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公开(公告)号：US12289043B2
公开(公告)日：2025-04-29
申请号：US18068549
申请日：2022-12-20
Applicant: Hiroaki Takehana , Takumi Hyugaji
Inventor： Hiroaki Takehana , Takumi Hyugaji
Abstract: An insulated power supply apparatus includes, a transformer; a switching element connected in series with a primary side winding of the transformer; an active clamp circuit connected between terminals of the primary side winding of the transformer; and a power supply control semiconductor device. The switching element includes a field effect transistor and a current-voltage conversion element is connected between a source terminal of the switching element and a grounding point. The power supply control semiconductor device includes the following, a first external terminal in which voltage according to a drain side of the switching element is input, a second external terminal in which voltage converted by the current-voltage conversion element is input, an on/off control circuit that performs turn-on and turn-off of the switching element, and a ZVS determining circuit that determines whether zero voltage switching control is performed.
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公开(公告)号：US20250132662A1
公开(公告)日：2025-04-24
申请号：US18489395
申请日：2023-10-18
Applicant: Infineon Technologies Austria AG
Inventor： Alfredo MEDINA-GARCIA , Martin KRÜGER
Abstract: A method of controlling a switched-mode power supply (SMPS) based on a pulse-width modulation (PWM) control signal is provided to convert an input voltage to an output voltage. The method includes generating an error signal based on a difference between the output voltage and a target output voltage; filtering the error signal to generate a filtered error signal; generating a feed-forward signal based on at least one feed-forward parameter related to at least one of the output voltage, the input voltage, an output power of the SMPS, or an output current corresponding to the output voltage; adding the feed-forward signal and the filtered error signal to generate an integrator input signal; and applying a nonlinear integration function to the integrator input signal to generate the PWM control signal.
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公开(公告)号：US20250132559A1
公开(公告)日：2025-04-24
申请号：US18923810
申请日：2024-10-23
Applicant: SEIKO EPSON CORPORATION
Inventor： Masuhide IKEDA
Abstract: A circuit device includes a first low-potential-side power source terminal, a second low-potential-side power source terminal, a drive circuit, a switching control circuit, and a bidirectional thyristor for electrostatic protection. The drive circuit is coupled to the first low-potential-side power source terminal and drives a drive target with a switching operation. The switching control circuit is coupled to the second low-potential-side power source terminal and controls the switching operation of the drive circuit. One end of the bidirectional thyristor is coupled to the first low-potential-side power source terminal and another end of the bidirectional thyristor is coupled to the second low-potential-side power source terminal.
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公开(公告)号：US20250125725A1
公开(公告)日：2025-04-17
申请号：US18922179
申请日：2024-10-21
Applicant: Navitas Semiconductor Limited
Inventor： Victor Sinow , Weijing Du
Abstract: Systems and methods that automatically detect state of switches in power converters are disclosed. In one aspect, a power switch includes a first switch coupled between a power input node and a first terminal of a load, a second switch coupled between the power input node and a second terminal of the load, first and second current sense devices arranged to transmit first and second signals including at least one of a magnitude and polarity of first and second currents through the first and second switches, respectively, a first driver circuit arranged to transmit first control signals to the first switch based at least in part on a voltage at the power input node and the first signal, and a second driver circuit arranged to transmit second control signals to the second switch based at least in part on the voltage at the power input node and the second signal.
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公开(公告)号：US12278557B2
公开(公告)日：2025-04-15
申请号：US18014298
申请日：2021-06-30
Applicant: LS ELECTRIC CO., LTD.
Inventor： Sun Jae Yoon , Ki Woo Park , Jung Won Seo
IPC: H02M7/487 , H02M1/08 , H02M1/32 , H02M1/36 , H02M7/5395 , H03K17/0812 , H03K17/284
Abstract: The present disclosure relates to a power conversion device and a control method thereof and, more specifically, to a power conversion device which may protect a switching element when performing stopping of driving, and a control method thereof. A power conversion device according to an embodiment of the present disclosure comprises a pulse width modulation (PWM) controller for outputting, to a gate driver, a first pulse width modulation signal for controlling a first switching element, a second pulse width modulation signal for controlling a second switching element, a third pulse width modulation signal for controlling a third switching element, and a fourth pulse width modulation signal for controlling a fourth switching element.
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Patent Agency Ranking
公开(公告)号：US20250119134A1
公开(公告)日：2025-04-10
申请号：US18730970
申请日：2022-04-21
Applicant: Mitsubishi Electric Corporation
Inventor： Kazuaki HIYAMA
IPC: H03K17/042 , H02M1/08 , H03K17/284
Abstract: An object is to provide a technique capable of optimizing the turn-on speed. A driver device includes a gate drive circuit power supply capable of changing an output voltage; a power supply having a fixed voltage lower than the output voltage; a control unit that changes the output voltage of the gate drive circuit power supply on the basis of related information related to a load current of the semiconductor switching element; and a delay circuit that, when the gate drive signal is turned on, performs control to supply the fixed voltage to a gate of the semiconductor switching element for a predetermined period, and then performs control to supply the output voltage to the gate.
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公开(公告)号：US20250119066A1
公开(公告)日：2025-04-10
申请号：US18888677
申请日：2024-09-18
Applicant: Solaredge Technologies Ltd.
Inventor： Ilan Yoscovich , Tzachi Glovinsky , Guy Sella , Yoav Galin
Abstract: A multi-level inverter having one or more banks, each bank containing a plurality of low voltage MOSFET transistors. A processor configured to switch the plurality of low voltage MOSFET transistors in each bank to switch at multiple times during each cycle.
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公开(公告)号：US12273096B2
公开(公告)日：2025-04-08
申请号：US18032420
申请日：2021-10-22
Applicant: SIGNIFY HOLDING B.V.
Abstract: A driver circuit is for driving a GaN power commutation switch of a switch mode power converter. A sensing component is connected to the GaN switch for sensing a parameter such as a peak current of the power commutation. An energy storage component provides a certain turn on voltage between the gate and source of the GaN switch. The charging and discharging of the energy storage component is regulated, and the sensing is disabled with timing which is synchronized with the charging and discharging function of the energy storage component. It is prevented that a voltage across the sensing component reduces the generated gate-source drive voltage of the GaN switch.
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公开(公告)号：US12270084B2
公开(公告)日：2025-04-08
申请号：US18678414
申请日：2024-05-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ronnie Antone Bean, Jr. , Benjamin Matthew McCue
IPC: H02M3/155 , A61K35/74 , A61K39/02 , A61P31/04 , C07K14/195 , C12N1/20 , C12N15/74 , C12Q1/689 , H02J7/00 , H02M1/00 , H02M1/08 , A61K39/00
Abstract: A circuit includes a current sensor circuit having inputs and an output. The current sensor inputs are adapted to be coupled to inductor terminals a power converter. The current sensor circuit includes a tunable time constant circuit coupled between the current sensor inputs and the current sensor output. A time constant control circuit is coupled to a tunable time constant circuit, and is configured to tune the time constant circuit responsive to the current sensor output and another signal representative of inductor current. An adjustable gain circuit has a first input coupled to the current sensor output. A direct current resistance (DCR) control circuit has an output coupled to a second input of the adjustable gain circuit, and the DCR control circuit is configured to provide a gain adjust signal at the output thereof responsive to an average current of the inductor and a current command signal for the power converter.
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公开(公告)号：US20250112540A1
公开(公告)日：2025-04-03
申请号：US18375214
申请日：2023-09-29
Applicant: Texas Instruments Incorporated
Inventor： Ariel Dario Moctezuma , Sethu Mathavan Meikandamuthu Ayanar , Nimidev Kovilparambil Prasannan
Abstract: An example apparatus includes: error detection circuitry having an input and an output, the error detection circuitry configured to integrate a difference between a voltage of the input of the error detection circuitry and a reference voltage to produce an integrated error voltage; peak controller circuitry coupled to the error detection circuitry, the peak controller circuitry to compare a control current to a first reference current to generate a peak control current, the control current based on an integrated error voltage, the peak control current to increase an output current of converter circuitry; and valley controller circuitry coupled to the error detection circuitry and the peak controller circuitry, the valley controller circuitry to compare the control current to a second reference current to generate a valley control current, the valley control current to decrease the output current of the converter circuitry.
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