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14 条记录 (耗时 0.015 秒)

    Synchronous rectifier gate driver with active clamp
    1.
    发明授权
    Synchronous rectifier gate driver with active clamp 有权

    公开(公告)号：US10686361B2

    公开(公告)日：2020-06-16

    申请号：US16355649

    申请日：2019-03-15

    申请人： STMICROELECTRONICS S.R.L.

    发明人： Alberto Iorio ,  Maurizio Foresta

    IPC分类号： H02M1/08 ,  H02M3/335 ,  H02M3/337 ,  H02M1/00 ,  H02M1/34

    摘要： Various embodiments provide a resonant converter that includes a synchronous rectifier driver. The synchronous rectifier driver reduces voltage spikes on drains of transistors within the resonant converter by placing an active clamp between the drains of the transistors and an output terminal of the resonant converter. The active clamp reduces the voltage spikes by sinking current at the drains of the transistors to an output capacitor. By sinking the current to the output terminal, power loss is minimized and efficiency of the resonant converter is improved.

    CONTROL METHOD AND SYSTEM FOR PREVENTION OF CURRENT INVERSION IN RECTIFIERS OF SWITCHING CONVERTERS
    5.
    发明申请
    CONTROL METHOD AND SYSTEM FOR PREVENTION OF CURRENT INVERSION IN RECTIFIERS OF SWITCHING CONVERTERS 审中-公开

    公开(公告)号：US20200336071A1

    公开(公告)日：2020-10-22

    申请号：US16387142

    申请日：2019-04-17

    申请人： STMicroelectronics S.r.l.

    发明人： Alberto Iorio ,  Emilio Volpi ,  Jeanpierre Vicquery

    IPC分类号： H02M3/335 ,  H02M1/088

    摘要： A method of controlling synchronous rectification transistors in a switching converter includes sensing a drain-to-source voltage across each synchronous rectification transistor each switching half-cycle of the switching converter. An average of the sensed drain-to-source voltage is calculated for each synchronous rectification transistor over N prior switching half-cycles. A load current transient in the switching converter is sensed based on the sensed drain-to-source voltage of each synchronous rectification transistor and the calculated average of the sensed drain-to-source voltage for each synchronous rectification transistor over the N prior switching half-cycles.

    Control method for rectifier of switching converters
    7.
    发明授权
    Control method for rectifier of switching converters 有权
    开关变换器整流器的控制方法

    公开(公告)号：US09356535B2

    公开(公告)日：2016-05-31

    申请号：US14458078

    申请日：2014-08-12

    申请人： DORA S.p.A. ,  STMicroelectronics S.r.l.

    发明人： Alberto Iorio ,  Giuseppe Scappatura ,  Alberto Bianco ,  Claudio Adragna ,  Silvio De Simone ,  Maurizio Foresta

    IPC分类号： H02M7/217 ,  H02M3/335 ,  H02M1/00

    CPC分类号： H02M7/217 ,  H02M3/33507 ,  H02M3/33592 ,  H02M2001/0058 ,  Y02B70/1475 ,  Y02B70/1491

    摘要： A control device for a transistor of a switching converter rectifier generates a control signal of the transistor and includes a circuit to measure the conduction time of the body diode of the transistor cycle by cycle. When the conduction time is greater than a first threshold, the off time instant of the transistor is delayed by a first quantity in the next cycles, until the conduction time is less than the first threshold and greater than a second threshold. When the conduction time is between the first and second thresholds, the off time instant is delayed by a fixed second quantity in the next cycles until the conduction time is lower than the second threshold, with the second quantity less than the first quantity. When the conduction time is lower than the second threshold, the off time instant is advanced by the second quantity in the next cycle.

    摘要翻译： 用于开关转换器整流器的晶体管的控制装置产生晶体管的控制信号，并且包括用于逐周期地测量晶体管体二极管的导通时间的电路。 当导通时间大于第一阈值时，晶体管的截止时间瞬间在下一个周期中延迟第一量，直到导通时间小于第一阈值并大于第二阈值。 当导通时间在第一阈值和第二阈值之间时，关闭时刻在下一个周期中延迟固定的第二数量，直到导通时间低于第二阈值，第二数量小于第一数量。 当导通时间低于第二阈值时，关闭时刻在下一个周期中提前第二个数量。

    Control method and system for prevention of current inversion in rectifiers of switching converters
    8.
    发明授权
    Control method and system for prevention of current inversion in rectifiers of switching converters 有权

    公开(公告)号：US10819245B1

    公开(公告)日：2020-10-27

    申请号：US16387142

    申请日：2019-04-17

    申请人： STMicroelectronics S.r.l.

    发明人： Alberto Iorio ,  Emilio Volpi ,  Jeanpierre Vicquery

    IPC分类号： H02M3/335 ,  H02M1/088

    摘要： A method of controlling synchronous rectification transistors in a switching converter includes sensing a drain-to-source voltage across each synchronous rectification transistor each switching half-cycle of the switching converter. An average of the sensed drain-to-source voltage is calculated for each synchronous rectification transistor over N prior switching half-cycles. A load current transient in the switching converter is sensed based on the sensed drain-to-source voltage of each synchronous rectification transistor and the calculated average of the sensed drain-to-source voltage for each synchronous rectification transistor over the N prior switching half-cycles.

    Driver for a power field-effect transistor with a programmable drive voltage, and related systems and methods
    9.
    发明授权
    Driver for a power field-effect transistor with a programmable drive voltage, and related systems and methods 有权

    公开(公告)号：US10224824B2

    公开(公告)日：2019-03-05

    申请号：US15925456

    申请日：2018-03-19

    申请人： STMicroelectronics S.r.l.

    发明人： Alberto Iorio ,  Maurizio Foresta

    IPC分类号： H02M3/335 ,  H02M1/32 ,  H03K17/687 ,  H02M1/08 ,  H03K3/012 ,  H03K17/16 ,  H03K17/30

    摘要： A driver includes a high-side driver transistor coupled between supply voltage and the gate drive nodes and provides a first charge current to a high side gate node of the high-side driver transistor until the gate drive node reaches a first gate drive threshold. Then a second charge current is provided to the high side gate node that is less than the first charge current. The gate drive node is limited to a first clamped threshold for a delay time. A gate drive current rise signal sets the value of the second charge current that charges the high side gate node and after the delay time the gate drive voltage is limited to a second clamped threshold greater than the first clamped threshold but less than the supply voltage. A gate drive programmable control signal sets the value of the second clamped threshold.

    CONTROL METHOD FOR RECTIFIER OF SWITCHING CONVERTERS
    10.
    发明申请
    CONTROL METHOD FOR RECTIFIER OF SWITCHING CONVERTERS 有权
    开关变流器整流器的控制方法

    公开(公告)号：US20150049529A1

    公开(公告)日：2015-02-19

    申请号：US14458078

    申请日：2014-08-12

    申请人： DORA S.p.A. ,  STMicroelectronics S.r.l.

    发明人： Alberto Iorio ,  Giuseppe Scappatura ,  Alberto Bianco ,  Claudio Adragna ,  Silvio De Simone ,  Maurizio Foresta

    IPC分类号： H02M7/217 ,  H02M3/335

    CPC分类号： H02M7/217 ,  H02M3/33507 ,  H02M3/33592 ,  H02M2001/0058 ,  Y02B70/1475 ,  Y02B70/1491

    摘要： A control device for a transistor of a switching converter rectifier generates a control signal of the transistor and comprises a circuit to measure the conduction time of the body diode of the transistor cycle by cycle. When the conduction time is greater than a first threshold, the off time instant of the transistor is delayed by a first quantity in the next cycles, until the conduction time is less than the first threshold and greater than a second threshold. When the conduction time is between the first and second thresholds, the off time instant is delayed by a fixed second quantity in the next cycles until the conduction time is lower than the second threshold, with the second quantity less than the first quantity. When the conduction time is lower than the second threshold, the off time instant is advanced by the second quantity in the next cycle.

    摘要翻译： 用于开关转换器整流器的晶体管的控制装置产生晶体管的控制信号，并且包括用于逐周期地测量晶体管体二极管的导通时间的电路。 当导通时间大于第一阈值时，晶体管的截止时间瞬间在下一个周期中延迟第一量，直到导通时间小于第一阈值并大于第二阈值。 当导通时间在第一阈值和第二阈值之间时，关闭时刻在下一个周期中延迟固定的第二数量，直到导通时间低于第二阈值，第二数量小于第一数量。 当导通时间低于第二阈值时，关闭时刻在下一个周期中提前第二个数量。