Voltage Regulator Protective Circuits Patents (Class 361/18)
  • Patent number: 10381822
    Abstract: A protection circuits for server racks may include an Oring circuit having a first MOSFET, a first diode, and first and second comparators. Each of the first and second comparators supports a maximum voltage difference that is less than an operational voltage of the power supply. The protection circuit also includes a clamping circuit having a second MOSFET and a second diode. Each of the first and second comparators is configured to compare voltage at the first MOSFET with voltage at the second MOSFET. The first comparator is configured to switch the first MOSFET to an off condition using the comparison, and the second comparator is configured to switch the first MOSFET to an on condition using the comparison. The second MOSFET is configured to clamp a node of each of the first and second comparators to below the maximum in the event of a short at the power supply.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: August 13, 2019
    Assignee: Google LLC
    Inventors: Liang Jia, Xin Li
  • Patent number: 10361693
    Abstract: A power source supply circuit includes: a plurality of power sources (11-1, 11-2) that generate power source voltages different from each other; a switch circuit (14) that switches and outputs the power source voltages generated in the plurality of power sources (11-1, 11-2); a voltage output terminal (16) that outputs outside the power source voltages output from the switch circuit (14); an RF choke circuit (15) provided between the switch circuit (14) and the voltage output terminal (16), the RF choke circuit (15) including a first capacitor; and a second capacitor (12-1, 12-2) provided between the plurality of power sources (11-1, 11-2) and the switch circuit (14), the second capacitor (12-1, 12-2) having a larger capacitance than the first capacitor.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: July 23, 2019
    Assignee: NEC CORPORATION
    Inventors: Yoji Murao, Kazumi Shiikuma
  • Patent number: 10354568
    Abstract: A display device includes a display panel including a plurality of pixels, a power supply transmitting driving power to the pixels via a power line and stopping transmission of the driving power in response to a crack signal, a panel driver provides a driving signal to the pixels, the driving signal for displaying a black image during a non-emission period of each frame period and displaying a valid image during an emission period of each frame period, and a crack detector senses a current flowing through the power line and conditionally generate the crack signal according to values of the current sensed over M successive frame periods, where M is an integer greater than 1.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: July 16, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Il-Hun Jeong, Woo-Seok Jang
  • Patent number: 10346072
    Abstract: Aspects of dislocated charge storage for power loss protection in non-volatile memory systems are described. A system includes a power supply having an output power stage with bulk capacitance to supply power for a period of time after a power supply failure. The system also includes a network storage interface device and a non-volatile memory media card both coupled to the power supply for power. The power supply is configured to generate a power loss alert in response to the power supply failure. In turn, the network storage interface device is configured to perform a power loss data protection procedure with the non-volatile memory media card based on the power loss alert and during the period of time that the bulk capacitance can supply power after the power supply failure. The additional capacitance typically needed for power loss protection features is located apart from the non-volatile memory media cards.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: July 9, 2019
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Phillip Peterson, Max Jesse Wishman, Christopher Nathan Watson
  • Patent number: 10345362
    Abstract: The present disclosure relates to the field of inverters, and to a method for detecting grid connection stability of an inverter and an inverter. The method includes: detecting a line voltage and a current of the alternating current port to obtain a first group of line voltage values and a first group of current values; detecting the line voltage and the current of the alternating current port to obtain a second group of line voltage values and a second group of current values; obtaining an equivalent impedance matrix of the power grid according to the first group of line voltage values, the first group of current values, the second group of line voltage values, and the second group of current values; and determining, by the inverter according to an equivalent admittance matrix and the equivalent impedance matrix, whether a stability requirement of the inverter is met.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: July 9, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Fangcheng Liu, Kai Xin
  • Patent number: 10332469
    Abstract: The present invention provides a GOA circuit over-current protection system and method thereof. The over-current protection system for a GOA circuit, which comprises a power management chip and a level-shift chip. The level-shift chip comprises an over-current protection module. The over-current protection module comprises a current comparator, an AND gate circuit, a rising edge pulse delay circuit, a power supply, a voltage comparator, a first switch and a second switch, and a capacitor. With the current comparator to detect a current on the wiring of the clock signal in the GOA circuit, when the current on the wiring of the clock signal in the GOA circuit is too high, the power supply is controlled for charging the capacitor.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: June 25, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Wenfang Li, Xianming Zhang
  • Patent number: 10333292
    Abstract: To provide a switching regulator equipped with an overheat protection circuit small in current consumption. A switching regulator of the present invention is configured to intermittently operate an overheat protection circuit only for a prescribed period based on a signal turning on a switching element, which is outputted from an output control circuit.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: June 25, 2019
    Assignee: ABLIC INC.
    Inventors: Akihiro Kawano, Katsuya Goto
  • Patent number: 10326444
    Abstract: An H-bridge pre-driver is configured as two blocks so as to suit the width of an H-bridge driver Tr. The two blocks are line-symmetrically placed with a bias circuit interposed therebetween. One of the pre-driver blocks is laid out as a rectangle that is long in one direction and is short in a direction perpendicular to that direction. With this configuration, the pre-driver layout area can be reduced, and the cost of IC can be reduced. Furthermore, the symmetric placement enables matching of the impedance of interconnect from the pre-driver to the driver and stabilization of properties to be achieved.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: June 18, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Isamu Moriya
  • Patent number: 10317986
    Abstract: A secondary side controller for a power converter configured to provide a control signal to an emitter element of an opto-coupler for control of a primary side controller of the power converter, the secondary side controller configured to operate with the primary side controller for controlling the voltage output of the power converter, the secondary side controller configured to, based on; a first control value configured to instruct the power converter to output its present voltage output; and a second control value configured to instruct the power converter to provide a requested target voltage output; provide said control signal in accordance with a transition profile over a predetermined transition time period to effect a change between the first control value and the second control value, the transition profile comprising at least a first rate of change in the control signal followed by an end time period leading to the end of the transition time period during which the rate of change in the control
    Type: Grant
    Filed: December 31, 2016
    Date of Patent: June 11, 2019
    Assignee: NXP B.V.
    Inventors: Robert Henri de Nie, Wilhelmus Hinderikus Maria Langeslag, Peter Laro
  • Patent number: 10319671
    Abstract: A semiconductor package includes a leadframe, a first transistor chip connected to a first island of the leadframe in a drain-down configuration, and a second transistor chip connected to a second island of the leadframe in the same drain-down configuration as the first transistor chip. The first and the second islands of the leadframe are mutually electrically isolated from one another. The first island includes an extension which extends beyond a perimeter of the first transistor chip in a direction towards the second island and overlaps the second transistor chip. The first transistor chip and the second transistor chip are electrically interconnected with one another via the extension of the first island and a first electric connection element electrically connecting the extension to the second transistor chip to form a half bridge circuit.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: June 11, 2019
    Assignee: Infineon Technologies AG
    Inventors: Dirk Ahlers, Gilles Delarozee, Daniel Schleisser, Christopher Spielman, Thomas Stoek
  • Patent number: 10312818
    Abstract: A power converter determines a feedback signal according to a voltage signal related to an output voltage of the power converter and a reference voltage, thereby regulating the output voltage. A control circuit and method for programming the output voltage of the power converter utilize an offset current generator to inject a current or sink a current for changing the voltage signal or the reference signal, thereby adjusting the output voltage. As a result, it gets rid of complicated circuitry but provides more steps adjustment, which reduces related costs.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: June 4, 2019
    Assignee: RICHTEK TECHNOLOGY CORP.
    Inventor: Isaac Y. Chen
  • Patent number: 10289091
    Abstract: The present disclosure relates to a parameterizable automation technology device. The parameterizable automation technology device includes a memory, a wireless communications interface, and a processor. The memory is configured to prestore a device parameter of the parameterizable automation technology device. The wireless communication interface is configured to receive update data to update the prestored device parameter via a communication network. The processor is configured to update the prestored device parameter based on the received update data and to adjust an operation of the parameterizable automation technology device based on the updated prestored device parameter.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: May 14, 2019
    Assignee: Phoenix Contact GmbH & Co. KG
    Inventors: Hartmut Henkel, Jochen Zeuch, Patrick Schweer
  • Patent number: 10284103
    Abstract: A power converter includes first and second DC terminals between which the power converter is operable to generate a voltage difference. The power converter also includes a control unit that is configured to operate in a normal mode during normal operation of the power converter and in a fault mode when a fault occurs in a respective DC power transmission medium that is operatively connected in use to one of the first or second DC terminals. The control unit in the normal mode generates a normal operating voltage difference between the first and second DC terminals. The control unit in the fault mode generates a modified operating voltage difference between the first and second DC terminals while maintaining the respective voltage potential with respect to earth of the other of the first and second DC terminals. The modified operating voltage difference is lower than the normal operating voltage difference.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: May 7, 2019
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventor: Carl David Barker
  • Patent number: 10277109
    Abstract: An inverter for a photovoltaic apparatus, said inverter comprising a DC electric bus having a plurality of electric lines forming corresponding DC input channels for said inverter. The inverter comprises a choke filter comprising a single magnetic circuit and a plurality of choke windings enchained with said magnetic circuit. Said choke windings are electrically connected in series with corresponding line conductors of said electric lines, which have a same voltage polarity. Said choke windings are arranged so that AC electric currents flowing along said choke windings generate magnetic fluxes having concordant directions. In a further aspect, the invention relates also to a choke filter for a DC electric bus of a photovoltaic apparatus.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: April 30, 2019
    Assignee: ABB Schweiz AG
    Inventors: Marco Borgogni, Sauro Macerini, Massimo Garufi
  • Patent number: 10259491
    Abstract: An electric power steering apparatus that drive-controls a motor by an inverter, and a motor release-switch is connected between the inverter and the motor, comprising: a control section to detect an assist state on a driving control system and to ON/OFF-switch a control of the inverter based on a detection result; a motor rotational number detecting section to detect a rotational number of the motor; an energy calculating section to calculate an energy of a motor back-EMF and a regenerative current based on the rotational number; and a judging section to compare the energy with an area of safety operation of the motor release-switch and to OFF-switch the d motor release-switch when the energy becomes within the area of safety operation. As occasion demands, the area of safety operation is calculated with the temperature.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: April 16, 2019
    Assignee: NSK LTD.
    Inventors: Naoto Shinkawa, Shigeru Fukinuki, Shin Kumagai, Shigeru Shimakawa, Teruyoshi Kogure
  • Patent number: 10256803
    Abstract: An electrical device includes an electrical load, an electronic switch with an electronic switching element and a driver controlling the electronic switching element, and at least one pulsed power supply having a power unit coupled with the electronic switching element and configured to generate an electrical supply current for the electrical load from a voltage based on alternately turning on and off the electronic switching element. During operation of the power supply, an electrical current associated with the electronic switching element flows through a current path. A pulse transformer has a primary side coupled with the power unit such that the electrical current flows through a primary-side winding. A comparator compares a secondary-side electrical voltage or a filtered secondary-side electrical voltage of the transformer, and an evaluation device coupled with the comparator detects potential defects of the electronic switch based on the result of the comparison.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: April 9, 2019
    Assignee: KUKA Deutschland GmbH
    Inventor: Sebastian Zehetbauer
  • Patent number: 10255215
    Abstract: Enhanced data storage devices in various form factors are discussed herein. In one example, a storage drive includes a plurality of storage devices configured to store and retrieve data responsive to operations received over Peripheral Component Interconnect Express (PCIe) interfaces, a PCIe switch circuit communicatively coupled to the PCIe interfaces of the storage devices and configured to receive over a host connector the operations issued by a host system and transfer the storage operations for ones of the storage devices over associated ones of the PCIe interfaces. The storage drive includes holdup circuitry configured to provide holdup power the storage devices. The storage drive includes a first circuit board assembly comprising three storage device connectors that couple to corresponding storage devices, and a second circuit board assembly comprising a further storage device connector that couples to a further storage device.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: April 9, 2019
    Assignee: Liqid Inc.
    Inventors: Jason Breakstone, Brenden Michael Rust, Christopher R. Long, Andrew Rudolph Heyd, Sumit Puri, Bryan Schramm, Seth Walsh
  • Patent number: 10243344
    Abstract: A semiconductor device includes an integration of a first external terminal to which a DC input voltage is input, a second external terminal to which a rectifying and smoothing circuit is externally connected, an output transistor connected between the first external terminal and the second external terminal, a control circuit arranged to turn on and off the output transistor so that a desired DC output voltage can be obtained from the rectifying and smoothing circuit, a current detection circuit arranged to generate a sense voltage corresponding to an on-current of the output transistor, and an overcurrent protection circuit arranged to monitor the sense voltage so as to perform an overcurrent protection operation.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: March 26, 2019
    Assignee: Rohm Co., Ltd.
    Inventor: Satoru Nate
  • Patent number: 10218129
    Abstract: An electronic device includes a first switch configured to connect a first configuration channel (CC) terminal of a Universal Serial Bus Type-C (USB-C) controller to a VCONN supply of the USB-C controller. The first CC terminal of the USB-C controller being is to directly connect to the first CC terminal of a USB-C receptacle. The electronic device includes a second switch configured to connect a second CC terminal of the USB-C controller to a control channel physical layer logic (PHY) of the USB-C controller. The second CC terminal is to directly connect to the second CC terminal of the USB-C receptacle. The electronic device includes an overvoltage detection and protection circuit configured to deactivate the first switch or the second switch when a voltage exceeding a predetermined threshold is detected. The first switch and the second switch are each coupled to the overvoltage detection and protection circuit.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: February 26, 2019
    Assignee: Cypress Semiconductor Corporation
    Inventors: Partha Mondal, Arun Khamesra, Hemant P. Vispute
  • Patent number: 10186952
    Abstract: A power conversion device in which a plurality of converter cells are connected in series with one another. The converter cells each include two or more semiconductor devices, an energy storage element and a bypass element including a constituent element for setting the bypass element to be close-circuited by detecting abnormality of a converter cell, and including a constituent element for controlling, among the semiconductor devices, a semiconductor device connected in parallel with the bypass element to set in a turn-on state, at the same time when the bypass element is set close-circuited or in advance of its close circuit.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: January 22, 2019
    Assignees: Mitsubishi Electric Corporation, TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventors: Takushi Jimichi, Kimiyuki Koyanagi, Sadao Funahashi, Taichiro Tsuchiya, Yasuhiro Shinomiya
  • Patent number: 10177596
    Abstract: Examples disclosed herein involve backup power management. In an example, an amount of backup power to power a load bank is estimated, a set of power sources are selected from a plurality of power sources based on respective states of charge of the plurality of power sources and the estimated amount of backup power, and the selected set of power sources are placed in circuit to provide backup power to the load bank via the selected set of power sources.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: January 8, 2019
    Assignee: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
    Inventors: Hai Ngoc Nguyen, Abhishek Banerjee
  • Patent number: 10128832
    Abstract: The present application discloses a converter system, a driving circuit and a driving method for a semiconductor switch. The driving circuit includes a driving unit, a sampling unit and a selection unit. A plurality of turn-off driving units with different turn-off parameters is provided in the driving unit, and a turn-off driving unit having a turn-off parameter adaptive to the working state of the semiconductor switch is selected according to the working state of the semiconductor switch so as to turn off the semiconductor switch.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: November 13, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Lizhi Xu, Weiyi Feng, Weiqiang Zhang, Hongyang Wu
  • Patent number: 10122164
    Abstract: A current path of a first transistor is connected in series to a communication line. When the electric current through the current path of the first transistor becomes equal to or greater than a set electric current, a current-limiting controller limits the electric current through the current path by controlling the first transistor to increase the resistance of the current path. When the end-to-end voltage of the current path of the first transistor becomes equal to or greater than a set voltage, a load limiter switches the first transistor off.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: November 6, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takuya Mukai, Yoshiaki Koizumi
  • Patent number: 10114047
    Abstract: Disclosed is a control line diagnostic apparatus for diagnosing a control line of a driver circuit in which a driven load is driven due to a current flowing through the control line from a first high-potential node to a first low-potential node when a driving switch having a higher potential than a potential of the driven load is turned on, the control line diagnostic apparatus including a first diagnostic line having an end connected to a first node provided on the control line and the other end connected to a second high-potential node, and including a first resistor, a second resistor, and a first diode connected to one another in series, a second diagnostic line having an end connected to the first node and the other end connected to a second low-potential node, and including a third resistor, a voltage measurement unit configured to measure a voltage of a second node provided between the first and second resistors, and a control unit configured to set predetermined operation modes by controlling the driv
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: October 30, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Woo-Jung Kim, Tae-Youn Kim
  • Patent number: 10108252
    Abstract: A voltage regulator for delivering power to a processor subsystem within an information handling system is disclosed. The voltage regulator includes an interface to an embedded controller for receiving a linear load line impedance and an intelligent load line controller. The intelligent load line controller may enable linear load line control, determine that a nonlinear load line condition is satisfied, and enable nonlinear load line control based on the determination that the nonlinear load line condition is satisfied.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: October 23, 2018
    Assignee: Dell Products L.P.
    Inventors: Kejiu Zhang, Shiguo Luo, Ralph H. Johnson, III, Hang Li
  • Patent number: 10082531
    Abstract: A rectifier diode failure detection apparatus for an electrical machine (10), the electrical machine (10) comprising an exciter armature winding (28a-c), a rotor main field winding (24) and first and second rectifiers (34a, 34b) arranged in parallel, each rectifier (34a, 34b) comprising at least first and second diodes (38a, 38b), each rectifier being configured to independently supply the rotor main field winding (24) with DC electrical current, the failure detection apparatus comprising: a controller (40) comprising at least two current sensors (42a, 42b), each current sensor (42a, 42b) being configured to measure output current (If1, If2) of a respective one of the rectifiers (34a, 34b), and the controller (40) being configured to determine a harmonic of the measured rectifier output currents; the controller (40) being further configured to determine a ratio of the magnitude of the first rectifier (34a) output current harmonic to the magnitude of the second rectifier (34b) output current harmonic, wherein
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: September 25, 2018
    Assignee: ROLLS-ROYCE plc
    Inventors: Vaiyapuri Viswanathan, Sivakumar Nadarajan, Amit K. Gupta
  • Patent number: 10084408
    Abstract: Disclosed are a vehicle motor drive circuit and a driving method thereof. In the vehicle motor drive circuit according to the present invention, when the floating voltage is generated on the digital ground line due to a short circuit or a poor contact, the switch control signal is connected to the motor ground power supply to lower the signal level of the switch control signal in response to the voltage difference produced between the digital ground line and the motor ground line. Therefore, it is possible to prevent an erroneous operation of the motor switch or the motor. Accordingly, it is possible to prevent a damage of the motor or the motor switch and a secondary problem caused by unintentional operation of the motor.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: September 25, 2018
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventor: Nack Jun Kim
  • Patent number: 10080278
    Abstract: Embodiments of the invention relate to electrostatic discharge (ESD) protection. One embodiment includes creating a window for multiple leads in a first plane on a cable. A common bus bar is attached adjacent to the window in a second plane on the cable. A first dissipative adhesive (DA) is applied across at least a portion of the multiple leads to connect the multiple leads to one another and to the common bus bar. At least some leads of the multiple leads are operatively connected to an element of an electronic device.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: September 18, 2018
    Assignee: International Business Machines Corporation
    Inventors: Robert G. Biskeborn, Myron H. Gentrup, Icko E. T. Iben, Ho-Yiu Lam
  • Patent number: 10075073
    Abstract: A DC/DC converter has: a soft-start circuit, a variable output current generator, a constant current source, an oscillator, a slope circuit, a PWM comparator, and a control circuit operable to turn ON and OFF first and second transistors alternately based on a pulse width modulation signal. Through the switching operation of the first and second transistors, an input voltage is converted into a output voltage.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: September 11, 2018
    Assignee: Rohm Co., Ltd.
    Inventors: Shidong Guan, Takatsugu Wachi, Yoshio Higashida, Takehiro Yoshida
  • Patent number: 10037066
    Abstract: A power supply unit (PSU) mismatch detection system that includes a plurality of PSU slots configured to couple to a PSU and transmit power to an auxiliary power rail (APR) and a main power rail (MPR), a controller that is coupled to the MPR and the PSU slots and configured to perform a PSU mismatch check on each PSU coupled to the PSU slots, and a programmable logic device (PLD) that is coupled to the APR, the MPR, and each of the plurality of PSU slots. The PLD enables transmission of power to the MPR from a first PSU coupled to a first PSU slot, receives an indication that the controller has completed the PSU mismatch check, determines valid PSU slots using the results of the PSU mismatch check, and enables the transmission of power to the main power rail from the valid PSUs slots.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: July 31, 2018
    Assignee: Dell Products L.P.
    Inventors: John Jenne, Craig Klein
  • Patent number: 10021842
    Abstract: Some embodiments provide irrigation controllers, comprising: a transformer configured to step down a voltage producing an AC power signal; a live AC line and an AC common line coupled with the transformer; a plurality of AC switches coupled with the live AC line and configured to selectively pass the AC power signal to one or more valve solenoids such that the one or more valve solenoids are effectively coupled across the live AC line and the AC common line; an impedance element coupled serially on the AC common line with the transformer, wherein the impedance element comprises an inductive reactance and a resistive component, and the impedance element is configured to increase overvoltage protection between the transformer and the plurality of AC switches increasing an effective voltage tolerance to the overvoltage conditions at the AC switches; and a controller configured to selectively control the plurality of AC switches.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 17, 2018
    Assignee: Rain Bird Corporation
    Inventors: Martin Castaneda Martinez, Angel Reyes Archundia
  • Patent number: 10020737
    Abstract: An example device in accordance with an aspect of the present disclosure includes a first converter to selectively convert a first input signal to a first output signal, and a second converter to selectively convert a second input signal to a second output signal. A controller is to control switches of the first and second converters based on the input signals and output signals, and based on operating the first and second converters exclusively with respect to each other such that a total of first and second duty cycles does not exceed one.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: July 10, 2018
    Assignee: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
    Inventors: Daniel Humphrey, Mohamed Amin Bemat
  • Patent number: 10008935
    Abstract: There is provided a DC-DC converter which is safe and secure, but yet with low power consumption. The DC-DC converter is configured to monitor the output voltage of an error amplifier, and detect that the output voltage of the error amplifier becomes a fixed value or smaller to drive an overheat protection circuit and a supply voltage monitoring circuit intermittently.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: June 26, 2018
    Assignee: ABLIC INC.
    Inventors: Akihiro Kawano, Katsuya Goto
  • Patent number: 10002008
    Abstract: A manual is disclosed for a frequency converter and a method, apparatus and a computer program product are disclosed for configuring a frequency converter. The manual can include a data storage storing operational configuration information of the frequency converter; wherein the configuration information is encoded to the data storage to be wirelessly readable from the data storage. The configuration information is obtained from the manual by wireless reading, and installed to the frequency converter by transmitting the obtained configuration information over a wireless connection.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: June 19, 2018
    Assignee: ABB Oy
    Inventors: Mika Juslin, Juha Martinmaa, Petri Kahelin
  • Patent number: 9996128
    Abstract: Systems and methods are provided for reliable redundant power distribution. Some embodiments include micro Automatic Transfer Switches (micro-ATSs), including various components and techniques for facilitating reliable auto-switching functionality in a small footprint (e.g., less than ten cubic inches, with at least one dimension being less than a standard NEMA rack height). Other embodiments include systems and techniques for integrating a number of micro-ATSs into a parallel auto-switching module for redundant power delivery to a number of devices. Implementations of the parallel auto-switching module are configured to be mounted in, on top of, or on the side of standard equipment racks. Still other embodiments provide power distribution topologies that exploit functionality of the micro-ATSs and/or the parallel micro-ATS modules.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: June 12, 2018
    Assignee: Zonit Structured Solutions, LLC
    Inventors: Steve Chapel, William Pachoud
  • Patent number: 9997902
    Abstract: An overcurrent protection circuit includes a voltage monitoring part configured to monitor an output voltage generated from a periodic switching operation of a switching output stage or a feedback voltage corresponding to the output voltage, a current monitoring part configured to monitor whether a current flowing through the switching output stage is under an overcurrent condition, and a protection operation part configured to perform an overcurrent protection operation in response to monitoring results of both the voltage monitoring part and the current monitoring part.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: June 12, 2018
    Assignee: Rohm Co., Ltd.
    Inventors: Shinji Kawata, Keita Itohara
  • Patent number: 9989573
    Abstract: In the present invention, the connection between an external power supply and a unit for detecting welding of a relay is disestablished at least when a short circuit is detected, thereby preventing the short circuit from being falsely detected in the event that the short circuit and the welding of the relay can both be detected. A device for detecting welding of a relay detects welding of a relay provided to a path via which a cell is charged by an external power supply. Welding of a power-supply-side relay or a ground-side relay is detected on the basis of a current flowing disproportionately more toward the external power supply than the power-supply-side relay or ground-side relay when a control unit has deactivated the power-supply-side relay or ground-side relay during an interrupting in charging. A disconnecting switch establishes or disestablishes the connection between the external power supply and a weld-detection switch.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: June 5, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kento Mochizuki, Shintaro Tazaki
  • Patent number: 9973022
    Abstract: A non-contact type power receiving apparatus, of which a voltage level of output power varies depending on a rated voltage of a battery, includes: a power receiving coil unit receiving a power in a non-contact scheme; a rectifying/multiplying unit rectifying the received power depending on controlling thereof and selectively multiplying a voltage level of the rectified power; and a controller selectively controlling a rectifying operation or a multiplying operation of the rectifying/multiplying unit to be performed depending on a selection signal.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: May 15, 2018
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang Ho Cho, Hyung Wook Cho, Sung Heum Park, Chang Mok Han, Jae Suk Sung, Jeong Man Han, Ki Won Chang
  • Patent number: 9956027
    Abstract: A device and method for detecting faults in a shield of an electrosurgical instrument is described. The device has a relay configured to selectively interrupt power to the electrosurgical instrument, monitoring circuitry configured to monitor a shield in the electrosurgical instrument, control circuitry to control the relay, and a battery power source. The monitoring circuitry has an envelope detector and an detected average shield current detector. The monitoring circuitry is configured to compare a shield current peak value to a shield current peak threshold value, and to compare an detected average shield current value to an detected average shield current threshold value. The device is further configured to operatively couple an active electrode of an electrosurgical instrument and a return electrode to an electrosurgical generator.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: May 1, 2018
    Assignee: ENCISION INC.
    Inventor: David Newton
  • Patent number: 9960592
    Abstract: A method for detecting a short circuit fault in a multi-level inverter circuit is provided. The multi-level inverter circuit includes a plurality of single phase branches each including of switches. The method includes steps outlined below. At least one detecting pulse sequence is transmitted to the switches of each of the single phase branches. Whether a conducting path is formed in any of the single phase branches is determined according to the detecting pulse sequence. When the conducting loop is formed, respective position of one or more malfunctioned switch in the single phase branches is located according to a path of the conducting loop. A short-circuit detection device and a three-phase three-level inverter circuit are also disclosed herein.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: May 1, 2018
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Liang Liu, Bo-Yu Pu, Yi Zhang, Hong-Jian Gan, Jian-Ping Ying
  • Patent number: 9948792
    Abstract: A system for enhancing tonal quality for ringback signals in a telecommunications network by adjusting audio processing during an alerting interval of a telecommunications session (e.g. during a telephone call). The system may be embodied in a telecommunications switching device and include a ringback manager process that provides the ability to adjust audio processing (e.g., by signaling to in-path equipment) which enhances the tonal quality of the ringback signal. As an example, a telephone system (e.g. equipment associated with establishment and operation of telephone communications sessions) can disable or attenuate operation of voice quality enhancement processing such as echo cancellation, noise reduction, adaptive level control, and the like, during the ringback or alerting interval or period of a telephone call so that the ringback tone provided to the calling party is not distorted by such processing.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: April 17, 2018
    Assignee: OnMobile Live, Inc.
    Inventor: R. Brough Turner
  • Patent number: 9941703
    Abstract: A solar power generation system having a backup inverter, the solar power generation system has N number of solar panels, N number of inverters, at least one backup inverter and at least one AC (Alternating Current) wiring box; each inverter and the backup inverter are parallel connected to the AC wiring box; the AC wiring box can be connected to a utility grid; when each inverter is normally operated, each solar panel can supply power to each inverter; when the X-th inverter is faulted, the X-th solar panel can supply power to the backup inverter, therefore reduce the interruption time of power generation.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: April 10, 2018
    Assignee: CYBER POWER SYSTEMS, INC.
    Inventors: Cheng-Wei Chu, Yu-Chih Lin
  • Patent number: 9941802
    Abstract: A primary-side controller comprises a feedback (FB) terminal coupled to a light-receiving element of a photocoupler so as to receive a feedback signal from the photocoupler, and a current detection (CS) terminal that receives a current detection signal that corresponds to a voltage drop across a sense resistor RS. The primary-side controller includes a current mode modulator that generates a control pulse based on the voltage at the FB terminal and the voltage at the CS terminal. The primary-side controller is configured to be switchable between a normal mode and a burst mode. When the electrical state of the DC/DC converter satisfies a predetermined condition, a burst mode adjustment circuit inhibits transition to the burst mode, or otherwise forces transition from the burst mode to the normal mode.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: April 10, 2018
    Assignee: ROHM CO., LTD.
    Inventors: Hiroki Kikuchi, Junichi Hagino
  • Patent number: 9941782
    Abstract: A switched-mode power supply system and method for converting an input voltage into an output voltage, including at least one switching stage controlled by a pulse-width modulation circuit in a clocked manner, and a control circuit that influences a pulse-width modulation circuit to vary the level of the output voltage, characterized by the provision of a current limiting circuit which, after a threshold voltage has been exceeded, limits the power supply output current first to an elevated maximum current for a first period of time, and thereafter to a regular maximum current. The control circuit is such that the first period of time for which the output current is limited to the elevated maximum current is dependent on the level of the output current.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: April 10, 2018
    Assignee: Weidmueller Interface GMBH & Co., KG
    Inventors: Klaus Schuermann, Michael Buschkamp
  • Patent number: 9930740
    Abstract: A control circuit of the present disclosure can directly coupled with AC power grid to control and adjust an LED lamp. The control circuit includes a protection unit, an anti-interference unit, an adjusting unit, an auxiliary control unit, a light emitting module, a low-flicker control unit, an ESD protection unit, an output unit and a plurality of IC unit. the adjusting unit adjusts and control a luminance of the light emitting module, the auxiliary control unit assistants to adjust the luminance of the light emitting module and increase a compatibility between the adjusting unit and the IC unit.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: March 27, 2018
    Assignee: CHAMP TECH OPTICAL (FOSHAN) CORPORATION
    Inventor: Chin-Che Hung
  • Patent number: 9921629
    Abstract: In accordance with embodiments of the present disclosure, an information handling system may include a processor and a power system comprising a plurality of voltage regulator phases, wherein at least one of the plurality of voltage regulator phases comprises an allocable voltage regulator phase that is configured to be selectively allocated to one of at least a first voltage rail and a second voltage rail of the information handling system based on a hardware configuration of the information handling system.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: March 20, 2018
    Assignee: Dell Products L.P.
    Inventors: Stuart Allen Berke, John J. Breen
  • Patent number: 9912270
    Abstract: A motor drive device includes: a drive circuit unit having a plurality pair of switching elements and a plurality pair of free wheel diodes connected in parallel to the plurality pair of switching elements respectively; and a controller that turns on/off the switching elements. The controller performs a synchronous rectification control in which at least one pair of the switching elements is complementarily turned on/off, or performs an asynchronous rectification control in which the synchronous rectification control is not performed. The controller has a variation restriction portion that restricts a variation in current that is caused by a switch from one of the synchronous rectification control and the asynchronous rectification control to the other.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: March 6, 2018
    Assignee: DENSO CORPORATION
    Inventors: Katsuhiko Hayashi, Takashi Suzuki
  • Patent number: 9906129
    Abstract: A power supply system includes a load, a power line, first and second DC power supplies, a power converter, and a controller for controlling the power converter. Upon selection of an operation mode in which the first and second DC power supplies are parallelly connected to the power line for providing the power line with an output from the first DC power supply after DC voltage conversion in the power converter and with an output from the second DC power supply without DC voltage conversion, the controller sets the maximum value of the total power output from the first and second DC power supplies to the power line at the sum of actual power of the first DC power supply and a charge limiting value for the second DC power supply.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: February 27, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Noritake Mitsutani
  • Patent number: 9887532
    Abstract: Devices and methods comprising a switch and an overload detection are disclosed. When an overload detection is detected, a first retry scheme followed by a second retry scheme different from the first retry scheme may be applied. If the overload condition persists, the switch may be disabled.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: February 6, 2018
    Assignee: Infineon Technologies AG
    Inventors: Christian Djelassi, Hans-Peter Kreuter, Robert Illing, Alexander Mayer, Luca Petruzzi, Bernhard Auer, Markus Ladurner, Alberto Zanardi
  • Patent number: 9871513
    Abstract: In activating a motor, a gate voltage with which a power semiconductor element may supply a rush current of the motor is generated by a charge pump circuit, when a certain time (time until the rush current ends) has elapsed after activating the motor, a timer circuit operates a gate clamp circuit, which reduces the gate voltage of the power semiconductor element to reduce the current-carrying capability of the power semiconductor element. Subsequently, when the motor has caused a short-circuit failure, the power semiconductor element, because its gate voltage is reduced by the gate clamp circuit in advance, supplies only a load short current corresponding to the reduced gate voltage. Accordingly, the heat generation due to the short-circuit current is also small and an increase in temperature is also suppressed.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: January 16, 2018
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Morio Iwamizu, Yasuki Yoshida