公开(公告)号：US20240223186A1

公开(公告)日：2024-07-04

申请号：US18533161

申请日：2023-12-07

Applicant: Delta Electronics (Shanghai) Co., Ltd.

Inventor： Yuesen Guo ,  Kai Dong ,  Chang Xu

IPC: H03K17/76 ,  H01L29/866

CPC classification number: H03K17/76 ,  H01L29/866 ,  H03K2217/0081

Abstract: The present disclosure provides a driving system for driving a switching device and including a switch driving module and corresponding a switching device. The switch driving module receives a driving signal and outputs a driving voltage. The switching device is electrically coupled to the switch driving module, the switching device receives the driving voltage and is turned on or off accordingly. The switch driving module includes a high-impedance voltage dividing module and a constant voltage dividing module. The high-impedance voltage dividing module is configured for dividing and limiting the driving voltage of the switching device when the switching device is turned on. The constant voltage dividing module provides a low-impedance shunt path for the gate-source of the switching device when the switching device is turned off and the changing rate of a drain-source voltage of the switching device is too high.

公开(公告)号：US20240195413A1

公开(公告)日：2024-06-13

申请号：US18583386

申请日：2024-02-21

Applicant: SKYWORKS SOLUTIONS, INC.

Inventor： Lynn Yun Kong ,  Yi Yang ,  Bo Zhou

IPC: H03K17/693 ,  H03K17/0412 ,  H03K17/16

CPC classification number: H03K17/693 ,  H03K17/04123 ,  H03K17/162 ,  H03K2217/0081

Abstract: A switching circuit comprises a radio frequency (RF) switch, a gate resistor, a voltage source, a transmission gate, and coupling circuitry configured to couple a gate of the RF switch, a first side of the gate resistor, and the transmission gate at a first node and the voltage source, a second side of the gate resistor, and the transmission gate at a second node.

公开(公告)号：US11973457B2

公开(公告)日：2024-04-30

申请号：US17323602

申请日：2021-05-18

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics Application GMBH ,  STMicroelectronics (Alps) SAS

Inventor： Aldo Occhipinti ,  Christophe Roussel ,  Fritz Burkhardt ,  Ignazio Testoni

IPC: H02P3/18 ,  E05F15/60 ,  H02P6/16 ,  H02P7/03 ,  H02P7/29 ,  H03K3/037 ,  H03K17/687 ,  B60J5/10 ,  B60R16/033

CPC classification number: H02P7/04 ,  E05F15/60 ,  H02P7/29 ,  H03K3/0377 ,  H03K17/6871 ,  B60J5/10 ,  B60R16/033 ,  E05Y2201/434 ,  E05Y2900/548 ,  H03K2217/0063 ,  H03K2217/0072 ,  H03K2217/0081

Abstract: An embodiment driver circuit comprises a power supply pin configured to receive a power supply voltage, and a set of control pins configured to provide a set of control signals for controlling switching of a set of switches of an h-bridge circuit comprising a pair of high-side switches and a pair of low-side switches. The driver circuit comprises control circuitry coupled to the control pins and configured to generate the control signals, and sensing circuitry coupled to the power supply pin and configured to generate a detection signal indicative of the power supply voltage exceeding a threshold value. The control circuitry is sensitive to the detection signal and is configured to generate the control signals to activate one of the pair of high-side switches and the pair of low-side switches and de-activate the other of the pair of high-side switches and the pair of low-side switches.

公开(公告)号：US11962233B2

公开(公告)日：2024-04-16

申请号：US18141911

申请日：2023-05-01

Applicant: Skyworks Solutions, Inc.

Inventor： Michael Robert May ,  Fernando Naim Lavalle Aviles ,  Carlos Jesus Briseno-Vidrios ,  Patrick Johannus De Bakker ,  Gabor Marek ,  Charles Guo Lin ,  Peter Onody ,  Tamas Marozsak ,  Andras V. Horvath

IPC: H02M1/08 ,  H03K17/18 ,  H03K17/68 ,  H03K17/689 ,  H03K17/691 ,  H03K17/567

CPC classification number: H02M1/08 ,  H03K17/18 ,  H03K17/689 ,  H03K17/691 ,  H03K17/567 ,  H03K2217/0081

Abstract: An isolated gate driver has a first portion in a first voltage domain and a second portion in a second voltage domain. The first and second portions are coupled by an isolation communication channel. The isolated gate driver transmits across the isolation communication channel a serial word containing first drive strength information and simultaneously transmits gate information with the serial word across the isolation communication channel. The gate information indicates a state of a gate signal for a transistor coupled to the second portion of the isolated gate driver. A demodulator circuit demodulates a signal containing the gate information and the drive strength information transmitted across the isolation communication channel in the serial word. A gate signal output circuit coupled to the demodulator circuit supplies the gate signal based on the gate information with a drive strength of the gate signal being based on the drive strength information.

公开(公告)号：US11888391B2

公开(公告)日：2024-01-30

申请号：US17489233

申请日：2021-09-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Shyamsunder Balasubramanian ,  Kuangyu Chiang ,  Toshio Yamanaka ,  Luis Eduardo Ossa

IPC: H02M1/08 ,  H02M3/07 ,  H03K17/06 ,  H02M1/32

CPC classification number: H02M3/07 ,  H02M1/08 ,  H02M1/32 ,  H03K17/063 ,  H03K2217/0081

Abstract: A device includes a charge pump configured to provide a current to a bootstrap capacitor responsive to a charge pump switch being closed. The device also includes a current limiter coupled in series between the charge pump switch and the charge pump. The current limiter is configured to receive a control signal from a controller that indicates whether the device is to operate in a first mode or in a second mode; responsive to the control signal indicating the first mode, allow a first value of current to the charge pump switch; and, responsive to the control signal indicating the second mode, limit the current to the charge pump switch to a second value. The second value is less than the first value.

公开(公告)号：US11881759B2

公开(公告)日：2024-01-23

申请号：US17888001

申请日：2022-08-15

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Fabrizio Bognanni ,  Giovanni Caggegi ,  Giuseppe Cantone ,  Vincenzo Marano ,  Francesco Pulvirenti

IPC: H02M1/08 ,  H02M3/07 ,  H02M3/158 ,  H03K17/687

CPC classification number: H02M1/08 ,  H02M3/07 ,  H02M3/158 ,  H03K17/6872 ,  H03K2217/0081

Abstract: A circuit includes a current path and a negative bootstrap circuitry coupled to the current path. The current path is coupled between a floating voltage and a reference ground, and includes a current generator coupled through a resistor to the floating voltage at a first node of the current generator. The current generator is controlled by a pulse signal. The negative bootstrap circuitry includes a pump capacitor coupled to a second node of the current generator and to the reference ground. The pump capacitor is configured to provide a negative voltage at the second node of the current generator based on the pulse signal.

公开(公告)号：US11838020B1

公开(公告)日：2023-12-05

申请号：US17179615

申请日：2021-02-19

Applicant: SK hynix Inc.

Inventor： Woongrae Kim ,  Yoo-Jong Lee ,  A-Ram Rim

IPC: H03K19/00 ,  G11C5/14 ,  H03K17/693

CPC classification number: H03K19/0016 ,  G11C5/148 ,  H03K17/693 ,  G11C2207/2227 ,  H03K2217/0081

Abstract: A semiconductor device includes a first circuit having a first power gating structure, a second circuit, and a third circuit having a second power gating structure that is different from the first power gating structure, and suitable for isolating the second circuit from the first circuit during a particular period.

公开(公告)号：US11837946B2

公开(公告)日：2023-12-05

申请号：US17745700

申请日：2022-05-16

Applicant: Navitas Semiconductor Limited

Inventor： Santosh Sharma ,  Daniel Marvin Kinzer

IPC: H02M3/158 ,  H02M1/08 ,  H03K17/081

CPC classification number: H02M1/08 ,  H02M3/1588 ,  H03K17/08104 ,  H03K2217/0063 ,  H03K2217/0072 ,  H03K2217/0081

Abstract: A GaN half bridge circuit is disclosed. The circuit includes a bootstrap power supply voltage generator is configured to supply a first power voltage and includes a switch node. The circuit also includes a bootstrap transistor, a bootstrap transistor drive circuit, and a bootstrap capacitor connected to the switch node and to the bootstrap transistor. The bootstrap capacitor is configured to supply the first power voltage while the voltage at the switch node is equal to the second switch node voltage, the bootstrap transistor is configured to electrically connect the bootstrap capacitor to a power node at a second power voltage while the voltage at the switch node is equal to the first switch node voltage, and the bootstrap power supply voltage generator does not include a separate diode in parallel with the drain and source of the bootstrap transistor.

公开(公告)号：US20230352927A1

公开(公告)日：2023-11-02

申请号：US18102443

申请日：2023-01-27

Applicant: Symptote Technologies LLC

Inventor： Mark D. Creech

IPC: H02H3/08 ,  H03K17/082 ,  H02H3/087 ,  H03K17/042 ,  H03K17/0412 ,  H01L27/02 ,  H02H9/02 ,  H02M1/32

CPC classification number: H02H3/085 ,  H03K17/0822 ,  H02H3/087 ,  H03K17/04206 ,  H03K17/04123 ,  H01L27/0266 ,  H01L27/0288 ,  H02H3/08 ,  H02H9/025 ,  H02M1/32 ,  H03K2217/0081 ,  H03K2017/6875

Abstract: Devices having one primary transistor, or a plurality of primary transistors in parallel, protect electrical circuits from overcurrent conditions. Optionally, the devices have only two terminals and require no auxiliary power to operate. In those devices, the voltage drop across the device provides the electrical energy to power the device. A third or fourth terminal can appear in further devices, allowing additional overcurrent and overvoltage monitoring opportunities. Autocatalytic voltage conversion allows certain devices to rapidly limit or block nascent overcurrents.

公开(公告)号：US11804831B2

公开(公告)日：2023-10-31

申请号：US17082715

申请日：2020-10-28

Applicant: SHENZHEN CARKU TECHNOLOGY CO., LIMITED

Inventor： Yun Lei ,  Zhifeng Zhang ,  Jianmeng Wu ,  Changxi Chen

IPC: H03K17/0812 ,  H03K17/687 ,  H03K17/00

CPC classification number: H03K17/0812 ,  H03K17/005 ,  H03K17/6871 ,  H03K17/6877 ,  H03K2217/0027 ,  H03K2217/0081

Abstract: An NMOS switch driving circuit and a power supply device are provided. The NMOS switch driving circuit includes a power-supply unit, a switch unit, a power conversion unit, and a driving unit. The power-supply unit is configured to output a first voltage. The switch unit is electrically coupled between the power-supply unit and a first interface and configured to establish or disconnect an electrical coupling between the power-supply unit and the first interface. The power conversion unit includes a port coupled to the power-supply unit and another port electrically coupled to the switch unit via the driving unit. The power conversion unit is configured to convert the first voltage into a constant driving voltage and output the driving voltage to the switch unit via the driving unit to drive the switch unit to be switched on, to establish the electrical coupling between the power-supply unit and the first interface.