Overvoltage And Undervoltage Patents (Class 361/90)
  • Patent number: 11165245
    Abstract: an overvoltage protector for protecting a device to be protected, having a first terminal and a second terminal. A number of strings are connected in parallel to one another between the first terminal and the second terminal, each string having a resistor, and at least one of the strings comprising a switching element that is connected in series to the resistor of the string. A circuit having an overvoltage protector, a use of an overvoltage protector, and a method for operating an overvoltage protector is also provided.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: November 2, 2021
    Assignee: Ellenberger & Poensgen GmbH
    Inventors: Dirk Boesche, Ernst-Dieter Wilkening
  • Patent number: 11128130
    Abstract: A protection circuit is provided. A control circuit receives an input voltage. In a case that the input voltage is lower than a negative threshold voltage, the control circuit outputs a first control voltage to a surge bleeder circuit through a first output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a first bleeder current. In a case that the input voltage is higher than a positive threshold voltage, the control circuit outputs a second control voltage to the surge bleeder circuit through a second output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a second bleeder current.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: September 21, 2021
    Assignee: Shanghai Awinic Technology Co., LTD
    Inventors: Xucheng Luo, Jiantao Cheng, Jianwei Hu, Chuankui Wu, Yongqiang He, Yan Jiang
  • Patent number: 11121547
    Abstract: The present disclosure provides a method and device for overvoltage protection. Specifically, the present disclosure provides an overvoltage protection device which provides a feedback loop for electronic components such as amplifiers and digital to analog converters which require feedback. The overvoltage protection device also includes overvoltage switches in both the signal and feedback channels, which may be opened by a fault detector in the event of an overvoltage. The device also includes an overvoltage feedback channel coupled between the signal and feedback channels, and which also includes a switch which may be closed in the event of an overvoltage event. As such, the overvoltage device provides a closed loop feedback channel during an overvoltage event.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: September 14, 2021
    Assignee: Analog Devices International Unlimited Company
    Inventors: Alan Kelly, David Aherne, Aidan J. Cahalane
  • Patent number: 11079443
    Abstract: Using various techniques, each transistor in a DC-DC converter can have a corresponding voltage detector that can compare a difference of a first voltage at a first terminal of the transistor and a second voltage at a second terminal of the transistor to a threshold voltage. Then, based on at least one comparison, a controller can detect an open circuit or a short circuit in one or more of the transistors regardless of the direction of the load current in the DC-DC converter.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: August 3, 2021
    Assignee: Analog Devices International Unlimited Company
    Inventors: Hai Chen, Gregory J. Hughes
  • Patent number: 11074186
    Abstract: A computer-implemented method according to one embodiment includes managing a cache in a tiered data storage system. The cache is configured to be powered by a temporary power source during a power loss event. The managing includes determining an amount of time that the temporary power source is capable of powering the cache before the temporary power source is depleted, and maintaining a dynamic cache size. The maintaining includes dynamically selecting the cache size based on the amount of time that the temporary power source is capable of powering the cache before the temporary power source is depleted, and based on a latency of destaging extents of data in the cache.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: July 27, 2021
    Assignee: International Business Machines Corporation
    Inventors: Ganesh Govindrao Chaudhari, Kushal Patel, Sachin Chandrakant Punadikar, Sarvesh S. Patel
  • Patent number: 11043826
    Abstract: Provided is a charge/discharge control circuit for controlling charging and discharging of a secondary cell. The charge/discharge control circuit includes a positive power supply terminal and a negative power supply terminal configured to monitor a voltage of the secondary cell, a charge control signal output terminal from which a charge control signal is output, the charge control signal controlling stopping and allowing charging of the secondary cell, a discharge control signal output terminal, an overcurrent detection terminal, an overcurrent cancel terminal, an external voltage input terminal provided separately from the overcurrent cancel terminal, a discharge overcurrent detection circuit connected to the overcurrent detection terminal, to which a discharge overcurrent detection voltage is set, and a discharge overcurrent cancel circuit connected to the overcurrent cancel terminal, to which a discharge overcurrent cancel voltage is set.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: June 22, 2021
    Assignee: ABLIC INC.
    Inventor: Fumihiko Maetani
  • Patent number: 10992125
    Abstract: A protective device comprises an input, an output, a first power switch, a second power switch and a drive unit. The first and second power switches are electrically connected in parallel with one another between the input and the output. The first power switch is configured to conduct a first forward current in a conducting state and to limit said first forward current in a current-limiting state. The second power switch is configured to conduct a second forward current in a conducting state and to interrupt said second forward current in an interrupting state. The second power switch comprises a lower on resistance than the first power switch. The switch arrangement is configured, for limiting the current flowing between the input and the output, to interrupt the second forward current with the second power switch and to limit the first forward current with the first power switch.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: April 27, 2021
    Assignee: Beckhoff Automation GmbH
    Inventors: Lars Walther, Mikko Saukoski
  • Patent number: 10958170
    Abstract: A computer program product and DC-to-DC converter comprising, an electronic switching device, an inductor coupled to the electronic switching device, a capacitor coupled to the inductor wherein the inductor and capacitor are chosen such that the resistance of the load line is greater than a gain minus the equivalent series resistance. A transient controller is communicatively coupled to the electronic switching device, wherein the transient controller has adaptive voltage positioning and wherein the transient controller sends a signal configured to initiate discharging the capacitor during a transient event.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: March 23, 2021
    Assignee: ALPHA AND OMEGA SEMICONDUCTOR (CAYMAN) LTD.
    Inventor: Amir Babazadeh
  • Patent number: 10931099
    Abstract: A disclosed under-voltage lockout (UVLO) circuit includes an automatic UVLO threshold configuration. The UVLO circuit may include an over-voltage protection circuit that receives power from a power source, a peak detector that detects a peak voltage output for the power source, a voltage threshold generator that sets a UVLO threshold based on the peak voltage output, and a comparator that compares an instantaneous voltage with the UVLO threshold and configures an operating mode of a device based on the comparison.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: February 23, 2021
    Assignee: CalAmp Corp.
    Inventors: Justin Flor, Russell Cook
  • Patent number: 10845075
    Abstract: A thermostat with voltage and current sensing capability is coupled directly to an HVAC unit and provides low latency failure detection and control using an on-board CPU. The thermostat can be configured to detect failure modes using current and voltage sensing and to make autonomous decisions to control the HVAC in response to such measurements.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: November 24, 2020
    Assignee: GridPoint, Inc.
    Inventors: Sam Taylor, Daniel K. Dyess
  • Patent number: 10845420
    Abstract: A voltage detecting apparatus includes: a voltage detecting unit configured to detect a voltage of a battery supplying power to a load; a discharge circuit configured to discharge the battery; a protection circuit disposed between the voltage detecting unit and the battery and between the discharge circuit and the battery; and a determination unit configured to estimate an internal resistance of the protection circuit on the basis of a first voltage detected by the voltage detecting unit when the discharge circuit is in a non-operating state and a second voltage detected by the voltage detecting unit when the discharge circuit is in an operating state and determine a half-cut state of the protection circuit on the basis of a result of the estimation.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: November 24, 2020
    Assignee: KEIHIN CORPORATION
    Inventor: Seiji Kamata
  • Patent number: 10839921
    Abstract: Embodiments of the present disclosure include an apparatus. The apparatus includes a flash memory with a device threshold voltage for an on/off state, a sense circuit, a decoupling capacitor, and a bleeder circuit. The sense circuit is configured to sense a voltage level of a voltage supply line. The bleeder circuit is configured to bleed a remaining charge available on the decoupling capacitor. The sense circuit is configured to determine a state of the flash memory based on the voltage level of the voltage supply line. The bleeder circuit is configured to bleed the decoupling capacitor in an off state and to preserve the remaining charge available in an on state.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: November 17, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Ajay Kumar, Yemi Omole
  • Patent number: 10784768
    Abstract: A conversion circuit includes a main device including a first terminal, a second terminal and a control terminal, and a voltage control switching circuit including a first terminal configured to receive an first driving signal, a second terminal coupled to the control terminal of the main device and configured to transmit a second driving signal to drive the main device, and a reference terminal coupled to the second terminal of the main device. A current passing through the voltage control switching device is controlled in response to a voltage level of the reference terminal.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: September 22, 2020
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Wei-Hsiang Chao, Po-Chin Chuang
  • Patent number: 10737586
    Abstract: Implementations described and claimed herein provide systems and methods for supplying voltage to a load and battery. In one implementation, an unregulated DC-to-DC converter is electrically connected to a first energy source to down convert a first voltage supplied by the first energy source. A load is electrically connected to the unregulated DC-to-DC converter to receive the down converted first voltage. A regulated DC-to-DC converter is electrically connected to the unregulated DC-to-DC converter to regulate the down converted first voltage to a second voltage. A second power source is electrically connected to the regulated DC-to-DC converter to charge the second power source using the second voltage, and the second power source is switchably connectable to the load.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: August 11, 2020
    Inventors: Jeffrey M. Alves, Peng Wu, Yehonatan Perez, Kisun Lee, Philip Juang
  • Patent number: 10705586
    Abstract: A power distribution apparatus with a backup energy-storing function receives a first input power source, and the apparatus includes an output module, a conversion module, an energy storage unit, and a management unit. When the first input power source is normal, the output module outputs the first input power source. Also, the management unit controls the conversion module to convert the first input power source to a first power source for charging the energy storage unit. When the first input power source is abnormal, the energy storage unit outputs a second power source to the conversion module. Also, the management unit controls the conversion module to convert the second power source into a second input power source for outputting the second input power source from a second output module.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: July 7, 2020
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chih-Chiang Chan, Wen-Hsiang Lin, Chin Lien
  • Patent number: 10693288
    Abstract: A protection circuit can include a first clamping sub-circuit, a first switching sub-circuit and a first resistive sub-circuit coupled in series between a first and second node. The protection circuit can also include a second clamping sub-circuit, a second switching sub-circuit and a second resistive sub-circuit coupled in series between the second and first nodes. The first and second clamping sub-circuits and the first and second resistive sub-circuits can be configured to bias a switching shunt sub-circuit. The switching shunt sub-circuit can be configured to short the first and second nodes together in response to a bias potential from the first and second clamping sub-circuits and the first and second resistive sub-circuits indicative of an over-voltage, Electrostatic Discharge (ESD) or similar event. The first and second switching sub-circuits can be configured to prevent the occurrence of a current path through the first and second resistive sub-circuits at the same time.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: June 23, 2020
    Assignee: Vishay Siliconix, LLC
    Inventors: Muhammed Ayman Shibib, Chungchi Gina Liao
  • Patent number: 10692581
    Abstract: Embodiments of the present disclosure include an apparatus. The apparatus includes a voltage supply line, a sense circuit coupled to the voltage supply line, and a bleeder circuit. The sense circuit is configured to sense a voltage level of the voltage supply line. The bleeder circuit is configured to bleed a remaining charge available on a capacitor when the voltage level reaches a device threshold voltage. The device threshold voltage arises from a device connected to the apparatus.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: June 23, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Ajay Kumar, Yemi Omole
  • Patent number: 10686366
    Abstract: A flyback power converter includes: a transformer, a primary side switch and a primary side controller circuit. The primary side controller circuit includes: a pulse modulation circuit and a protection control circuit. The pulse modulation circuit generates a pulse modulation signal. The protection control circuit is coupled to the pulse modulation circuit and compares an AC voltage related signal with an over voltage threshold. When the AC voltage related signal exceeds the over voltage threshold, the comparison circuit generates an over voltage protection trigger signal. When the pulse number of the over voltage protection trigger signal exceeds the over voltage counting threshold, the over voltage counter circuit triggers an over voltage protection signal, to indicate that an over voltage condition occurs, and a protection operation is performed.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: June 16, 2020
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventor: Kuang-Fu Chang
  • Patent number: 10651522
    Abstract: Disclosed is a hybrid electrochemical cell having two (or more) sub-cells each with different cell chemistry. For example, a second electrochemical sub-cell has a metal fuel electrode with the same type of metal fuel in a first electrochemical sub-cell, but has a different battery chemistry than the first sub-cell. A controller is configured to selectively generate an electrical current from at least one sub-cell in a discharge mode and selectively apply an electrical current to at least one sub cell in a charge mode, e.g., by controlling an open or closed state of switches. The operating modes may be controlled based on input parameters.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: May 12, 2020
    Assignee: NANTENERGY, INC.
    Inventors: Ramkumar Krishnan, Mark Naden, Jonathan Goldberg, Joel Hayes, Todd Trimble
  • Patent number: 10644495
    Abstract: One example includes a relay device that is comprised of a galvanic isolation barrier, a protection control and power extractor, and an electronic switch. The galvanic isolation barrier is coupled to an input of the relay device and receives a switch control signal and outputs another switch control signal. The protection control and power extractor is coupled to an output of the galvanic isolation barrier. The protection control and power extractor extracts power from a power supply coupled to the relay device. The protection control and power extractor is responsive to the other switch control signal and generates a protection signal in response to a determination of an operating parameter of the relay device. The protection control and power extractor further outputs an electronic switch device signal based on the generated protection signal.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: May 5, 2020
    Assignee: Texas Instruments Incorporated
    Inventors: Barry J. Male, Miroslav Oljaca, David W. Stout, Ajinder Singh
  • Patent number: 10620666
    Abstract: An interchangeable storage and charging compartments assembly provides a carrying case that contains a plurality of interchangeable compartments. The compartments are sized and dimensioned to retain a plurality of electronic devices and files that match the dimensions of the corresponding compartments. A foam resilient member retains the contents snugly in the compartments. Each compartment, and the corresponding item contained therein, are interchanged from inside the case to accommodate different electronic devices and files. A power supply member integrated in the case provides power independently to each compartment through individual cables. Thus, electronic devices can be powered and data can be transferred to and from electronic devices. A charging port in the sidewall of the case operatively connects power supply to an external power source for recharging. A lid that can be locked and unlocked over the case with a locking mechanism to protect the contents of the compartment cavity.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: April 14, 2020
    Inventor: Ryan R. Munn
  • Patent number: 10581906
    Abstract: One embodiment provides an electronic control unit (ECU) for a vehicle. The ECU includes transceiver circuitry, voltage measurement circuitry and feature set circuitry. The transceiver circuitry is to at least one of send and/or receive a message. The voltage measurement circuitry is to determine at least one of a high bus line voltage (VCANH) value and/or a low bus line voltage (VCANL) value, for each zero bit of at least one zero bit of a received message. The received the message includes a plurality of bits. The feature set circuitry is to determine a value of at least one feature of a feature set based, at least in part, on at least one of a high acknowledge (ACK) threshold voltage (VthH) and/or a low ACK threshold voltage (VthL). The feature set includes at least one of an operating most frequently measured VCANH value (VfreqH2) of a number of VCANH values and/or an operating most frequently measured VCANL value (VfreqL2) of a number of VCANL values.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: March 3, 2020
    Assignee: Intel Corporation
    Inventors: Kyong-Tak Cho, Li Zhao, Manoj R. Sastry
  • Patent number: 10500294
    Abstract: Devices, methods and systems of disinfecting medical instruments, more particularly blood glucose meters. A disinfection cradle including a flat base for positioning the cradle on a surface, the cradle having a receptacle configured to receive the diagnostic apparatus, and a UV source positioned in the receptacle that is configured to administer a disinfection cycle to the diagnostic apparatus by directing UV light outward at the diagnostic apparatus received in the receptacle, the UV light being able to act as a disinfecting agent to the disinfection cradle and diagnostic apparatus.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: December 10, 2019
    Assignee: Trividia Health, Inc.
    Inventors: Patrick J. Paul, Edward David Arguello, Brent E. Modzelewski
  • Patent number: 10476264
    Abstract: A power distribution system in operative association with a source and a plurality of loads includes a converter, a power distribution unit including a plurality of solid state power controllers and configured to provide power from converter to plurality of loads, and a fault protection unit operatively coupled to converter, power distribution unit, or both. The fault protection unit includes a sensor configured to sense current at output terminal of at least one of power distribution unit and converter and a controller configured to compare sensed current with a corresponding threshold value of current, identify presence of a fault in at least one of plurality of loads, power distribution unit, and converter based on comparison, and activate a desired protection scheme to provide fault ride through during the presence of the fault.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: November 12, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Pradeep Vijayan, Satish Prabhakaran, John Oliver Collins, Vishnu Mahadeva Iyer
  • Patent number: 10473727
    Abstract: Early power failure (EPF) detection circuit applies a rectified, unfiltered periodic waveform, at the frequency of the mains supply voltage to a threshold detector. During each cycle of the periodic waveform, the threshold detector produces a pulse voltage having a leading edge when the periodic waveform begins to exceed a threshold level associated with the threshold detector and a trailing edge when the periodic waveform ceases to exceed the threshold voltage. A microprocessor measures the length of the interval between the leading and trailing edges for indirectly measuring the magnitude (for example, RMS or peak) of the mains supply voltage. When the indirectly measured magnitude decreases below a minimum permissible, second threshold magnitude, a controlled power shutdown of the apparatus is initiated, such as by, for example, programs interrupt routine in the microprocessor.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: November 12, 2019
    Assignee: INTERDIGITAL CE PATENT HOLDINGS
    Inventors: William John Testin, Brian Albert Wittman
  • Patent number: 10466275
    Abstract: Apparatus and associated methods relate to a glitch detection circuit monitoring a duration that a selected fractional supply voltage is below a predetermined voltage threshold. The selected fractional supply voltage may be at the predetermined threshold when the supply voltage is between a valid circuit-supply voltage and a power-on circuit-reset (POR). A glitch detect signal may be generated, for example, when the monitored duration is greater than a predetermined duration threshold. A test glitch generator may generate a test glitch, for example, having selectable voltage and duration, which may be selectably applied to the glitch detection circuit to verify operation.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: November 5, 2019
    Assignee: XILINX, INC.
    Inventors: Sandeep Vundavalli, Sree RKC Saraswatula, James D. Wesselkamper, Santosh Yachareni, Shidong Zhou, Anil Kumar Kandala
  • Patent number: 10438423
    Abstract: An electronic unit for a vehicle communication interface, and a vehicle communication interface of that kind, are described. The electronic unit includes a switch matrix having at least one low-leakage-current switch that is designed to interrupt both communication devices simultaneously.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: October 8, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Herbert Reichardt, Christian Gern, Fabian Hokenmaier, Stefan Doehren
  • Patent number: 10418810
    Abstract: In the examples provided herein, an electrostatic discharge (ESD) recording circuit has a first memristive element coupled to a pin of an integrated circuit. The first memristive element switches from a first resistance to a second resistance when an ESD event occurs at the pin, and the first resistance is less than the second resistance. The ESD recording circuit also has shunting circuitry to shunt energy from an additional ESD event away from the first memristive element.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: September 17, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Brent Buchanan, Richard J. Auletta, Ning Ge
  • Patent number: 10352895
    Abstract: A system and method for testing and ejecting a test strip of a fluid testing medical device. The system includes parallel first and second guide rails defining a rail cavity between the guide rails. A sled includes a sled post and opposed first and second side leg sets each having at least one deflectable leg. Each of the deflectable legs is externally slidably engaged to one of the guide rails limiting the sled to only sliding motion in either a loading direction or an opposite ejection direction. An actuator arm is rotatably connected to a mechanism assembly. The sled post is received in an actuator arm slot. Actuator arm rotation in a loading rotational direction displaces the sled in the loading direction in a sliding motion. Subsequent opposite rotation of the actuator arm in an ejection rotational direction displaces the sled in the ejection direction and ejects the test strip.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: July 16, 2019
    Assignee: Roche Diabetes Care, Inc.
    Inventors: James R. Hanson, Derek C. Lotarski, Matthew C. Sauers, Anthony J. Uberta, III
  • Patent number: 10329032
    Abstract: A power management and distribution system, including a power feed line configured to supply electric power of a given power feed line voltage, a plurality of loads to be supplied with power from the power feed line, each of the loads requiring power of a characteristic load voltage, and a plurality of solid state power controllers (SSPCs) connected between the power feed line and the plurality of loads, each of the solid state power controllers configured to selectively connect a respective load of the plurality of loads to the power feed line or to disconnect the respective load of the plurality of loads from the power feed line.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: June 25, 2019
    Assignee: HS ELEKTRONIK SYSTEME GMBH
    Inventors: Alexander Michel, Jeff Wavering
  • Patent number: 10312680
    Abstract: Disclosed are advances in the arts with novel methods and apparatus for detecting faulty connections in an electrical system. Exemplary preferred embodiments include monitoring techniques and systems for monitoring signals at one or more device loads and analyzing the monitored signals for determining fault conditions at the device loads and/or at the main transmission lines. The invention preferably provides the capability to test and monitor electrical interconnections without fully activating the host system.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: June 4, 2019
    Assignee: TRIUNE SYSTEMS, LLC
    Inventors: Ross E. Teggatz, Wayne Chen, Brett Smith, James Kohout
  • Patent number: 10263440
    Abstract: In an electronic device, a monitoring circuit monitors a voltage change with regard to each of an RX2+ terminal and an RX2? terminal in a state where a charging device is connected to a Type-C connector. A determining circuit determines whether a short-circuit between a VBUS terminal and the RX2+ and RX2? terminals has occurred using the voltage change at each of the RX2+ terminal and the RX2? terminal.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: April 16, 2019
    Assignee: FUJITSU CONNECTED TECHNOLOGIES LIMITED
    Inventor: Manabu Ishida
  • Patent number: 10231296
    Abstract: A two-terminal IC chip and method thereof. For example, a two-terminal IC chip includes a first chip terminal, a second chip terminal, a first switch configured to receive a control signal, a first capacitor coupled to the first switch, a second switch configured to receive the control signal, a second capacitor coupled to the second switch, a third switch configured to receive the control signal, and a third capacitor coupled to the third switch. A first terminal voltage is a voltage of the first chip terminal, a second terminal voltage is a voltage of the second chip terminal, and a chip voltage is equal to a difference between the first terminal voltage and the second terminal voltage.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: March 12, 2019
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Qiang Luo, Liqiang Zhu, Zhiliang Chen, Lieyi Fang
  • Patent number: 10224679
    Abstract: An adapter module including an adapter and a power cord is provided. The adapter includes a first interface, at least a second interface coupled with at least a load, an identifying circuit having a sensing switch configured at the first interface, a controller, and a detecting circuit. The first interface is provided for inserting by a connector of the power cord. The sensing switch changes its on/off state depending on whether the first connector provides a trigger. A first message is generated if the first connector provides the trigger. The controller is coupled to the identifying circuit and receives the first message. The detecting circuit is coupled between the first interface and the second interface for detecting a power parameter value, and provides a second message to the controller. The controller sends a warning message according to the first message and the second message.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: March 5, 2019
    Assignee: CYBER POWER SYSTEMS, INC.
    Inventors: Yu-Jen Chen, Cheng-Yen Lo, Hsiung-Kuei Cheng
  • Patent number: 10186815
    Abstract: A USB Type-C interface chip having a CC pin. In an embodiment, the chip includes an internal unit coupled through a signal path to the CC pin; a high voltage detection unit coupled in the signal path, for detecting a voltage at the CC pin and comparing the detected voltage and a reference voltage; a high voltage protection unit for protecting, in response to the comparison result of the high voltage detection unit the internal unit from high voltage possibly present at the port of the chip.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: January 22, 2019
    Assignee: INTERNATIONAL GREEN CHIP (TIANJIN) CO., LTD.
    Inventors: Yu Shen, Xiaolong Chen
  • Patent number: 10181739
    Abstract: A power storage adapter may use a high efficiency charging method when supplying electrical power to a portable information handling system when the power storage adapter is not connected to AC line power. In particular, when the portable information handling system draws the electrical power below a low load threshold, such as during a low power state, the power storage adapter may avoid supplying electrical power. When an internal battery of the portable information handling system has an SOC less than a recharging state of charge for the internally battery, the power storage adapter may resume supplying power to the portable information handling system.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: January 15, 2019
    Assignee: Dell Products L.P.
    Inventors: Andrew Thomas Sultenfuss, Richard Christopher Thompson
  • Patent number: 10181716
    Abstract: A hot-swap protection circuit includes: a hot-swap circuit, a hot-swap detection circuit, and an N-well generation circuit, where the hot-swap detection circuit is configured to detect whether hot-swap is performed on the hot-swap circuit, and feed back a detection result to the N-well generation circuit; and the N-well generation circuit is configured to receive the detection result fed back by the hot-swap detection circuit, and output a control signal according to the detection result, to protect the hot-swap circuit. The hot-swap detection circuit is used to detect whether hot-swap is performed on the hot-swap circuit, and the detection result is fed back to the N-well generation circuit, so that the N-well generation circuit outputs a control signal according to the detection result fed back by the hot-swap detection circuit, to protect the hot-swap circuit, thereby preventing the hot-swap of the hot-swap circuit from burning a host or a peripheral device.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: January 15, 2019
    Assignee: CAPITAL MICROELECTRONICS CO., LTD.
    Inventor: Qinghua Xue
  • Patent number: 10164422
    Abstract: A method and system for protecting low voltage devices driven by a high voltage circuit is disclosed. The method comprises monitoring an output voltage, from a high voltage block, to a low voltage block. The method further comprises comparing the output voltage with a range of voltages allowable for driving the low voltage block. The range of voltages may be pre-defined or dynamically determined. Furthermore, the method comprises operating a first set of switches and a second set of switches. The first set of switches are operated to feed voltage from the high voltage block to input of the low voltage block, and the second set of switches are operated to feed a plurality of reference voltages to the input of the low voltage block.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: December 25, 2018
    Assignee: SIGNALCHIP INNOVATIONS PRIVATE LIMITED
    Inventors: Himamshu Gopalakrishna Khasnis, Nikhil Birur Gururaja Rao
  • Patent number: 10135439
    Abstract: Disclosed examples include isolated load switch driver circuits to drive a load, including an impedance circuit that receives a digital input voltage signal from a signal source, and selectively allows a current signal to flow from the signal source to charge a buffer capacitor. An impedance control circuit controls the impedance circuit to limit the current signal in response to the buffer capacitor reaching a first threshold voltage, and an output circuit provides an output isolated from the digital input voltage signal to switch the load. A signaling circuit selectively enables the output circuit to draw power from the buffer capacitor in response to the voltage of the buffer capacitor reaching the first threshold voltage.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: November 20, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Giacomo Calabrese, Maurizio Granato, Giovanni Frattini
  • Patent number: 10033205
    Abstract: For preventing overcurrent discharge, a protection method, a power supply apparatus, and an electronic device are disclosed. The power supply apparatus may include a power supply module and a protection circuit coupled to the power supply module and an electrical terminal. The protection circuit may include a controller that directs power from the power supply module to the electrical terminal, wherein the controller stops a current flow from the power supply module to the electrical terminal in response to a voltage detected by the controller being higher than a threshold voltage based on a temperature of the protection circuit.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: July 24, 2018
    Assignee: Lenovo (Beijing) Limited
    Inventor: Xianxi Li
  • Patent number: 10027124
    Abstract: A controller has a predicting section which computes a predicted electric energy predicted to be supplied from a power distribution grid to the load during an assessment period which is a predetermined period. The controller has a supply electric energy computing section which computes a supply electric power based on the predicted electric energy, the supply electric energy being an electric energy to be supplied to the load from the electric power converter during the assessment period. The controller has a time computing section which computes a discharge time by dividing the supply electric energy by a rated power of the electric power converter. The controller has a control section which controls the electric power converter so that an electric power corresponding to the rated power is supplied to the load only for the discharge time within the assessment period.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: July 17, 2018
    Assignee: DENSO CORPORATION
    Inventor: Akira Ito
  • Patent number: 9947496
    Abstract: An alternating current circuit breaker includes a first galvanic separation switch (SW2) and a bypass switch (SW1) in a live line, and a second galvanic separation switch (SW3) in a neutral line, and a semiconductor switch element connected parallel to the bypass switch (SW1). The semiconductor switch element includes a combination of a rectifier bridge (D1-D4) and an isolated gate bipolar transistor (IGBT). A processing unit is connected to a current measurement unit arranged in the live line, and is arranged to control the bypass switch (SW1), first and second galvanic separation switches (SW2, SW3) and the conducting state of the isolated gate bipolar transistor (IGBT) in case of detection of a short circuit condition.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: April 17, 2018
    Assignee: EATON INDUSTRIES (NETHERLANDS) B.V.
    Inventor: Ronaldus Niehoff
  • Patent number: 9900943
    Abstract: A two-terminal IC chip and method thereof. For example, a two-terminal IC chip includes a first chip terminal, a second chip terminal, a first switch configured to receive a control signal, a first capacitor coupled to the first switch, a second switch configured to receive the control signal, a second capacitor coupled to the second switch, a third switch configured to receive the control signal, and a third capacitor coupled to the third switch. A first terminal voltage is a voltage of the first chip terminal, a second terminal voltage is a voltage of the second chip terminal, and a chip voltage is equal to a difference between the first terminal voltage and the second terminal voltage.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: February 20, 2018
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Qiang Luo, Liqiang Zhu, Zhiliang Chen, Lieyi Fang
  • Patent number: 9881756
    Abstract: An exemplary contactor control system and method to reduce the amount of sound during the translation of an automotive contactor from a closed state to an open state is provided. The contactor has an electrical coil and first and second electrical contacts. The control system includes a microcontroller and a high side driver circuit. The microcontroller generates a pulse width modulated signal that is applied to the high side driver circuit and decreases a duty cycle thereof to decrease a first control voltage applied to the electrical coil over a time interval. The microcontroller maintains a duty cycle for another time interval to maintain the contactor in the closed operational state. Next, the microcontroller decreases the duty cycle to reduce a speed of a contactor armature prior to contacting a stop member to reduce an amount of sound while transitioning the contactor to the open state.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: January 30, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Pavel Dutov, Alexander J. Smith, Richard A. McCormick, Adam Ing
  • Patent number: 9847303
    Abstract: An electrostatic discharge protection chip is provided. The electrostatic discharge protection chip includes an electrostatic discharge module for discharging abnormal static electricity on the driver chip, and at least one detection module for detecting an equivalent resistor of the electrostatic discharge module in the driving circuit to determine whether the electrostatic discharge module is abnormal. The technical problems of the undetectable abnormal condition of the electrostatic discharge module, low functional efficiency, and high production cost are resolved.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: December 19, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xiaoyu Huang
  • Patent number: 9819259
    Abstract: In accordance with an embodiment, a method of operating a power system includes operating a power converter at a first output power, monitoring a first input voltage at an input port of the power converter. The method further includes upon detecting that the first input voltage drops below a first pre-determined voltage threshold, reducing the first output power of the power converter to a second output power lower than the first output power, and suspending operation of the power converter after the reducing the first output power of the power converter.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: November 14, 2017
    Assignee: INFINEON TECHNOLOGIES AUSTRIA AG
    Inventors: Ali Fawaz, Marcus Schaemann
  • Patent number: 9806636
    Abstract: A DC/AC converter apparatus comprising: input terminals to be connected to a DC power source; a DC/AC conversion unit configured to receive input DC electrical power via the input terminals and to convert the input DC electrical power into AC electrical power, the DC/AC conversion unit comprising two output terminals; two AC backup output terminals; a switch arrangement to selectively connect the two AC output terminals to the grid terminals and to the two AC backup output terminals; a control unit associated to the switch arrangement and configured to: drive the switches of the switch arrangement, sense when an AC voltage at the grid terminals is below a predetermined threshold; and automatically drive the switches of the switch arrangement to disconnect the two AC output terminals from the grid terminals and to connect the two AC output terminals to the two AC backup output terminals when the AC grid voltage is below a said predetermined threshold.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: October 31, 2017
    Assignee: ABB SCHWEIZ AG
    Inventors: Andrea Becattini, Sauro Macerini
  • Patent number: 9797292
    Abstract: This disclosure provides an ignition coil for a spark ignited internal combustion engine. The ignition coil includes a coil body having an outer surface and internal windings coupled to a connector. The ignition coil also includes a housing surrounding the coil body. The housing has an outer wall spaced apart from the outer surface of the coil body thereby forming a gap between the outer surface of the coil body and the outer wall. The outer wall includes an opening in flow communication with the gap.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: October 24, 2017
    Assignee: Cummins Inc.
    Inventor: Alan C. Anderson
  • Patent number: 9787212
    Abstract: Motor drive power conversion systems are provided including a rectifier and a switching inverter, wherein the switching devices of the rectifier, the inverter and/or of a DC/DC converter are silicon carbide switches, such as silicon carbide MOSFETs. Driver circuits are provided for providing bipolar gate drive signals to the silicon carbide MOSFETs, including providing negative gate-source voltage for controlling the off state of enhancement mode low side drivers and positive gate-source voltage for controlling the off state of enhancement mode high side drivers.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: October 10, 2017
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Kevin Baumann, Richard Lukaszewski, Rangarajan Tallam, Lixiang Wei, Lee Gettelfinger, Garron Morris, Bruce Weiss, Neil Gollhardt, Navid R. Zargari, William Brumsickle, Robert Wright Reese, Stephen E. Denning
  • Patent number: 9779781
    Abstract: Examples disclosed herein relate to dual in-line memory module (DIMM) battery backup. Some examples disclosed herein describe systems that include a backup power source pluggable into a DIMM slot. The backup power source may include a plurality of battery cells electrically connected to a DIMM to provide backup power to the DIMM. Each of the plurality of battery cells supporting the DIMM may be electrically connected to a DC-to-DC converter in series and to each other in parallel.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: October 3, 2017
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Hai Nguyen, Daniel Hsieh, Abhishek Banerjee