Current Driver Patents (Class 327/108)
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Patent number: 11688444Abstract: Various implementations described herein are directed to a device having first circuitry with wordline drivers coupled to wordlines. The device may have second circuitry with switch structures that are coupled between a first voltage and ground. The switch structures may be configured to provide a second voltage to a power connection of each wordline driver based on the first voltage.Type: GrantFiled: March 23, 2021Date of Patent: June 27, 2023Assignee: Arm LimitedInventors: Akash Bangalore Srinivasa, Andy Wangkun Chen, Yew Keong Chong, Sreebin Sreedhar, Balaji Ravikumar, Penaka Phani Goberu, Vibin Vincent
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Patent number: 11683804Abstract: A method of wireless communication, the method including: identifying a resource block assignment for a non-data uplink resource within a set of resource blocks; determining a first range of resource blocks below the resource block assignment for the non-data uplink resource and identifying a second range of resource blocks above the resource block assignment for the non-data uplink resource; calculating a first bandwidth associated with the first range of resource blocks and calculating a second bandwidth associated with the second range of resource blocks; and configuring a first wireless communication device to work within a discrete bandwidth level sufficient to encompass a larger one of the first bandwidth and the second bandwidth, wherein the discrete bandwidth level is less than a full uplink bandwidth assigned by a network serving the first wireless communication device.Type: GrantFiled: October 28, 2020Date of Patent: June 20, 2023Assignee: QUALCOMM IncorporatedInventor: Akash Kumar
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Patent number: 11671094Abstract: Driver circuits to invert an input signal and to generate an output signal based on the inverted input signal are presented. The voltage level of the logical high value of the output signal is adjustable. The driver circuit has a high side switching element coupled between a supply terminal and the output terminal of the driver circuit. The driver circuit has a low side switching element coupled between the output terminal of the driver circuit and a reference potential. The driver circuit has a regulation transistor, wherein a controlled section of the regulation transistor is coupled in series with the high side switching element and the low side switching element between the supply terminal and the reference potential. The driver circuit has a feedback circuit to regulate the output voltage by generating a regulation voltage at a control terminal of the regulation transistor.Type: GrantFiled: January 11, 2021Date of Patent: June 6, 2023Assignee: Dialog Semiconductor (UK) LimitedInventors: Suhas Vishwasrao Shinde, Stephan Drebinger, Marcus Weis
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Patent number: 11664730Abstract: A buck voltage converter is disclosed. The buck voltage generator includes a controller configured to generate one or more pulse width modulation (PWM) signals, and a plurality of serially connected switches configured to receive the PWM signals and to generate an output voltage signal at an output terminal based on the received PWM signals. The output voltage signal has an average voltage corresponding with a duty cycle of the PWM signals, a first switch of the plurality of serially connected switches has a first breakdown voltage and a second switch of the plurality of serially connected switches has a second breakdown voltage, and the first breakdown voltage is less than the second breakdown voltage.Type: GrantFiled: October 22, 2021Date of Patent: May 30, 2023Assignee: Empower Semiconductor, Inc.Inventor: Timothy Alan Phillips
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Patent number: 11658611Abstract: A local oscillator buffer circuit comprises a complementary common-source stage comprising a first p-channel transistor (MCSP) and a first n-channel transistor (MCSN), arranged such that their respective gate terminals are connected together at a first input node, and their respective drain terminals of each of is connected together at a buffer output node. A complementary source-follower stage comprises a second p-channel transistor (MSFP) and a second n-channel transistor (MSFN), arranged such that their respective gate terminals are connected together at a second input node, and their respective source terminals are connected together at the buffer output node.Type: GrantFiled: January 6, 2022Date of Patent: May 23, 2023Assignee: Nordic Semiconductor ASAInventors: Sami Karvonen, Pete Sivonen
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Patent number: 11658564Abstract: Example power factor correction circuits to correct the power factor of power converters are disclosed. An example power factor correction controller circuit includes a phase locked loop phase angle determiner to determine a first phase angle of an input voltage of the power converter and further includes a compensating current determiner to determine, based on the phase angle, a compensating current to compensate for a capacitive current introduced by at least one filter capacitor of the power converter. The power factor correction controller circuit further includes a switch controller to cause a controlled current drawn by a power stage of the power converter to be adjusted by the compensating current to reduce a phase offset between the first phase angle of the input voltage and a second phase angle of the an input current drawn at an input of the power converter.Type: GrantFiled: May 21, 2021Date of Patent: May 23, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventor: Manish Bhardwaj
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Patent number: 11657856Abstract: Systems, apparatuses, and methods for implementing a sampling circuit with increased headroom are disclosed. A sampling circuit includes at least a pair of input signal transistors connected via their drains to a cross-coupled pair of state nodes. The cross-coupled pair of state nodes are coupled to a tail transistor device via the sources of N-type transistors. When clock goes low, the circuit precharges the cross-coupled pair of state nodes while simultaneously attempting to amplify the difference between the pair of input signals. The amplification is performed by a pair of transistors in series between a source of each input signal transistor and ground. Each gate of the pair of transistors is connected to an inverted clock signal. When clock goes high, the circuit stops precharging and a voltage difference between the pair of input signals is regenerated to create a resulting differential voltage on the pair of state nodes.Type: GrantFiled: December 7, 2020Date of Patent: May 23, 2023Assignee: Advanced Micro Devices, Inc.Inventors: Milam Paraschou, Jeffrey Cooper
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Patent number: 11644494Abstract: Circuitry for driving a load, the circuitry comprising: driver circuitry; load sensing circuitry; and a parameter estimation engine, wherein the circuitry is operable in: a driving mode of operation in which the driver circuitry supplies a drive signal to a load coupled to the circuitry; and a load sensing mode of operation, for estimating a characteristic of a load coupled to the circuitry based on a signal output by the load sensing circuitry in response to a stimulus signal supplied to the driver circuitry, and wherein the circuitry is operable to perform a calibration operation in which the parameter estimation engine generates a circuit parameter for use in the load sensing mode based, at least in part, on a signal generated by the circuitry in response to a calibration stimulus signal supplied to the driver circuitry.Type: GrantFiled: March 9, 2022Date of Patent: May 9, 2023Assignee: Cirrus Logic, Inc.Inventors: Chandra B. Prakash, Tejasvi Das, Siddharth Maru
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Patent number: 11637551Abstract: A multiple operating-mode comparator system can be useful for high bandwidth and low power automated testing. The system can include a gain stage configured to drive a high impedance input of a comparator output stage, wherein the gain stage includes a differential switching stage coupled to an adjustable impedance circuit, and an impedance magnitude characteristic of the adjustable impedance circuit corresponds to a bandwidth characteristic of the gain stage. The comparator output stage can include a buffer circuit coupled to a low impedance comparator output node. The buffer circuit can provide a reference voltage for a switched output signal at the output node in a higher speed mode, and the buffer circuit can provide the switched output signal at the output node in a lower power mode.Type: GrantFiled: August 30, 2021Date of Patent: April 25, 2023Assignee: Analog Devices, Inc.Inventors: Christopher C. McQuilkin, Andrew Nathan Mort
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Patent number: 11638341Abstract: An isolated converter has a transformer with a primary winding (in a primary side circuit) and a secondary winding magnetically coupled to the primary winding. A first Y-capacitor is electrically connected between the primary side circuit and the secondary winding. The detection circuit is for detecting information at the primary side, preferably information about the input supply received at the input, and more preferably the information is that whether the input supply is an alternating current (AC) supply or a direct current (DC) supply, and the detection circuit includes the first Y-capacitor. The detection circuit enables the detected information to be provided directly to a secondary side controller, without needing opto-isolators or other isolated data transmission.Type: GrantFiled: March 30, 2020Date of Patent: April 25, 2023Assignee: SIGNIFY HOLDING B.V.Inventors: Ming Li, Bernd Clauberg, Yuhong Fang, Johannes Petrus Wernars, Liang Hong, Ashwin Premraj
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Patent number: 11631359Abstract: A display panel is provided. The display panel includes a display area comprising a gate line and a data line, and a gate driver connected to a terminal of the gate line. The gate driver includes a plurality of stages that are integrated on a substrate, and each stage comprises an inverter unit, an output unit, and a Q node stabilization unit. The output unit includes a first transistor and a first capacitor, wherein the first transistor includes an input terminal for receiving a clock signal, a control terminal connected to a node Q, and an output terminal connected to a gate voltage output terminal to output a gate voltage. A Vgs voltage of a transistor in the Q node stabilization unit has a value of equal to or less than 0 V when the output unit outputs a gate-on voltage.Type: GrantFiled: March 22, 2021Date of Patent: April 18, 2023Assignee: Samsung Display Co., Ltd.Inventors: Jung Hwan Hwang, Beom Jun Kim, Seong Yeol Syn, Bong-Jun Lee, You Mee Hyun
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Patent number: 11626826Abstract: A driver may comprise a first node, a second node, and processing circuitry. The first node is configured to receive a command from controller circuitry. The second node is configured to receive a commutation signal for activating or deactivating a switch. The processing circuitry is configured to determine, based on the received command, an activation setting for an activation characteristic for the switch and a deactivation setting for a deactivation characteristic for the switch and drive the switch based on the commutation signal. To drive the switch, the processing circuitry is configured to change, at a first time, the deactivation characteristic for the switch from a previous deactivation setting to the determined deactivation setting and change, at a second time that is different from the first time, the activation characteristic for the switch from a previous activation setting to the determined activation setting.Type: GrantFiled: October 25, 2021Date of Patent: April 11, 2023Assignee: Infineon Technologies AGInventors: Jens Barrenscheen, Michael Krug
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Patent number: 11626874Abstract: Systems, apparatuses, and methods for conveying and receiving information as electrical signals in a computing system are disclosed. A computing system includes multiple transmitters sending singled-ended data signals to multiple receivers. A termination voltage is generated and sent to the multiple receivers. The termination voltage is coupled to each of signal termination circuitry and signal sampling circuitry within each of the multiple receivers. Any change in the termination voltage affects the termination circuitry and affects comparisons performed by the sampling circuitry. Received signals are reconstructed at the receivers using the received signals, the signal termination circuitry and the signal sampling circuitry.Type: GrantFiled: October 15, 2021Date of Patent: April 11, 2023Assignee: Advanced Micro Devices, Inc.Inventors: Achal Kathuria, Pradeep Jayaraman
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Patent number: 11616443Abstract: A buck-boost converter including an inductor, a first transistor, a second transistor, a third transistor, a fourth transistor, a voltage detection circuit, and a voltage control circuit is provided. The first transistor is coupled to a first terminal of the inductor and receives a first control signal. The second transistor is coupled to the first terminal of the inductor and receives a second control signal. The third transistor is coupled to a second terminal of the inductor and receives a third control signal. The fourth transistor is coupled to the second terminal of the inductor and receives a fourth control signal voltage. The detection circuit detects the third control signal to selectively provide a voltage drop indication signal. When a voltage conversion mode is a buck mode, the voltage control circuit switches a conduction state of the third control signal in response to the voltage drop indication signal.Type: GrantFiled: September 13, 2021Date of Patent: March 28, 2023Assignee: PEGATRON CORPORATIONInventor: En-Kai Lien
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Patent number: 11616504Abstract: An amplifier overload power limit circuit, system, and a method thereof comprising a monitoring of a current gain of a BJT based on a current detector and limiting power to the BJT based on the monitored current gain to prevent the BJT from driven into a saturation mode and the amplifier overdrive.Type: GrantFiled: April 7, 2022Date of Patent: March 28, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Sudarshan Udayashankar, Martijn Fridus Snoeij
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Patent number: 11611332Abstract: A gate driver includes: an input pin for receiving switching control information from a controller; an output pin for driving a control terminal of a power transistor; a power supply pin for receiving power from an external supply; an input side electrically connected to the input pin; an output side electrically connected to the output pin and the power supply pin; and an isolation structure galvanically isolating the input side and the output side from one another. The output side is configured to transfer a fraction of the power received at the power supply pin to the input side over the isolation structure for powering the input side. The input side is configured to convey the switching control information received at the input pin to the output side over the isolation structure. A power electronic system that includes the gate driver is also described.Type: GrantFiled: December 3, 2021Date of Patent: March 21, 2023Assignee: Infineon Technologies Austria AGInventor: Heiko Rettinger
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Patent number: 11611338Abstract: Embodiments relate to circuit for reversing a threshold voltage shift of a transistor. The circuit includes a current mirror for sensing a transistor current and generating a mirrored current corresponding to the sensed transistor current, a gate biasing module for providing a gate bias to the transistor, and a calibration engine configured to receive the mirrored current from the current mirror and to control the gate biasing module in response to determining whether the mirrored current is outside of a predetermined range indicative of a shift in the threshold voltage of the transistor. The gate biasing module includes a gate biasing circuit configured to operate the transistor in a region where hot carrier injection (HCI) is present, and a gate switch for coupling the gate biasing circuit to a gate terminal of the transistor.Type: GrantFiled: August 11, 2021Date of Patent: March 21, 2023Assignee: Apple Inc.Inventors: Aly Ismail, Amr Haggag
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Patent number: 11611340Abstract: A drive circuit includes a second drive circuit that drives a semiconductor switching element in a case where a pulse width of a corresponding signal is determined to be larger than a second threshold, and a timing adjustment circuit that adjusts a timing at which the second drive circuit cooperates with a first drive circuit to drive the semiconductor switching element during a turn-off period of the semiconductor switching element due to drive of the first drive circuit.Type: GrantFiled: April 11, 2022Date of Patent: March 21, 2023Assignee: Mitsubishi Electric CorporationInventor: Naoki Ikeda
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Patent number: 11605962Abstract: A battery management system comprises a first and second battery cell controllers and a transmission line providing a point-to-point signal transmission path between the first and second battery cell controllers. At least one of the first and second battery cell controllers includes a logic circuit constructed and arranged for encoding data for transmission as a serial data stream along the signal transmission path in compliance with a multi-level encoding technique. The logic circuit comprises an encoding/decoding circuit that generates a modulated signal of the serial data stream over at least three discrete signal levels at a predetermined and fixed data pulse frequency for transmission through the transmission line and encodes a plurality of data units of the serial data stream into a data packet. The data packet includes at least three symbols constructed and arranged with at least four consecutive transmissions per symbol. Each transmission of each symbol assumes one of the three discrete signal levels.Type: GrantFiled: July 21, 2020Date of Patent: March 14, 2023Assignee: NXP USA, Inc.Inventors: Laurent Bordes, Simon Bertrand, Alexis Nathanael Huot-Marchand
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Patent number: 11606091Abstract: An input/output module electrically coupled between a control circuit and an input/output pin is provided. The input/output module includes a pre-driver and a post-driver. The pre-driver is electrically coupled to the control circuit, and the post-driver is electrically coupled between the pre-driver and the input/output pin. The pre-driver generates a pull-up selection signal and a pull-down selection signal according to an input signal and an enable signal generated by the control circuit. The post-driver sets a voltage level of the input/output pin according to the pull-up and pull-down selection signals. When the enable signal is at a first logic level, the input/output pin has a high impedance. When the enable signal is at a second logic level, the voltage level of the input/output pin changes with a logic level of the input signal, wherein the first logic level and the second logic level are inverted.Type: GrantFiled: August 11, 2021Date of Patent: March 14, 2023Assignee: FARADAY TECHNOLOGY CORPORATIONInventors: Chih-Hung Wu, Yu-Chieh Ma
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Patent number: 11601038Abstract: The present disclosure concerns a device including a first switch, a diode, and a passive resistive element electrically in series between conduction and control terminals of the first switch, a terminal of the diode located on the side of the first switch being coupled to a node of application of a potential variable with respect to the potential of said conduction terminal.Type: GrantFiled: December 11, 2020Date of Patent: March 7, 2023Assignee: Commissariat à l'Energie Atomique et aux Energies AlternativesInventors: Dominique Bergogne, Guillaume Regis
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Patent number: 11588485Abstract: A power domain change circuit includes an input circuit and an output circuit. The input circuit is suitable for operating in a first power domain and generating first and second intermediate processing signals. The output circuit is suitable for operating in a second power domain and generating a final output signal by averaging and combining transition jitter components of the first and second intermediate processing signals.Type: GrantFiled: May 17, 2021Date of Patent: February 21, 2023Assignee: SK hynix Inc.Inventor: Ji Hyo Kang
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Patent number: 11588473Abstract: A circuit with a metal-oxide semiconductor field-effect transistor and a diode module is applied to a power factor correction circuit, which can effectively reduce the heat generated by the whole system under heavy load. The circuit includes a metal-oxide semiconductor field-effect transistor and a diode module and a load determination unit. The diode module includes a plurality of diodes with a switch. The load determination unit can control the connection/disconnection of each diode in the diode module based on the magnitude of the load current. It can effectively reduce the current generated by each diode due to the load, thereby reducing the heat generation of the overall system. Moreover, due to the contact capacitance effect after the diodes are connected in parallel, the electromagnetic interference (EMI) characteristics of the power factor correction circuit of the system can be further optimized.Type: GrantFiled: November 23, 2021Date of Patent: February 21, 2023Assignee: POTENS SEMICONDUCTOR CORP.Inventors: Wen Nan Huang, Ching Kuo Chen, Chih Ming Yu, Hsiang Chi Meng
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Patent number: 11568776Abstract: A gate driver includes a plurality of active stages and a plurality of dummy stages. The active stage is configured to output a plurality of gate signals to a display region. The dummy stage is c connected to respective active stages and configured to output a plurality of dummy carry signals to the respective active stages. The active stage is configured to output the plurality of gate signals and a plurality of active carry signals. The plurality of dummy stages are configured to output the plurality of dummy carry signals, respectively, and not to output any gate signal.Type: GrantFiled: January 7, 2021Date of Patent: January 31, 2023Inventor: Junghwan Hwang
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Patent number: 11563434Abstract: A driver circuit comprising a differential operational amplifier configured to receive an input voltage and produce a differential output voltage based at least in part on the input voltage. The differential output voltage can be produced for a receiver circuit that is communicatively coupled to the driver circuit.Type: GrantFiled: September 11, 2020Date of Patent: January 24, 2023Assignee: Raytheon CompanyInventors: Paul Baker, Alvaro Flores
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Patent number: 11543850Abstract: An apparatus and system for a clock buffer. The clock buffer comprises a source follower, and the source follower comprises a voltage source and a resistor.Type: GrantFiled: January 31, 2020Date of Patent: January 3, 2023Assignee: Acacia Communications, Inc.Inventors: Ian Dedic, Gavin Allen, David Enright, Bo Yang, Tarun Gupta
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Patent number: 11543846Abstract: A driver circuit includes three sub-circuits. A first sub-circuit is configured to generate a drive current output by the driver circuit through an output node during first and second regions of operation and includes: a diode coupled to the output node and a first transistor, and a second transistor coupled to the first transistor and a current mirror. A second sub-circuit is configured to generate the drive current during the first and second and a third region of operation and includes: a third transistor coupled to the output node; and a fourth transistor. A third sub-circuit is configured to generate the drive current during the third region of operation and includes: a current source coupled to the current mirror and a buffer; and a fifth transistor coupled to the third transistor and the fourth transistor and configured to receive an output of the buffer.Type: GrantFiled: September 8, 2021Date of Patent: January 3, 2023Assignee: Texas Instruments IncorporatedInventor: Krishnamurthy Ganapathi Shankar
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Patent number: 11539366Abstract: A capacitive transmitter includes a control circuit configured to generate a data signal by delaying input data and to generate a control signal according to the input data and a delayed signal thereof; a capacitor connected between a first node and a transmission node; a driving circuit configured to receive the data signal and to provide an output signal corresponding to the data signal to the first node; and a bias setting circuit configured to set a transmission voltage at the transmission node according to the control signal.Type: GrantFiled: November 23, 2021Date of Patent: December 27, 2022Assignees: SK hynix Inc., Seoul National University R&DB FoundationInventors: Sangyoon Lee, Jaekwang Yun, Suhwan Kim
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Patent number: 11538394Abstract: A gate driver circuit, a display device and a driving method. The gate driver circuit includes: a scan signal generation circuit, wherein the scan signal generation circuit includes N1 stages of first output terminals, and the scan signal generation circuit is configured to output N1 first pulse scan signals stage by stage respectively through the N1 stages of first output terminals; and N2 level conversion circuits, wherein the N2 level conversion circuits are configured to output under a control of a plurality of conversion control signals N1 second pulse scan signals which are in one-to-one correspondence with the N1 first pulse scan signals, and the plurality of conversion control signals include a plurality of first sub-control signals which are the N1 first pulse scan signals, wherein N1 is an integer greater than or equal to 2, and N2 is an integer greater than or equal to 2.Type: GrantFiled: November 6, 2018Date of Patent: December 27, 2022Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Yifeng Zou, Hui Wang, Rongcheng Liu, Xiong Xiong
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Patent number: 11538417Abstract: Embodiments of the present disclosure provide a light emission control shift register and method thereof, a gate driving circuit, and a display device. An input circuit outputs a signal of a signal input terminal to a first node. A first control circuit outputs a voltage of a first voltage terminal to a second node. A second control circuit transmits the voltage of the first voltage terminal to a third node. A third control circuit transmits the voltage of the first voltage terminal to a fourth node, and the third control circuit can further transmit the voltage of the second voltage terminal to the fourth node. A fourth control circuit transmits the voltage of the first voltage terminal to a signal output terminal, and the fourth control circuit can further transmit the voltage of the second voltage terminal to the signal output terminal.Type: GrantFiled: October 27, 2021Date of Patent: December 27, 2022Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Bo Yang, Chengchung Yang, Xiangfei He, Ling Shi
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Patent number: 11515885Abstract: Methods and systems are described for generating a process-voltage-temperature (PVT)-dependent reference voltage at a reference branch circuit based on a reference current obtained via a band gap generator and a common mode voltage input, generating a PVT-dependent output voltage at an output of a static analog calibration circuit responsive to the common mode voltage input and an adjustable current, adjusting the adjustable current through the static analog calibration circuit according to a control signal generated responsive to comparisons of the PVT-dependent output voltage to the PVT-dependent reference voltage, and configuring a clocked data sampler with a PVT-calibrated current by providing the control signal to the clocked data sampler.Type: GrantFiled: June 15, 2021Date of Patent: November 29, 2022Assignee: KANDOU LABS, S.A.Inventors: Kiarash Gharibdoust, Armin Tajalli, Pavan Kumar Jampani, Ali Hormati
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Patent number: 11502685Abstract: A gate drive circuit in a switching circuit including a switching terminal connected to a node that is connected to a high-side transistor and a low-side transistor, and connected to an end of a boot-strap capacitor, a bootstrap terminal connected to another end of the bootstrap capacitor, a high-side driver having an output terminal connected to a gate of the high-side transistor, an upper power supply node connected to the bootstrap terminal, and a lower power supply node connected to the switching terminal, a low-side driver having an output terminal connected to a gate of the low-side transistor, a rectifying device for applying a constant voltage to the bootstrap terminal, and a dead time controller for controlling a length of a dead time during which the high-side transistor and the low-side transistor are simultaneously turned off, based on a potential difference between the bootstrap terminal and the switching terminal.Type: GrantFiled: December 2, 2020Date of Patent: November 15, 2022Assignee: ROHM CO., LTD.Inventors: Shinya Karasawa, Hiroki Niikura
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Patent number: 11502635Abstract: The control system comprises an amplifier (264; 266) designed to receive an input control signal (cmd*; cmd*), in order to amplify the input control signal (cmd*; cmd*) so as to obtain an output control signal (CMD*; CMD*) and to apply the output control signal (CMD*; CMD*) to the switch (222; 224) in order to either open or close the switch (222; 224), the amplifier (264; 266) having two, positive and negative, supply terminals intended to receive a supply voltage. It moreover comprises an inhibiting device (310; 314) for the amplifier (264; 266) designed to lower the supply voltage on receiving what is referred to as a total inhibit control (INHIB_T) so that the output control signal (CMD*; CMD*) keeps the switch (222; 224) open irrespective of the input control signal (cmd*; cmd*).Type: GrantFiled: May 28, 2019Date of Patent: November 15, 2022Assignee: Valeo Equipements Electriques MoteurInventor: Romuald Morvany
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Patent number: 11482996Abstract: A circuit device includes an output terminal, an output transistor, and a gate voltage control circuit. The output transistor is provided between a first power supply node and the output terminal. The gate voltage control circuit changes a gate voltage of the output transistor at a first temporal voltage change rate after an input signal changes from a first logic level to a second logic level, changes the gate voltage at a second temporal voltage change rate smaller than the first temporal voltage change rate after the gate voltage reaches a first determination voltage, and changes the gate voltage at a third temporal voltage change rate greater than the second temporal voltage change rate after the gate voltage reaches a second determination voltage.Type: GrantFiled: August 3, 2021Date of Patent: October 25, 2022Assignee: SEIKO EPSON CORPORATIONInventors: Yoshifumi Sakamoto, Motoaki Nishimura
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Patent number: 11482918Abstract: A gate drive circuit, which drives a gate of a first transistor, includes a first switch on a high potential side and a second switch on a low potential side connected in series at a second connection node between a high potential end and a low potential end of a series connection structure, constituted of a first voltage source and a second voltage source connected in series at a first connection node; and a third switch and an inductor connected in series between the first connection node and the second connection node. The gate of the first transistor can be electrically connected to the second connection node.Type: GrantFiled: November 16, 2018Date of Patent: October 25, 2022Assignee: Rohm Co., Ltd.Inventors: Yuta Okawauchi, Yusuke Nakakohara, Ken Nakahara
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Patent number: 11476880Abstract: A radio frequency module includes a filter that is arranged on a first path connecting a common terminal and a first input/output terminal and has a first frequency band as a pass band, another filter that is arranged on a second path connecting the common terminal and a second input/output terminal and has a second frequency band different from the first frequency band as a pass band, and a detection circuit connected to the first path and configured to detect a leakage signal in the second frequency band leaked to the first path and output a signal indicating a detection result.Type: GrantFiled: October 1, 2020Date of Patent: October 18, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Michiyo Yamamoto
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Patent number: 11475844Abstract: A display substrate includes a scanning driving circuit arranged on a base substrate. The scanning driving circuit includes a plurality of shift register units and a first voltage signal line extending in a first direction. At least one shift register unit includes an output capacitor and a first transistor, a first electrode thereof is coupled to the first voltage signal line, and a second electrode thereof is coupled to an electrode plate of the output capacitor. A maximum distance between an orthogonal projection of the first electrode/second electrode of the first transistor onto the base substrate and an orthogonal projection of the first voltage signal line/the electrode plate of the output capacitor onto the base substrate is smaller than a first/second predetermined distance in a second direction, and the first direction intersects the second direction.Type: GrantFiled: March 16, 2020Date of Patent: October 18, 2022Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., Beijing BOE Technology Development Co., Ltd.Inventors: Jie Dai, Pengfei Yu, Huijuan Yang, Lu Bai, Huijun Li, Xiaofeng Jiang
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Patent number: 11467611Abstract: A power transistor generates an output current and a sense transistor generates a proportional sense current. A differential amplifier generates a gate voltage applied to the power and sense transistors in response to first and second input signals. A comparator circuit compares the gate voltage to a switching reference to detect whether the power and sense transistors are operating in a triode mode of operation or in a saturation mode of operation. At least one of the first and second input signals is modified in response to the detection made by the comparator circuit. In one instance, different reference voltages are applied to an input of the amplifier depending on the detected mode of operation. In another instance, different resistances are used to convert the sense current to a voltage for application to an input of the amplifier in response to the detected mode of operation.Type: GrantFiled: July 11, 2019Date of Patent: October 11, 2022Assignee: STMicroelectronics S.r.l.Inventor: Marco Martini
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Patent number: 11469750Abstract: Provided is a switching apparatus and a determination apparatus connected to the switching apparatus. The switching apparatus comprises: a first switching device and a second switching device, wherein each first main terminal is connected to a first reference potential; an opposing switching device, wherein a second main terminal is connected to a second reference potential; an output wiring section; a first detector for detecting a first detection value changing in accordance with current flowing in the first switching device; and a second detector for detecting a second detection value changing in accordance with current flowing in the second switching device.Type: GrantFiled: July 27, 2021Date of Patent: October 11, 2022Assignee: FUJI ELECTRIC CO., LTD.Inventor: Tadahiko Sato
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Patent number: 11463082Abstract: A gate-driving circuit for turning on and off a switch device having a gate terminal, a drain terminal, and a source terminal coupled to a reference node is provided. The gate-driving circuit includes a controller and a waveform conversion circuit. The controller includes a first switch supplying a high voltage level to a first node, a second switch coupling the first node to a low voltage level of the reference node, and a third switch coupling a second node to the low voltage level. The second node is coupled to the gate terminal. When the first switch is turned on for the first time during startup, the third switch is turned on simultaneously. The waveform conversion circuit includes a first resistor coupled between the first node and the second node and a first capacitor coupled between the first node and the second node.Type: GrantFiled: January 13, 2021Date of Patent: October 4, 2022Assignee: DELTA ELECTRONICS, INC.Inventor: Po-Chin Chuang
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Patent number: 11456745Abstract: An apparatus comprising a first voltage domain circuit including a first circuit component configured to provide a first digital output signal; a second voltage domain circuit comprising a second circuit component; a level shifter arrangement configured to receive the first digital output signal and generate a second digital output signal based thereon with an increased voltage level of the high state, and provide said second digital output signal to the second circuit component; wherein the level shifter arrangement comprises at least one stage, the at least one stage comprising an arrangement of one or more diode-connected PMOS transistors, coupled to a CMOS inverter arrangement; the CMOS inverter arrangement of a first of the at least one stages configured to receive the first digital output signal and the CMOS inverter arrangement of a final stage of the at least one stages configured to output said second digital output signal.Type: GrantFiled: September 22, 2020Date of Patent: September 27, 2022Assignee: NXP B.V.Inventors: Klaas-Jan de Langen, Antonius Martinus Jacobus Daanen, Frederik van den Ende
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Patent number: 11450257Abstract: An electroluminescence display apparatus includes a display panel including a display area including a plurality of pixel lines and a non-display area including a gate driving circuit supplying a gate signal to the plurality of pixel lines, and each of the plurality of pixel lines includes a plurality of pixels, each of the plurality of pixels includes a pixel driving circuit and a light emitting device, each of the pixel driving circuit and the gate driving circuit is implemented with a p-type transistor and an n-type transistor, and the gate driving circuit supplies a gate signal to the n-type transistor of the pixel driving circuit, so that a stably output can be provided, and the non-display area of the display panel can be reduced.Type: GrantFiled: August 27, 2021Date of Patent: September 20, 2022Assignee: LG DISPLAY CO., LTD.Inventors: Yong Seok Park, Sung Jin Lee, Jae Yong You
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Patent number: 11451197Abstract: An output stage circuit comprising a bias voltage generator, a first amplifier circuit and a second amplifier circuit is provided. The bias voltage generator is coupled to an output terminal of the output stage circuit to generate a bias voltage according to an output voltage of the output terminal. The first amplifier circuit is coupled to the output terminal, a first power supply terminal and the bias voltage generator, receives a first pre-driving signal, a first predetermined voltage and the bias voltage, and determines whether to transmit a first voltage to serve as the output voltage. The second amplifier circuit is coupled to the output terminal, a second power supply terminal and the bias voltage generator, receives a second pre-driving signal, a second predetermined voltage and the bias voltage, and determines whether to transmit a second voltage to serve as the output voltage.Type: GrantFiled: August 6, 2020Date of Patent: September 20, 2022Assignee: Shanghai Zhaoxin Semiconductor Co., Ltd.Inventors: Shen Li, Zhongding Liu
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Patent number: 11451225Abstract: This publication describes apparatuses and methods for driving a switching device and providing for the fast start-up of the switching device. In an aspect, the apparatus includes a driver circuit and a starter circuit. The driver circuit for applying control signals to a control terminal of the switching device when activated. The switching device is activatable to drive a load in an operating mode when a control signal above a threshold voltage is applied to the control terminal. The starter circuit is coupled to the control terminal and includes an energy store and a switch operable to discharge the energy store to deliver a start-up voltage above the threshold to the control terminal. As such, the switching device can be activated during a delay period before the driver circuit can generate a control signal above the threshold voltage after being activated.Type: GrantFiled: February 8, 2021Date of Patent: September 20, 2022Assignee: Aptiv Technologies LimitedInventors: Emmanuel Boudoux, Markus Heinrich
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Patent number: 11435389Abstract: Embodiments of this application relate to the technical field of electronics, and disclose an electrical control device detection circuit, a detection method, and an electric vehicle. In some embodiments of this application, the detection circuit is configured to detect a drive circuit of the electrical control device. The drive circuit includes a high-side switch unit. The detection circuit includes a first detection module and a control module. A first end of the first detection module is connected to a first end of the electrical control device. A second end of the first detection module is connected to a second end of the electrical control device. A third end of the first detection module is connected to the control module.Type: GrantFiled: September 30, 2021Date of Patent: September 6, 2022Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventors: Yanhui Fu, Baohai Du, Guoxiu Wu
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Patent number: 11437991Abstract: A control circuit for a main switch is provided. The control circuit includes an output voltage tracker, a main switch bias generator, and a reference current device. The output voltage tracker is coupled to the main output end and generates a first tracking voltage positively correlated to an output voltage. The main switch bias generator, in response to the first tracking voltage, generates a second tracking voltage substantially equal to the output voltage. The reference current device is coupled to the main switch bias generator and is used to generate a control voltage on a main control end. The reference current device is used to limit the maximum value of the output current. The main switch and a duplicating switching element of the main switch bias generator form a current mirror configuration circuit. The consuming current of the output voltage tracker is positively correlated to the output current.Type: GrantFiled: May 6, 2021Date of Patent: September 6, 2022Assignee: AIROHA TECHNOLOGY CORP.Inventors: Hung-I Chen, Yu-Hua Liu
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Patent number: 11431166Abstract: A gate driver integrated circuit includes a high-side region that operates in a first voltage domain according to a first pair of supply terminals that include a first lower supply terminal and a first higher supply terminal; a low-side region that operates in a second voltage domain according to a second pair of supply terminals; a low-voltage region the operates in a third voltage domain; at least one termination region that electrically isolates the high-side region from the low-side region and the low-voltage region; a first electrostatic device arranged in the high-side region and connected to the first pair of supply terminals; a second electrostatic device arranged in the low-side region and connected to the second pair of supply terminals; and a third electrostatic device connected to a lower supply terminal of the first pair of supply terminals and is coupled in series with the first electrostatic device.Type: GrantFiled: April 2, 2020Date of Patent: August 30, 2022Inventor: Matteo Albertini
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Patent number: 11417391Abstract: A memory device includes a level down shifting driver circuit. The level down shifting driver circuit include input circuitry having at least one input port, and a cross-junction circuitry electrically coupled to the input circuitry and configured to receive a first signal from the input circuitry to drive one or more devices included in the cross-junction circuitry. The level down shifting driver circuit further includes an output drive circuitry electrically coupled to the cross-junction circuitry and configured to receive a second signal from the cross-junction circuitry, wherein the output drive circuitry comprises an output line configured to deliver a first voltage output based on a first input voltage received by the input circuitry, and a second voltage output based on a second input voltage received by the input circuitry.Type: GrantFiled: August 28, 2020Date of Patent: August 16, 2022Assignee: Micron Technology, Inc.Inventor: Tae H. Kim
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Patent number: 11411494Abstract: A first current mirror circuit is provided between a first transistor and a power supply line to return a current that flows to the first transistor. A second current mirror circuit returns an output current from the first current mirror circuit, and generates a starting current. An inverter has an input connected to a node, and an output connected to a control terminal of the first transistor. A first current source generates a first current when a power supply voltage has exceeded a first threshold value. A third current mirror circuit draws a current proportional to the first current from an input side of the second current mirror circuit. A second current source supplies a second current to the node when the power supply voltage has exceeded a second threshold value.Type: GrantFiled: January 28, 2021Date of Patent: August 9, 2022Assignee: ROHM Co., LTD.Inventors: Naohiro Nomura, Takatoshi Manabe
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Patent number: 11410718Abstract: A memory device includes a common gate input buffer circuit. The input buffer circuit includes an input node configured to receive a signal representative of data to be stored in the memory device and a voltage reference node. The input buffer circuit further includes an amplification circuit electrically coupled to the input node and to the voltage reference node and configured to amplify the signal to provide for an amplified signal. The input buffer circuit additionally includes an equalization circuit electrically coupled to the amplification circuit and configured to process the amplified signal to provide for a filtered signal and an output circuit electrically coupled to equalization circuit and configured to provide for at least one output signal based on the filtered signal, wherein the output signal comprises a differential output signal and wherein the common gate input buffer circuit does not include a common mode feedback (CMFB) loop.Type: GrantFiled: December 31, 2020Date of Patent: August 9, 2022Assignee: Micron Technology, Inc.Inventor: Shin Deok Kang