公开(公告)号：US20240223085A1

公开(公告)日：2024-07-04

申请号：US18607702

申请日：2024-03-18

Applicant: Taiwan Semiconductor Manufacturing Company Limited

Inventor： Chia-Chun Chang ,  Alan Roth ,  Eric Soenen ,  Tysh-Bin Liu

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/38 ,  H02M3/157 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M1/38 ,  H02M3/157 ,  H02M1/0009 ,  H02M1/0029

Abstract: Devices and methods are provided for controlling dead-time of a direct current to direct current (DC-DC) converter. A control circuit includes a first transistor having a source/drain terminal coupled to an output voltage of the DC-DC converter configured to provide current based on the output voltage. The control circuit also includes a digital up/down counter having an output terminal electrically coupled to an input terminal of a delay cell of the DC-DC converter. A current sensing circuit of the control circuit is electrically coupled to an input terminal of the digital up/down counter configured to receive the current and drive the digital up/down counter based on the current.

公开(公告)号：US20240223082A1

公开(公告)日：2024-07-04

申请号：US18150149

申请日：2023-01-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Weibing Jing ,  Lei Chen ,  Bing Liu

IPC: H02M1/08 ,  H02M3/157 ,  H02M3/158

CPC classification number: H02M1/08 ,  H02M3/157 ,  H02M3/158

Abstract: An integrated circuit (IC) includes a pin, a first passive component determination circuit, and a first switch having a first switch control input. The first switch is coupled between the first passive component determination circuit and the pin. The IC further includes a second passive component determination circuit and a second switch having a second switch control input. The second switch is coupled between the second passive component determination circuit and the pin. A logic circuit is coupled to first switch control input and to the second switch control input. The logic circuit is configured to close the first switch and open the second switch and then open the first switch and close the second switch.

公开(公告)号：US20240223076A1

公开(公告)日：2024-07-04

申请号：US18149557

申请日：2023-01-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Bradford Lawrence HUNTER ,  Jing YE

IPC: H02M3/07 ,  H02M1/08

CPC classification number: H02M3/07 ,  H02M1/08

Abstract: In an example, a system includes a charge pump. The system includes a transistor coupled to a power terminal, the transistor gate coupled to a charge pump output. The system includes current sense circuitry having a power input, a load input and a sense output, where the power input is coupled to the power terminal, the current sense circuitry is configured to provide a sense signal at the sense output, and the sense signal represents a polarity and a magnitude of a current at the load input. The system includes a controller having a sense input coupled to the sense output and a control output coupled to the control input, where the controller is configured to provide a control signal at the control output responsive to the sense signal, and the charge pump is configured to adjust a voltage at the charge pump output responsive to the control signal.

公开(公告)号：US12027590B2

公开(公告)日：2024-07-02

申请号：US17428990

申请日：2019-09-27

Applicant: Mitsubishi Electric Corporation

Inventor： Munetaka Noguchi

IPC: H01L29/16 ,  H01L21/265 ,  H01L29/08 ,  H01L29/10 ,  H01L29/36 ,  H01L29/66 ,  H01L29/739 ,  H01L29/78 ,  H02M1/08

CPC classification number: H01L29/1608 ,  H01L21/26506 ,  H01L21/26586 ,  H01L29/083 ,  H01L29/1095 ,  H01L29/36 ,  H01L29/66068 ,  H01L29/7397 ,  H01L29/7802 ,  H01L29/7813 ,  H01L29/7828 ,  H02M1/08

Abstract: A silicon carbide semiconductor device includes a drift layer of n-type formed on a semiconductor substrate composed of silicon carbide, a well region of p-type formed on a surface portion of the drift layer, a source region of p-type formed on a surface portion of the well region, a gate insulating film formed in contact with the source region, the well region, and the drift layer, and a gate electrode formed on the gate insulating film. In the silicon carbide semiconductor device, oxygen is contained in a region having a predetermined thickness from an interface between the well region and the gate insulating film toward the well regions side.

公开(公告)号：US20240213975A1

公开(公告)日：2024-06-27

申请号：US18438707

申请日：2024-02-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Navaneeth Kumar Narayanasamy

IPC: H03K17/08 ,  H02M1/08 ,  H03K17/06 ,  H03K17/28 ,  H03K17/60

CPC classification number: H03K17/08 ,  H02M1/08 ,  H03K17/06 ,  H03K17/28 ,  H03K17/60

Abstract: An electronic circuit for controlling a power switch having a gate input, includes a signal generator configured to generate a gate driver input signal. The gate driver input signal has a first voltage during a first period of time, a second voltage during a second period of time, and toggles between the first voltage and the second voltage during a third period of time. The electronic circuit also includes a gate driver configured to receive the gate driver input signal and to provide a gate driver output signal based on the gate driver input signal. The signal generator is configured to cause the gate driver input signal to toggle during the third period of time such that the gate driver output signal has a third voltage during the second period of time, and an intermediate voltage that is less than the third voltage during the third period of time.

公开(公告)号：US12021511B2

公开(公告)日：2024-06-25

申请号：US18160358

申请日：2023-01-27

Applicant: FUJI ELECTRIC CO., LTD.

Inventor： Masanari Fujii

IPC: H03K17/082 ,  H02M1/08 ,  H03K17/567

CPC classification number: H03K17/082 ,  H02M1/08 ,  H03K17/567

Abstract: There is provided a drive circuit of a switching element and an intelligent power module both capable of preventing deterioration of a switching loss of the switching element. A gate drive circuit includes a first current supply section which supplies a first current to a gate terminal provided in an IGBT when a gate voltage of the gate terminal is lower than a first voltage, a second current supply section which supplies a second current smaller than the first current to the gate terminal when the gate voltage of the gate terminal is higher than a second voltage which is the same as or higher than the first voltage, and a third current supply section which supplies a third current smaller than the first current and larger than the second current to the gate terminal when the gate voltage of the gate terminal is lower than a third voltage lower than the first voltage.

公开(公告)号：US12021445B2

公开(公告)日：2024-06-25

申请号：US17629675

申请日：2020-03-12

Applicant: LS ELECTRIC CO., LTD.

Inventor： Sun Ho Bae ,  Jae Ho Lee

IPC: H02M1/32 ,  H02M1/00 ,  H02M1/08 ,  H02M5/458

CPC classification number: H02M1/32 ,  H02M1/0009 ,  H02M1/08 ,  H02M5/458

Abstract: Disclosed are an overcurrent protection device and a power conversion device using same. A power conversion device according to an embodiment of the present disclosure comprises: a control unit for providing a collector-emitter voltage to a switching element by means of a first output node; and an overcurrent protection circuit connected in a line between the first output node and the switching element and for limiting the overcurrent of the switching element.

公开(公告)号：US12021410B2

公开(公告)日：2024-06-25

申请号：US18117005

申请日：2023-03-03

Applicant: CYBER POWER SYSTEMS, INC.

Inventor： Jung-Hua Weng ,  Ming-Chuan Lin

IPC: H02J9/06 ,  H02J7/00 ,  H02M1/08 ,  H02M7/217

CPC classification number: H02J9/061 ,  H02J7/0013 ,  H02M1/08 ,  H02M7/217 ,  H02J2207/20

Abstract: A three-phase uninterruptible power system and an operation method thereof are provided. The three-phase uninterruptible power system comprises a DC bus, three power conversion circuits and a control circuit. When the three-phase uninterruptible power system enters a line mode from a battery mode, the control circuit performs a huge current suppression for each power conversion circuit according to a predetermined sequence. The huge current suppression performed for any of the power conversion circuits comprises the following steps: disabling the DC-DC conversion of the power conversion circuit, and having the other two power conversion circuits to additionally share the original load of the disabled power conversion circuit; and after the DC-DC conversion of the power conversion circuit is disabled, enabling the AC-DC conversion of the power conversion circuit, and having the power conversion circuits revert to their original load.

公开(公告)号：US20240204765A1

公开(公告)日：2024-06-20

申请号：US18165503

申请日：2023-02-07

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Tuli Dake

IPC: H03K17/0812

CPC classification number: H03K17/08122 ,  H02M1/08

Abstract: A driver includes first and second switches. A first transistor has a first control input and first and second current terminals. A resistor couples between a voltage supply terminal and the first control input. A configurable voltage clamp circuit has a voltage clamp control input and a voltage clamp circuit output coupled to the first control input. A second transistor has a second control input and third and fourth current terminals. A logic circuit includes a comparator having a comparator output. The logic circuit couples to the voltage supply terminal and the voltage clamp control input. The logic circuit is configured to configure the voltage clamp circuit for a first clamp voltage at the voltage clamp circuit output responsive to the first switch being turned ON and for a second clamp voltage at the voltage clamp circuit output based on a signal at the comparator output.

公开(公告)号：US20240204689A1

公开(公告)日：2024-06-20

申请号：US18184006

申请日：2023-03-15

Applicant: HL MANDO CORPORATION

Inventor： Anyeol JUNG

IPC: H02M7/5387 ,  B60L1/00 ,  B60L50/60 ,  B60L50/70 ,  H02M1/00 ,  H02M1/08 ,  H02M5/293

CPC classification number: H02M7/5387 ,  B60L1/00 ,  B60L50/60 ,  B60L50/70 ,  H02M1/0009 ,  H02M1/08 ,  H02M5/293 ,  H02J2300/30 ,  H02M1/44

Abstract: A control device for driving an external load which receives DC voltage from an energy supply unit of a vehicle and converts the DC voltage into AC voltage to supply voltage to a load outside the vehicle, according to one embodiment of the present disclosure, includes: a DC/AC output inverter that converts the received DC voltage into the AC voltage and outputs the converted AC voltage by switching of a switching element; a current sensor that senses an inductor current value of an output terminal of the DC/AC output inverter; a microcontroller that receives the sensed current value and outputs a pulse width modulation control signal input to the switching element of the DC/AC output inverter; a gate drive that receives the pulse width modulation control signal output from the microcontroller and outputs a gate driving signal to a gate of the switching element; and a comparator that compares the current value sensed by the current sensor with a preset reference current value and outputs a disable signal to forcibly stop outputting the gate driving signal when the sensed current value is not within the preset reference current value range.