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公开(公告)号：US12119739B2
公开(公告)日：2024-10-15
申请号：US17853746
申请日：2022-06-29
Applicant: Navitas Semiconductor Limited
Inventor： Marco Giandalia , Jason Zhang , Hongwei Jia , Daniel M. Kinzer
CPC classification number: H02M1/08 , G05F1/573 , H02M1/32 , H02M3/155 , H02M3/158 , H03K3/012 , H02H9/02 , H03K2217/0081
Abstract: An electronic circuit is disclosed. The electronic circuit includes a transistor having a gate terminal, a source terminal and a drain terminal, and a gate driver circuit including a pull-down transistor coupled to the gate terminal, and an input terminal arranged to receive an input signal and generate a corresponding output signal at an output terminal coupled to the gate terminal, where the gate driver circuit is arranged to store energy harvested from the input signal and use the stored energy to change a conductive state of the pull-down transistor. In one aspect, the transistor includes gallium nitride (GaN). In another aspect, the pull-down transistor includes GaN.
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公开(公告)号：US20240302854A1
公开(公告)日：2024-09-12
申请号：US18596809
申请日：2024-03-06
Applicant: Yoichi TAKANO
Inventor： Yoichi TAKANO
Abstract: Disclosed is a power supply semiconductor integrated circuit including: a power supply input terminal; a power supply output terminal; a ground terminal; a first external terminal to which a second terminal of a first capacitor is connected; a second external terminal to which a second terminal of a second capacitor is connected; a first detector which detects a voltage of the first external terminal; a second detector which detects a voltage of the second external terminal; a first switch between the first external terminal and the ground terminal; and a second switch between the second external terminal and the ground terminal. The first switch disconnects the second terminal of the first capacitor from ground potential upon receiving a signal from the first detector, and the second switch disconnects the second terminal of the second capacitor from ground potential upon receiving a signal from the second detector.
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公开(公告)号：US11874680B2
公开(公告)日：2024-01-16
申请号：US18154060
申请日：2023-01-13
Applicant: GlobalFoundries U.S. Inc.
Inventor： Shatabda Saha
Abstract: Disclosed is a power supply that automatically switches between a voltage regulation mode and an over current protection mode, as needed. The power supply includes a voltage regulator that generates a first control voltage for applying to the control terminal of a pass transistor during a voltage regulation mode to maintain an output voltage at a desired voltage level. The power supply includes a current limiter that generates a second control voltage for applying to the control terminal of the pass transistor during an over current protection mode to prevent an output current from rising above a maximum output current limit. The power supply includes additional circuitry that detects when over current protection is required and automatically switches the control voltage applied to the control terminal from the first control voltage to the second control voltage or vice versa, as necessary. Also disclosed is an associated power supply method.
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公开(公告)号：US20230411312A1
公开(公告)日：2023-12-21
申请号：US18333977
申请日：2023-06-13
Applicant: ROHM Co., LTD.
Inventor： Daisuke UCHIMOTO
IPC: H01L23/62 , H01L23/00 , H03K17/082
CPC classification number: H01L23/62 , H01L24/48 , H03K17/0822 , H01L2224/48175 , G05F1/573
Abstract: Disclosed herein is a semiconductor chip including a power transistor, a plurality of pads, a plurality of wires arranged to establish continuity between each of the plurality of pads and a first end or a second end of the power transistor, a current detection circuit configured to detect, as a sense voltage, at least one of voltage drops caused in each of the plurality of wires according to a branch current flowing through the wire and a wire resistance component of the wire, and a logic configured to determine a condition of wire bonding of each of the plurality of pads according to a result of the detection by the current detection circuit.
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公开(公告)号：US11728805B2
公开(公告)日：2023-08-15
申请号：US16847896
申请日：2020-04-14
Applicant: MACOM Technology Solutions Holdings, Inc.
Inventor： Cristiano Bazzani , Damian McCann
IPC: H03K17/16 , H01L29/20 , H01L29/778 , H03K5/24 , H03F1/22 , H03F3/217 , H03K17/082 , H03F3/72 , G05F1/573 , H02H3/08 , H03F1/52 , H02H9/02
CPC classification number: H03K17/165 , H01L29/2003 , H01L29/7787 , H03F1/223 , H03F3/2171 , H03F3/72 , H03K5/2472 , H03K17/0828 , G05F1/573 , H02H3/08 , H02H9/02 , H03F1/52 , H03F2200/462 , H03F2200/78
Abstract: Circuits for protecting devices, such as gallium nitride (GaN) devices, and operating methods thereof are described. The circuits monitor a magnitude of the current in a device and reduce the magnitude of the current and/or shut down the device responsive to the magnitude of the current exceeding a threshold. These circuits safeguard devices from damaging operating conditions to prolong the operating life of the protected devices.
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Patent Agency Ranking
公开(公告)号：US20230221745A1
公开(公告)日：2023-07-13
申请号：US17972865
申请日：2022-10-25
Applicant: NUVOTON TECHNOLOGY CORPORATION
Inventor： Hua-Chun TSENG
Abstract: An overcurrent detection device of the present disclosure has two charge storage circuits, a control module and a counter circuit. The control module controls and provides charge paths of the two charge storage circuits, so that the two charge storage circuits are charged by a reference current and a sensed current respectively, wherein the sensed current is generated by an output current of a low-dropout regulator. The counter circuit obtains a voltage of the charge storage circuit charged by the sensed current, and counts accordingly. When the counting of the counter circuit reaches a specific value, the counter circuit outputs an overcurrent detection signal. When the output current is an overcurrent, the counter circuit first counts to the specific value before the charge storage circuit which is charged by the reference current is charged to a specific voltage.
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公开(公告)号：US20230161366A1
公开(公告)日：2023-05-25
申请号：US18154060
申请日：2023-01-13
Applicant: GlobalFoundries U.S. Inc.
Inventor： Shatabda Saha
Abstract: Disclosed is a power supply that automatically switches between a voltage regulation mode and an over current protection mode, as needed. The power supply includes a voltage regulator that generates a first control voltage for applying to the control terminal of a pass transistor during a voltage regulation mode to maintain an output voltage at a desired voltage level. The power supply includes a current limiter that generates a second control voltage for applying to the control terminal of the pass transistor during an over current protection mode to prevent an output current from rising above a maximum output current limit. The power supply includes additional circuitry that detects when over current protection is required and automatically switches the control voltage applied to the control terminal from the first control voltage to the second control voltage or vice versa, as necessary. Also disclosed is an associated power supply method.
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公开(公告)号：US20190123636A1
公开(公告)日：2019-04-25
申请号：US15793583
申请日：2017-10-25
Applicant: SCHNEIDER ELECTRIC SOLAR INVERTERS USA, INC.
Inventor： Ali Moallem , Zbigniew Wolanski
CPC classification number: H02M1/36 , G05F1/563 , G05F1/573 , G05F1/61 , G05F1/618 , H02J3/383 , H02M3/156 , H02M7/48 , H02M2001/0006 , H02M2001/0045 , H02M2001/007 , H02S40/32
Abstract: According to one aspect, embodiments of the invention provide a start-up circuit for a power system, the start-up circuit comprising an input configured to be coupled to a power source and to receive input DC power from the renewable energy based power source, an output, a current regulator portion coupled to the input and configured to provide a regulated output current derived from the input DC power to the output, and a voltage regulator portion coupled to the current regulator portion and the output and configured to generate a regulated output voltage at the output derived from the input DC power.
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公开(公告)号：US20190050011A1
公开(公告)日：2019-02-14
申请号：US15758770
申请日：2016-09-13
Applicant: DENSO CORPORATION
Inventor： Yuu FUJIMOTO , Yoshihide KAI
IPC: G05F1/573 , G01R19/165 , H03K5/24
CPC classification number: G05F1/573 , G01R19/16519 , G05F1/56 , G05F3/262 , H02H3/087 , H03K5/2472
Abstract: A buffer stage includes a first transistor having a control terminal connected to an output terminal of an operational amplifier and a second transistor connected in series to a main energization path of the first transistor. An overcurrent controlling circuit is configured to apply an output voltage of the operational amplifier to the control terminal of the first transistor and allow a normal operation of the first transistor when an energization current of a main energization path of an output transistor detected by an overcurrent detection transistor is less than a predetermined value, and is configured to control the output voltage of the operational amplifier to a predetermined control voltage according to a current flowing in a main energization path of the overcurrent detection transistor when the energization current of the main energization path of the output transistor is equal to or greater than the predetermined value.
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公开(公告)号：US20180358806A1
公开(公告)日：2018-12-13
申请号：US15778377
申请日：2016-12-21
Applicant: AutoNetworks Technologies, Ltd. , Sumitomo Wiring Systems, Ltd. , SUMITOMO ELECTRIC INDUSTRIES, LTD.
Inventor： Keisuke Mase , Yuuki Sugisawa , Kota Oda , Shunichi Sawano
CPC classification number: H02H9/025 , G05F1/56 , G05F1/573 , H02H3/243 , H02J7/0029 , H02J7/0063 , H02J2007/0039 , H03K17/0822 , H03K17/18
Abstract: In a power supply control apparatus, a control circuit adjusts a resistance between a drain and a source of a semiconductor transistor by adjusting the voltage at a gate of the semiconductor transistor. After the control circuit has lowered the resistance between the drain and the source, a control portion determines whether or not the voltage at the source detected by a voltage detecting portion is larger than or equal to a standard voltage. If the voltage at the source is larger than or equal to the standard voltage, the control circuit again lowers the resistance between the drain and the source. If the voltage at the source is smaller than the standard voltage, the control circuit adjusts the resistance between the drain and the source to a resistance at the time when determination was performed or larger.
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