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公开(公告)号：US11228239B2
公开(公告)日：2022-01-18
申请号：US16858907
申请日：2020-04-27
Applicant: STMicroelectronics (Tours) SAS , STMicroelectronics LTD
Inventor： Ghafour Benabdelaziz , Laurent Gonthier
Abstract: An AC capacitor is coupled to a totem-pole type PFC circuit. In response to detection of a power input disconnection, the PFC circuit is controlled to discharge the AC capacitor. The PFC circuit includes a resistor and a first MOSFET and a second MOSFET coupled in series between DC output nodes with a common node coupled to the AC capacitor. When the disconnection event is detected, one of the first and second MOSFETs is turned on to discharge the AC capacitor with a current flowing through the resistor and the turned on MOSFET. Furthermore, a thyristor may be simultaneously turned on, with the discharge current flowing through a series coupling of the MOSFET, resistor and thyristor. Disconnection is detected by detecting a zero-crossing failure of an AC power input voltage or lack of input voltage decrease or input current increase in response to MOSFET turn on for a DC input.
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公开(公告)号：US11936288B2
公开(公告)日：2024-03-19
申请号：US17548754
申请日：2021-12-13
Applicant: STMicroelectronics (Tours) SAS , STMicroelectronics LTD
Inventor： Ghafour Benabdelaziz , Laurent Gonthier
CPC classification number: H02M1/4208 , H02M7/1557 , H02M7/217 , H02M1/322
Abstract: An AC capacitor is coupled to a totem-pole type PFC circuit. In response to detection of a power input disconnection, the PFC circuit is controlled to discharge the AC capacitor. The PFC circuit includes a resistor and a first MOSFET and a second MOSFET coupled in series between DC output nodes with a common node coupled to the AC capacitor. When the disconnection event is detected, one of the first and second MOSFETs is turned on to discharge the AC capacitor with a current flowing through the resistor and the turned on MOSFET. Furthermore, a thyristor may be simultaneously turned on, with the discharge current flowing through a series coupling of the MOSFET, resistor and thyristor. Disconnection is detected by detecting a zero-crossing failure of an AC power input voltage or lack of input voltage decrease or input current increase in response to MOSFET turn on for a DC input.
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公开(公告)号：US10686388B2
公开(公告)日：2020-06-16
申请号：US16362939
申请日：2019-03-25
Applicant: STMicroelectronics (Tours) SAS , STMicroelectronics S.r.l.
Inventor： Laurent Gonthier , Roberto Larosa , Giulio Zoppi
Abstract: An AC/DC converter includes a first terminal and a second terminal to receive an AC voltage and a third terminal and a fourth terminal to deliver a DC voltage. A rectifying bridge is provided in the converter. A controllable switching or rectifying element has a control terminal configured to receive a control current. A first switch is coupled between a supply voltage and the control terminal to inject the control current. A second switch is coupled between the control terminal and a reference voltage to extract the control current. The first and second switches are selectively actuated by a control circuit.
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公开(公告)号：US09667130B2
公开(公告)日：2017-05-30
申请号：US14962008
申请日：2015-12-08
Applicant: STMicroelectronics (Tours) SAS , STMicroelectronics, Inc.
Inventor： Laurent Gonthier , Muriel Nina , Jurgis Astrauskas
CPC classification number: H02M1/32 , H02H1/043 , H02H9/001 , H02H9/002 , H02M1/10 , H02M1/36 , H02M7/125 , H02M7/515 , H02M2001/325
Abstract: An AC/DC converter includes a first terminal and a second terminal for receiving an AC voltage and a third terminal and a fourth terminal for delivering a DC voltage. A capacitive circuit is connected between the third and fourth terminals. A rectifying bridge circuit has input terminals respectively coupled to the first and second terminals and has output terminal respectively connected to the third and fourth terminals. An inductive element is coupled in series with a first switch circuit between the first terminal and an input terminal of the rectifying bridge circuit.
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公开(公告)号：US20160301298A1
公开(公告)日：2016-10-13
申请号：US14956660
申请日：2015-12-02
Applicant: STMicroelectronics (Tours) SAS
Inventor： Laurent Gonthier , Muriel Nina
CPC classification number: H02M1/32 , H02M1/36 , H02M7/062 , H02M7/125 , H02M7/162 , H02M7/515 , H02M2001/325
Abstract: An AC/DC converter receives an AC voltage at a first terminal and a second terminal. A rectifying bridge has a first input terminal coupled via a resistive element to the first terminal and a second input terminal connected to the second terminal, with output terminals of the rectifying bridge coupled to third and fourth terminals of the converter for generating a DC voltage. A first controllable rectifying thyristor couples the first terminal to the third terminal and a second controllable rectifying thyristor couples the fourth terminal to the first terminal. The resistive element functions as an inrush protection device during a first phase when the thyristors are turned off. In a second phase, the thyristors are selectively actuated.
Abstract translation: AC / DC转换器在第一端子和第二端子处接收AC电压。 整流桥具有经由电阻元件耦合到第一端子的第一输入端子和连接到第二端子的第二输入端子，整流桥的输出端子耦合到转换器的第三和第四端子，用于产生直流电压。 第一可控整流晶闸管将第一端子耦合到第三端子，而第二可控整流晶闸管将第四端子耦合到第一端子。 当晶闸管关断时，电阻元件在第一阶段用作浪涌保护器件。 在第二阶段中，选择性地致动晶闸管。
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Patent Agency Ranking
公开(公告)号：US10284107B2
公开(公告)日：2019-05-07
申请号：US14956543
申请日：2015-12-02
Applicant: STMicroelectronics (Tours) SAS , STMicroelectronics S.r.l.
Inventor： Laurent Gonthier , Roberto Larosa , Giulio Zoppi
Abstract: An AC/DC converter includes a first terminal and a second terminal to receive an AC voltage and a third terminal and a fourth terminal to deliver a DC voltage. A rectifying bridge is provided in the converter. A controllable switching or rectifying element has a control terminal configured to receive a control current. A first switch is coupled between a supply voltage and the control terminal to inject the control current. A second switch is coupled between the control terminal and a reference voltage to extract the control current. The first and second switches are selectively actuated by a control circuit.
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公开(公告)号：US09979298B2
公开(公告)日：2018-05-22
申请号：US15157711
申请日：2016-05-18
Applicant: STMicroelectronics S.r.l. , STMicroelectronics (Tours) SAS
Inventor： Roberto Larosa , Giulio Zoppi , Laurent Gonthier
CPC classification number: H02M3/33507 , H02M1/08 , H02M1/081 , H02M1/36 , H02M1/42 , H02M7/062 , H02M7/125 , H02M2001/0006
Abstract: A rectifier bridge circuit includes a first SCR/IGBT switch and a second SCR/IGBT switch coupled to a circuit input to receive an ac input voltage. The first and second SCR/IGBT switches are alternatively switchable to generate a rectified voltage at a circuit output. Control currents coupled to control terminals of the first and second SCR/IGBT switches are power supply sourced from an auxiliary dc source generated by rectifying the ac input voltage. The control currents are generated by current sources coupled between the auxiliary dc source and the control terminals of the first and second SCR/IGBT switches. The current sources are selectively activatable to produce gating currents for switching on and off the first and second SCR/IGBT switches. A controller unit is provided to control the current sources via level shifter circuits. The control implements progressive conduction time of the first and second SCR/IGBT switches so as to provide inrush current limitation.
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公开(公告)号：US09912249B2
公开(公告)日：2018-03-06
申请号：US15140163
申请日：2016-04-27
Applicant: STMicroelectronics (Tours) SAS
Inventor： Ghafour Benabdelaziz , Laurent Gonthier
Abstract: A rectifying circuit including: between a first terminal of application of an AC voltage and a first rectified voltage delivery terminal, at least one first diode; and between a second terminal of application of the AC voltage and a second rectified voltage delivery terminal, at least one first anode-gate thyristor, the anode of the first thyristor being connected to the second rectified voltage delivery terminal; and at least one first stage for controlling the first thyristor, including: a first transistor coupling the thyristor gate to a terminal of delivery of a potential which is negative with respect to the potential of the second rectified voltage delivery terminal; and a second transistor connecting a control terminal of the first transistor to a terminal for delivering a potential which is positive with respect to the potential of the second rectified voltage delivery terminal, the anode of the first thyristor being connected to the common potential of voltages defined by said positive and negative potentials.
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公开(公告)号：US09755541B2
公开(公告)日：2017-09-05
申请号：US14956482
申请日：2015-12-02
Applicant: STMicroelectronics (Tours) SAS
Inventor： Laurent Gonthier , Muriel Nina , Romain Pichon
CPC classification number: H02M7/162 , H02M1/081 , H02M7/062 , H02M7/125 , H02M7/1623
Abstract: An AC/DC converter includes: a first terminal and a second terminal for receiving an AC voltage and a third terminal and a fourth terminal for supplying a DC voltage. A rectifying bridge includes input terminals respectively coupled to the first terminal and the second terminal, and output terminals respectively coupled to the third terminal and fourth terminal. A first branch of the rectifying bridge includes, connected between the output terminals, two series-connected thyristors with a junction point of the two thyristors being connected to a first one of the input terminals. A second branch of the rectifying bridge is formed by series connected diodes. A control circuit is configured to generate control signals for application to the control gates of the thyristors.
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公开(公告)号：US20160301326A1
公开(公告)日：2016-10-13
申请号：US14956482
申请日：2015-12-02
Applicant: STMicroelectronics (Tours) SAS
Inventor： Laurent Gonthier , Muriel Nina , Romain Pichon
IPC: H02M7/162
CPC classification number: H02M7/162 , H02M1/081 , H02M7/062 , H02M7/125 , H02M7/1623
Abstract: An AC/DC converter includes: a first terminal and a second terminal for receiving an AC voltage and a third terminal and a fourth terminal for supplying a DC voltage. A rectifying bridge includes input terminals respectively coupled to the first terminal and the second terminal, and output terminals respectively coupled to the third terminal and fourth terminal. A first branch of the rectifying bridge includes, connected between the output terminals, two series-connected thyristors with a junction point of the two thyristors being connected to a first one of the input terminals. A second branch of the rectifying bridge is formed by series connected diodes. A control circuit is configured to generate control signals for application to the control gates of the thyristors.
Abstract translation: AC / DC转换器包括：用于接收AC电压的第一端子和第二端子，以及用于提供DC电压的第三端子和第四端子。 整流桥包括分别耦合到第一端子和第二端子的输入端子以及分别耦合到第三端子和第四端子的输出端子。 整流桥的第一分支包括连接在输出端子之间的两个串联连接的晶闸管，两个晶闸管的一个接点连接到第一个输入端。 整流桥的第二分支由串联连接的二极管形成。 控制电路被配置为产生用于施加到晶闸管的控制栅极的控制信号。
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