is equal to or greater than the sense signal and the timeout signal has the first logic value.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: February 16, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Gang Chen, Rong-Shyang Ou
  • Patent number: 10924010
    Abstract: A control circuit for a switching regulator can include: an ON signal generator that generates an ON signal; an OFF signal generator that generates a first control signal according to an input voltage and an output voltage of the switching regulator; an on time regulator that generates an adjustment signal according to a switching signal and the first control signal; and a logic circuit configured to generate an off signal according to the first control signal, and to generate the switching signal according to the ON signal and the OFF signal, where the on time of the first switch is regulated according to the off time of the first switch when the off time of the first switch is less than the reference time, in order to regulate a duty cycle of the switching signal.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: February 16, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventor: Liangwei Sun
  • Patent number: 10910823
    Abstract: A semiconductor device protection circuit for a semiconductor device driving circuit that switches a voltage-controlled semiconductor device ON and OFF includes a current detection circuit that detects current flowing through the semiconductor device and generates and outputs a current detection voltage representing the detected current; an overcurrent detection circuit that compares the current detection voltage to a variable overcurrent detection threshold voltage so as to detect for overcurrent flowing through the semiconductor device; a protection circuit that, when the overcurrent detection circuit detects overcurrent, controls the ON/OFF switching of the semiconductor device so as to prevent thermal breakdown of the semiconductor device; and a gate voltage detection circuit that, in accordance with a gate voltage of the semiconductor device, selectively sets the overcurrent detection threshold voltage to either a first threshold voltage or a second threshold voltage that is lower than the first threshol
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: February 2, 2021
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Kei Minagawa
  • Patent number: 10895605
    Abstract: A life estimation apparatus includes a second calculation unit that calculates a remaining capacity, which is a capacity with which the lithium ion secondary cell is capable of being charged or which the lithium ion secondary cell is capable of discharging, based on Equation 1 having an exponent n1 of 0.9 to 1.1 and Equation 2 having an exponent n2 of 0.4 to 0.6. The second calculation unit calculates the remaining capacity using Equation 1 if the amount of change of open circuit voltage, the amount of change of a voltage rise width, or the amount of change of a voltage rise rate has a positive value and calculates the remaining capacity using Equation 2 if the amount of change of the open circuit voltage, the amount of change of the voltage rise width, or the amount of change of the voltage rise rate has a negative value.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: January 19, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuta Kuroda, Masanobu Takeuchi
  • Patent number: 10889201
    Abstract: Provide is a power supply redundant system in which power supply systems of different voltages coexist, which allows electric power to be supplied to a load even if a ground fault or short circuit occurs therein. The system includes a DCDC converter, a first side of the DCDC convertor being connected to a first battery having a first voltage, a first switch provided between a second battery having a second voltage different from the first voltage and a second side of the DCDC converter, a load operating with the second voltage, separately connected to the second battery and the second side of the DCDC converter, and a controller monitoring a voltage of the second battery by turning on the first switch, and when the voltage of the second battery becomes equal to or lower than a first reference value, switching off the first switch and allowing the DCDC converter to output the second voltage from the second side.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: January 12, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Kazuhisa Wataru, Kenji Kazumi
  • Patent number: 10890933
    Abstract: The disclosure relates to voltage regulators and more specially voltage regulators including error detection and correction mechanisms. Example embodiments include a voltage regulator comprising: an input arranged to receive a trim signal used to specify a target voltage at an output of the regulator; a comparator arranged to compare a voltage derived from the trim signal to the voltage at the output of the regulator; a filter arranged to filter an output of the comparator; a checksum module comprising first and second portions arranged to calculate first and second checksums respectively from a plurality of states associated with the voltage regulator and to provide an error signal equal to the difference between the first and second checksums; and an adjustment module arranged to receive the error signal and adjust one or more of the plurality of states if the error signal is non-zero.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: January 12, 2021
    Assignee: NXP B.V.
    Inventor: Jan-Peter Schat
  • Patent number: 10892683
    Abstract: An electronic circuit includes an inductive element outputting an inductor current, a first transistor, a second transistor, and a load current estimator circuit. The first transistor is connected between a first end of the inductive element and a reference terminal. The second transistor is connected between the first end of the inductive element and an output terminal for outputting a load current. The load current estimator circuit receives a first voltage which is sensed between both ends of the second transistor in response to the inductor current while the first transistor is turned off and the second transistor is turned on, and outputs a second voltage based on a level of the first voltage at a reference time point within a time interval when the second transistor is turned on. The second voltage is associated with an intensity of the load current.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: January 12, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hyunseok Nam
  • Patent number: 10886856
    Abstract: A power converter includes a power converting circuit, an output current control circuit, a high-voltage control circuit, a low-voltage control circuit, and a driving circuit. The power converting circuit receives and converts a HV dc voltage from a HV side to a LV dc voltage to a LV side. The output current control circuit is configured to detect an output current and output a first control signal. The high-voltage control circuit is configured to detect the HV dc voltage and output a second control signal. The low-voltage control circuit is configured to detect the LV dc voltage and output a third control signal selectively according to the LV dc voltage, or the LV dc voltage and the first control signal, or the LV dc voltage and the second control signal. The driving voltage outputs a driving signal to drive the power converting circuit according to the third control signal.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: January 5, 2021
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chia-Cheng Yang, Chen-Bin Huang, Jui-Teng Chan
  • Patent number: 10886910
    Abstract: A semiconductor device, including a main switching element having a gate terminal and an emitter terminal, a sense switching element connected to the main switching element for detecting a current flowing through the main switching element, and a voltage division circuit connected between the gate terminal and the emitter terminal of the main switching element. The voltage division circuit includes a first resistor and a second resistor connected in series. A connection point of the first resistor and the second resistor is connected to the sense switching element, so that a voltage applied to the gate terminal of the main switching element is divided by the voltage division circuit, and a portion of the voltage is applied to the sense switching element.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: January 5, 2021
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Masahiro Sasaki
  • Patent number: 10886854
    Abstract: A control circuit can include: a power supply circuit having a bias capacitor coupled between a power terminal and a common node, where the power supply circuit supplies power to the control circuit via the bias capacitor; a detection circuit coupled between the common node and a current output terminal of a main power switch of a power stage circuit, to detect current flowing through the main power switch; a current feedback circuit that generates a feedback signal according to a difference value between a sense value obtained from a voltage at the power terminal during an off state of the main power switch and a present voltage at the power terminal, where the feedback signal represents an inductor current of the power stage circuit; and a control signal generator that generates a control signal according to the feedback signal to control the main power switch.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: January 5, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Qiukai Huang, Xiaoru Xu
  • Patent number: 10855182
    Abstract: A power conversion circuit includes an error amplifying circuit, a first comparison circuit, a second comparison circuit and a control circuit. The error amplifying circuit provides an output signal. The first comparison circuit, coupled to the error amplifying circuit, receives the output signal and a ramp signal to generate a first comparison signal. The second comparison circuit receives an output voltage and a first reference voltage and provides a second comparison signal. The control circuit, coupled to the error amplifying circuit, the first comparison circuit and the second comparison circuit, provides a control signal to control the error amplifying circuit according to the first comparison signal, the second comparison signal and an enabling signal. In a first operation mode of error amplifying circuit, the output signal is an error amplifying signal. In a second operation mode of error amplifying circuit, the output signal is a second reference voltage.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: December 1, 2020
    Assignee: UPI SEMICONDUCTOR CORP.
    Inventors: Wei-Hsiu Hung, Chih-Lien Chang
  • Patent number: 10848059
    Abstract: Systems and methods of memory operation involving charge pump circuitry located on a die and coupled to external pump capacitors are disclosed. In one embodiment, an exemplary system may comprise a memory die containing a memory array and charge pump circuitry configured to generate a pump voltage supplied to the memory array, and one or more pump capacitors located external to the die and configured to hold stored charge that is used to generate the pump voltage. Some embodiments may include a tank capacitor, also located off-die, to condition the charge provided from the pump capacitor. According to further embodiments, the charge pump circuitry may include one or both of max current control circuitry and/or switch resistance control circuitry that may be utilized, for example, to adjust peak current.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: November 24, 2020
    Assignee: Micron Technology, Inc.
    Inventors: Arvind Muralidharan, Hari Giduturi
  • Patent number: 10848065
    Abstract: A power conversion device is configured with a plurality of power conversion units multiplexed in parallel each having a power converter for converting a power between a power source and a common load. At least one of the power conversion units is provided with an operation manager for managing the operation of the power converter. The operation manager changes the proportional gain of a voltage adjuster that performs a proportional control by inputting the steady-state offset between a target voltage and a voltage to the load, to determine, by comparing a change in the steady-state offset with a change in the proportional gain, whether the at least one power conversion unit is in a single operation in which the other power conversion units are in no operation.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: November 24, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yu Kawai, Takahiro Kato
  • Patent number: 10840340
    Abstract: In a MOS silicon carbide semiconductor device and a silicon carbide semiconductor circuit device equipped with the silicon carbide semiconductor device, a gate leak current that flows when negative voltage with respect to the potential of the source electrode is applied to the gate electrode is limited to less than 2×10?11 A. The negative voltage applied to the gate electrode is limited to ?3V or lower relative to the potential of the source electrode.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: November 17, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Keiji Okumura, Akimasa Kinoshita
  • Patent number: 10809285
    Abstract: A current detection circuit includes: a current detection unit configured to detect a potential difference between both ends of a first current detection resistor interposed between a control terminal and a drive circuit of a voltage-controlled semiconductor element including a current detection terminal; a voltage detection unit configured to detect a voltage at one of the both ends of the first current detection resistor; a voltage determination unit configured to determine whether or not a detection voltage of the voltage detection unit is not less than a threshold voltage; a voltage level adjustment unit configured to adjust a voltage level of a current detection voltage of the current detection terminal by a logical product signal of a current detection signal and a voltage determination signal; and an overcurrent detection unit configured to output an overcurrent detection signal when the adjusted current detection voltage is not less than a threshold voltage.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: October 20, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Masashi Akahane
  • Patent number: 10804729
    Abstract: A wireless power transmitter which is capable of charging a plurality of wireless power receivers is discussed. The wireless power transmitter includes a plurality of coil cells, a main half-bridge inverter to which a main pulse signal is applied, a plurality of sub half-bridge inverters to which a first sub pulse signal or a second sub pulse signal is applied, at least one current sensor configured to monitor a current, and a communications and control unit configured to control the pulse signals applied to the main half-bridge inverter and sub half-bridge inverters and communicate with the wireless power receivers.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: October 13, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yongcheol Park, Hyunbeom Lee, Jaesung Lee, Byungsang Jung, Jinmoo Park, Seonghun Lee, Jihyun Lee, Jeongkyo Seo
  • Patent number: 10797598
    Abstract: According to an aspect of one or more exemplary embodiments, there is provided a constant on-time controller for a buck converter with calibrated ripple injection in continuous conduction mode. The constant on-time controller may include a pulse width modulator (PWM) comparator that generates an on-time request, an error amplifier that regulates an average feedback voltage to an internal reference voltage, and passes a feedback node ripple signal to an input of the PWM comparator, an on-time generator that outputs an on-time signal that controls an on-time of the buck converter based on the on-time request, a MOSFET driver that drives the buck converter based on the output of the on-time generator, and an injection signal generator coupled to the on-time generator, wherein the injection signal generator may include a first switch and a second switch, a fixed signal generator, and a bias current source.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: October 6, 2020
    Assignee: Microchip Technology Incorporated
    Inventors: Venkata Murali Krushna Malla, Surya Prakash Rao Talari, Ioan Stoichita, Matthew Weng
  • Patent number: 10785044
    Abstract: Described are systems to manage the rate of energy delivery to computing devices. The computing devices may connect to a shared data and power distribution system. Techniques are described for distributing energy to the computing devices directly or via an energy and data delivery device using limits determined for the computing devices. Once the energy transfer to the computing devices is complete, the limits on the rate of energy delivery may be rescinded.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: September 22, 2020
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: David George Butler, Richard William Mincher, Arvind Thiagarajan
  • Patent number: 10770884
    Abstract: A power supply control apparatus that includes a switching circuit that turns ON or OFF a switch provided at a point along a wire, wherein power supply via the wire is controlled by switching with the switching circuit; a current output circuit configured to output a current whose current value increases as a current value of a current flowing through the wire increases; a resistance circuit through which the current that the current output circuit outputs flows, wherein the resistance circuit includes: a first resistor; and a series circuit of a second resistor and a capacitor that is connected in parallel to the first resistor; and a voltage applying circuit configured to, if an end-to-end voltage value across the resistance circuit becomes higher than or equal to a predetermined voltage value, apply a voltage whose value is higher than the predetermined voltage value.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: September 8, 2020
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shunichi Sawano, Yuuki Sugisawa
  • Patent number: 10770888
    Abstract: The overcurrent protection device includes: a current detection unit configured to detect, as a sense voltage, a sense current flowing through a current sense terminal of a voltage-controlled semiconductor device; an overcurrent detection unit configured to compare the sense voltage detected by the current detection unit with an overcurrent threshold value to output an overcurrent detection signal; a mode determination unit configured to determine whether a superposition mode in which a transient sense voltage is superimposed on the sense voltage or a normal mode in which the transient sense voltage is not superimposed on the sense voltage; and a timing adjustment unit configured to adjust a detection start timing of the overcurrent detection signal based on a result of determination by the mode determination unit.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: September 8, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Kei Minagawa
  • Patent number: 10757778
    Abstract: Systems and methods are provided for regulating a power conversion system. An example system controller includes: a detection component configured to receive an input voltage related to a diode connected to an inductor and output a first signal at a first logic level in response to the input voltage being larger than a predetermined threshold, a control logic component configured to receive the first signal, process information associated with the first signal, and output a modulation signal related to a modulation frequency in response to the first signal being at the first logic level, and a driving component configured to receive the modulation signal and output a drive signal to open and close a first switch at the modulation frequency.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: August 25, 2020
    Assignee: Guangzhou On-Bright Electronics Co., Ltd.
    Inventor: Lieyi Fang
  • Patent number: 10739393
    Abstract: A wearable device and a method are disclosed for determining induced voltage exposure of a human body to low voltage fluctuations or induced static electricity variation on human body. The wearable device includes conductive elements which form at least part of an antenna and comprises an RF-to-DC converter connected to the conductive elements of the wearable device for harvesting RF energy and induced static electricity variation at the input in the form of an AC voltage (Vin), while the RF-to-DC converter provides a DC voltage (Vout) at the output. The wearable device also comprises a control unit connected to the output of the RF-to-DC converter to determine the induced voltage exposure of a device wearer's body.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: August 11, 2020
    Assignee: Sanko Tekstil Isletmeleri San. Ve Tic. A.S.
    Inventors: Özgür Cobanoglu, Jitka Eryilmaz, Fehim Caglar, Ertug Erkus
  • Patent number: 10715039
    Abstract: A method for controlling a current mode switch mode power supply may include detecting a peak inductor current of a power inductor of the current mode switch mode power supply, estimating a load current based on a variable of a main control loop of the current mode switch mode power supply, detecting, within a main control loop of the current mode switch mode power supply, whether the load current is lower in magnitude than an estimated boundary condition current threshold, the estimated boundary condition current threshold defining a crossover threshold between operation of the current mode switch mode power supply in a continuous conduction mode and operation of the current mode switch mode power supply in a discontinuous conduction mode, and responsive to the load current being lower in magnitude than the estimated boundary condition current, causing pulse skipping of an output signal of the current mode switch mode power supply on an immediately subsequent switching cycle of the current mode switch mode p
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: July 14, 2020
    Assignee: Cirrus Logic, Inc.
    Inventors: Anand Ilango, Mikel Ash
  • Patent number: 10700595
    Abstract: A controller for extending a protection period of a power converter includes a delay circuit. The delay circuit is coupled to a supply voltage pin of the controller. When the power converter enters a protection mode, the delay circuit is enabled, receives a supply voltage through the supply voltage pin, and extends a protection period corresponding to the protection mode according to the supply voltage.
    Type: Grant
    Filed: June 9, 2019
    Date of Patent: June 30, 2020
    Assignee: Leadtrend Technology Corp.
    Inventors: Ming-Chang Tsou, Chih-Pu Yeh, Ru-Hung Lu
  • Patent number: 10673335
    Abstract: The present disclosure shows ways to use multiple “integrated voltage regulator (IVR) units” to offer IVRs that can cover a wide range of specifications without having to design separate IVRs for different specifications. Instead of designing separate IVRs and paying for separate mask sets for IVRs targeting different specifications (e.g., different design and mask sets for 1 A IVR, 5 A IVR), the disclosed embodiments present ways to design and fabricate large numbers of the same unit IVRs (e.g., 1 A IVR) and decide how many of them to use post-fabrication to deliver different current specifications (e.g., use five 1 A unit IVRs for 5 A, use ten 1 A unit IVRs for 10 A). These disclosed embodiments reduce the mask cost of fabricating IVRs for different specifications and reduce design time by focusing on a single unit IVR.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: June 2, 2020
    Assignee: Lion Semiconductor Inc.
    Inventors: Hanh-Phuc Le, John Crossley, Wonyoung Kim