公开(公告)号：US11929742B2

公开(公告)日：2024-03-12

申请号：US14759051

申请日：2014-04-23

Applicant: VITESCO TECHNOLOIGES GERMANY GMBH

Inventor： Goeran Schubert ,  Andreas Pschorr ,  Diego Antongirolami ,  Ulrich Bley

IPC: H03K17/687 ,  H03K17/0412 ,  H03K17/042 ,  H03K17/16 ,  H03K17/567

CPC classification number: H03K17/687 ,  H03K17/04123 ,  H03K17/04206 ,  H03K17/163 ,  H03K17/166 ,  H03K17/567

Abstract: An electronic component is switched under the control of a pulse-width modulation signal. The electronic component outputs an output signal that is controlled by a control signal. The switching on or off is initiated within a pulse-width modulation cycle period at a level change time by a change of the pulse-width modulation signal. The control signal is set within each PWM cycle period to a first control value between the level change time and a first switching time, to a second control value between the first switching time and a second switching time, and to a third control value from the second switching time until a final gate-voltage value is reached on the gate of the electronic component. Each switching time of a PWM period is determined in dependence on an amplitude value determined during a preceding PWM cycle period, to limit amplitudes of the oscillation of the output signal.

公开(公告)号：US11848667B2

公开(公告)日：2023-12-19

申请号：US17840489

申请日：2022-06-14

Applicant: LEN Technology Limited

Inventor： Song Qin

IPC: H03K17/687 ,  H03K17/082 ,  H03K17/16

CPC classification number: H03K17/6872 ,  H03K17/0822 ,  H03K17/163 ,  H03K17/166 ,  H03K17/687

Abstract: A load switch circuit includes a power transistor, the first terminal is configured to receive the power supply voltage, and the second terminal is the output terminal of the load switch circuit and is coupled with an external inductive load; a clamping module including at least a mutually coupled clamping unit and a driving unit; the clamping unit, including a voltage-current converter and a first resistor, the first resistor is coupled between the output terminal of the voltage-current converter and the second terminal of the power transistor, the output terminal of the drive unit is coupled to the control terminal of the power transistor when the difference between the power supply voltage and the output voltage of the power transistor is greater than or equal to the preset clamping threshold, and the clamping unit outputs an effective drive control signal to the driving unit.

公开(公告)号：US20230261657A1

公开(公告)日：2023-08-17

申请号：US18307994

申请日：2023-04-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kyoung Min Lee ,  James M. Walden ,  Brian Linehan ,  Yang Zhang

IPC: H03K19/003 ,  H03K17/16 ,  H03K17/081 ,  H03K17/0812

CPC classification number: H03K19/00384 ,  H03K17/166 ,  H03K17/08104 ,  H03K17/08122 ,  H03K17/0812 ,  H03K17/163

Abstract: In a transistor turnoff system, a transistor control circuit is configured to adjust a control voltage at a transistor control output responsive to a comparison signal at a control input. The control voltage has a slew rate. A comparator has a comparator output and first and second comparator inputs. The first comparator input is coupled to the transistor control output. The comparator is configured to: provide the comparison signal at the comparator output based on a reference voltage at the second comparator input; and deactivate the transistor control circuit by changing a state of the comparison signal responsive to the control voltage falling below the reference voltage. A slew-rate compensator is configured to increase the reference voltage by a compensation voltage that compensates for a time delay of the comparator or the transistor control circuit. The compensation voltage is proportional to the slew rate.

公开(公告)号：US20190199193A1

公开(公告)日：2019-06-27

申请号：US16229733

申请日：2018-12-21

Applicant: GE Energy Power Conversion Technology Limited

Inventor： Hendrik Gloes ,  Martin Geske ,  Piotr Szczupak

IPC: H02M1/08 ,  H03K17/687

CPC classification number: H02M1/08 ,  H02M1/44 ,  H02M7/538 ,  H02M2001/0054 ,  H03K17/163 ,  H03K17/6871

Abstract: A method and a device for controlling a commutation process of a load current between two switching modules are disclosed that each have a MOSFET that can be controlled by a gate-source voltage, and an intrinsic-body inverse diode. To reduce oscillations in the down-commutation of the inverse diodes caused by parasitic circuit parameters, after switching off one of the switching modules, the gate-source control voltage applied to this switching module is temporarily switched off until being increased again the vicinity of the threshold voltage for switching on the MOSFET, before and while the other switching module is switched on, in order to commutate the current from the inverse diode of the one switching module to the MOSFET of the other switching module.

公开(公告)号：US20180367132A1

公开(公告)日：2018-12-20

申请号：US16110147

申请日：2018-08-23

Applicant: BYD COMPANY LIMITED

Inventor： Ping FU ,  Fei GAO

IPC: H03K17/081 ,  H02H9/04

CPC classification number: H03K17/08104 ,  H01L27/0255 ,  H02H9/045 ,  H02M1/08 ,  H03K17/08142 ,  H03K17/0822 ,  H03K17/163 ,  H03K17/166 ,  H03K19/0185

Abstract: The present disclosure discloses a drive circuit of a transistor, including: a high-voltage power supply and a low-voltage power supply; a high-voltage power supply domain circuit and a low-voltage power supply domain circuit, where the high-voltage power supply domain circuit is connected to the high-voltage power supply; an electrostatic discharge apparatus; a level shifter circuit, wherein the level shifter circuit includes a level detection circuit, a current limiting module, a discharge module, and a switch transistor, the level detection circuit is connected to a positive electrode of the high-voltage power supply and is separately connected to the current limiting module, the discharge module, and the high-voltage power supply domain circuit, the current limiting module is further connected to a first end of the switch transistor, the discharge module is further connected to a negative electrode of the high-voltage power supply, a control end of the switch transistor is connected to the low-voltage power supply domain circuit and a second end of the switch transistor is connected to a negative electrode of the low-voltage power supply, the current limiting module is configured to limit the discharged electricity when the drive circuit performs electrostatic discharge, and the discharge module is configured to form a discharge assisting path between the negative electrode of the high-voltage power supply and the first end of the switch transistor to assist electrostatic discharge of the drive circuit.

公开(公告)号：US20180331633A1

公开(公告)日：2018-11-15

申请号：US15590142

申请日：2017-05-09

Applicant: City University of Hong Kong

Inventor： Shu Hung Henry Chung ,  Kewei Wang

IPC: H02M7/53846 ,  H02M1/08 ,  H02M7/5387

CPC classification number: H02M7/5387 ,  H02M1/12 ,  H02M3/155 ,  H03K17/163

Abstract: A circuit arrangement for use in a power conversion stage and a method of controlling a power conversion stage includes at least two electronic devices connected in series, the at least two electronic devices including at least one active power electronic device operable in a plurality of operation states including an active linearly operated state; wherein the at least one active power electronic device is arranged to be controlled and to operate in the plurality of operation states in each of a plurality conversion cycles, such that a generation of electric harmonics in the power conversion stage is suppressed during an operation of the power conversion stage.

公开(公告)号：US20180301549A1

公开(公告)日：2018-10-18

申请号：US15767310

申请日：2016-10-17

Applicant: HITACHI POWER SEMICONDUCTOR DEVICE, LTD.

Inventor： Yujiro TAKEUCHI ,  Mutsuhiro MORI

IPC: H01L29/739 ,  H01L29/872 ,  H01L29/16 ,  H01L29/10 ,  H03K17/16 ,  H02M7/5387

CPC classification number: H01L29/7397 ,  H01L29/1095 ,  H01L29/1608 ,  H01L29/739 ,  H01L29/78 ,  H01L29/872 ,  H02M1/08 ,  H02M7/48 ,  H02M7/5387 ,  H02M7/53875 ,  H02M2001/0048 ,  H02P27/06 ,  H03K17/08128 ,  H03K17/08148 ,  H03K17/163 ,  H03K17/168 ,  Y02B70/1483 ,  Y02B70/1491

Abstract: An electric power converter (100) which is provided with a switching element (101) and a rectifying element (102) that is connected in series to the switching element (101). This electric power converter (100) has a configuration wherein an external electrical load (103) is connected to the connection point of the switching element (101) and the rectifying element (102). The switching element (101) is composed of an insulating gate type semiconductor element that has a first gate terminal (105) and a second gate terminal (106). The rectifying element (102) is composed of a diode that has a Schottky junction which uses silicon carbide as a semiconductor base. Different driving signals are applied to the first gate terminal (105) and the second gate terminal (106), respectively.

公开(公告)号：US20180269870A1

公开(公告)日：2018-09-20

申请号：US15903242

申请日：2018-02-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hidetoshi MORISHITA ,  Hikaru WATANABE

IPC: H03K17/16 ,  H03K17/0812 ,  H03K17/687

CPC classification number: H03K17/162 ,  H03K17/08122 ,  H03K17/163 ,  H03K17/166 ,  H03K17/687

Abstract: A gate potential control device configured to control potential of a gate of a main switching element is provided herein. The gate potential control device includes: a turn-on switching element and a turn-off switching element. In a turn-off operation, a main voltage between main terminals of the main switching element increases from an on-voltage to a peak value of a surge voltage and then decreases to an off-voltage. The gate potential control device is configured to keep both of the turn-on switching element and the turn-off switching element turned off in a period which is at least a part of a specific period in the turn-off operation, the specific period being from a timing after a predetermined time lapse from a timing of rise-up of the main voltage from the on-voltage to a timing at which the main voltage reaches the peak value.

公开(公告)号：US20180248540A1

公开(公告)日：2018-08-30

申请号：US15965007

申请日：2018-04-27

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Takuya ISHII ,  Daijiro ARISAWA ,  Masanori ITO ,  Takao HASHIMOTO ,  Takeshi AZUMA ,  Miwa ISHITSUBO ,  Kazuhiro MURATA

IPC: H03K3/013 ,  H03K17/16 ,  H05K1/18

CPC classification number: H03K3/013 ,  H02M1/08 ,  H02M2001/348 ,  H03K17/161 ,  H03K17/163 ,  H05K1/0243 ,  H05K1/181 ,  H05K2201/10166 ,  H05K2201/10545

Abstract: A switching circuit includes main switching a device and a drive circuit. The main switching device has a gate terminal, a drain terminal, and a first source terminal through which a main current flows, and a second source terminal for gate drive connected to drive circuit. The drive circuit has a bias capacitor having a negative electrode terminal connected to the second source terminal, a first series circuit formed between a positive electrode terminal and the gate terminal by connecting a high-side switch, a resistor, and a capacitor in series, and a second series circuit formed between the gate terminal and the second source terminal by connecting the capacitor, a resistor and a low-side switch in series. The drive circuit adjusts each of gate charge and discharge currents, and further damps the oscillation of the waveform of gate current/voltage.

公开(公告)号：US20180191339A1

公开(公告)日：2018-07-05

申请号：US15127380

申请日：2015-03-18

Applicant: TM4 INC.

Inventor： Jean-Marc CYR

IPC: H03K17/081 ,  H02M1/08 ,  H03K17/16

CPC classification number: H03K17/08104 ,  H02M1/08 ,  H02M1/34 ,  H02M2001/0058 ,  H02M2001/346 ,  H03K17/08116 ,  H03K17/163 ,  H03K17/168 ,  Y02B70/1491

Abstract: The present disclosure introduces a gate driver used to drive a power electronic switch of a commutation cell. The gate driver comprises a turn-off current source connected to a gate of the power electronic switch and an additional current source. The additional current source is in parallel to the turn-off current source of the gate driver and is configured to control a collector to emitter voltage variation at turn off of the power electronic switch. A circuit combining the gate driver with a commutation cell having a power electronic switch, a circuit combining a pair of gate drivers with a leg having two commutation cells including two power electronic switches and a converter including such circuits are also disclosed.