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公开(公告)号：US20150049529A1
公开(公告)日：2015-02-19
申请号：US14458078
申请日：2014-08-12
Applicant: DORA S.p.A. , STMicroelectronics S.r.l.
Inventor： Alberto Iorio , Giuseppe Scappatura , Alberto Bianco , Claudio Adragna , Silvio De Simone , Maurizio Foresta
CPC classification number: H02M7/217 , H02M3/33507 , H02M3/33592 , H02M2001/0058 , Y02B70/1475 , Y02B70/1491
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US09356535B2
公开(公告)日：2016-05-31
申请号：US14458078
申请日：2014-08-12
Applicant: DORA S.p.A. , STMicroelectronics S.r.l.
Inventor： Alberto Iorio , Giuseppe Scappatura , Alberto Bianco , Claudio Adragna , Silvio De Simone , Maurizio Foresta
CPC classification number: H02M7/217 , H02M3/33507 , H02M3/33592 , H02M2001/0058 , Y02B70/1475 , Y02B70/1491
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US20150043249A1
公开(公告)日：2015-02-12
申请号：US14456908
申请日：2014-08-11
Applicant: DORA S.p.A.
Inventor： Alberto Iorio , Jeanpierre Vicquery
IPC: H02M3/335
CPC classification number: H02M3/33507 , H03K17/04123 , H03K17/133 , H03K17/162 , H03K17/302 , H03K2017/307
Abstract: A control device controls a rectifier of a switching converter that is supplied with an input voltage and provides an output current. The rectifier is configured to rectify the output current of the converter and has at least one transistor. The control device, when the at least one transistor is turned off, provides a slow discharge path to ground in a normal operation condition and provides a fast discharge path to ground for discharging the control terminal of the at least one transistor in response to detecting a zero cross event of the current flowing through said at least one transistor.
Abstract translation: 控制装置控制被提供有输入电压并提供输出电流的开关转换器的整流器。 整流器被配置为整流转换器的输出电流并具有至少一个晶体管。 当所述至少一个晶体管截止时，所述控制装置在正常操作状态下提供到地的缓慢放电路径，并且响应于检测到所述至少一个晶体管的控制端而向所述至少一个晶体管提供快速放电路径 流过所述至少一个晶体管的电流的零交叉事件。
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公开(公告)号：US09240728B2
公开(公告)日：2016-01-19
申请号：US14459159
申请日：2014-08-13
Applicant: DORA S.p.A.
Inventor： Alberto Iorio , Maurizio Foresta , Alberto Bianco
CPC classification number: H02M3/33576 , H02M3/1588 , H02M3/33592 , H02M2001/0058 , Y02B70/1425 , Y02B70/1433 , Y02B70/1466 , Y02B70/1475 , Y02B70/1491
Abstract: A control device detects zero crossings of a current through a rectifier transistor during plural cycles; generates a turn-on signal of the transistor and inserts a turn-on delay equal to a fixed first quantity from the start time of for each cycle. The control device starts counting consecutive cycles after inserting the turn-on delay; detects whether a zero crossing of the current through the transistor after turning on said transistor has occurred; if no zero crossing is detected before counting a number N of consecutive cycles, decreases the turn-on delay by a fixed second quantity for the next cycle; if a zero crossing is detected, maintains turned on the transistor; if the turn-on delay is smaller than first quantity, increases the turn-on delay o for the next switching cycle; and if the turn-on delay is equal to the first quantity, maintains the turn-on delay for the next switching cycle.
Abstract translation: 控制装置在多个周期期间检测通过整流器晶体管的电流的过零点; 产生晶体管的导通信号，并从每个周期的开始时间插入等于固定的第一量的导通延迟。 控制装置在插入接通延迟后开始连续循环计数; 检测在导通所述晶体管之后是否发生通过所述晶体管的电流的过零点; 如果在对连续循环数N进行计数之前没有检测到零交叉，则在下一个周期将导通延迟减少固定的第二数量; 如果检测到零交叉，维持导通晶体管; 如果导通延迟小于第一量，则增加下一个开关周期的导通延迟o; 并且如果导通延迟等于第一数量，则维持下一个开关周期的导通延迟。
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公开(公告)号：US20150049521A1
公开(公告)日：2015-02-19
申请号：US14459164
申请日：2014-08-13
Applicant: DORA S.p.A.
Inventor： Alberto Iorio , Maurizio Foresta
IPC: H02M3/335
CPC classification number: H02M3/33592 , H02M3/1588 , Y02B70/1466 , Y02B70/1475
Abstract: A control device for a rectifier of a switching converter that includes a rectifier with at least one MOS transistor and a control device that is configured to generate a turn on and off signal for the at least one transistor. The control device also includes a measuring circuit to measure the conduction time of the body diode of the at least one transistor during each converter switching half-cycle. The control device is configured to, cycle by cycle: verify if the drain-source voltage of the at least one transistor is greater or less than a voltage threshold, and if the drain-source voltage is greater than the voltage threshold to turn off the at least one transistor, measure the conduction time of the body diode and increase the voltage threshold by a quantity in the next switching cycle.
Abstract translation: 一种用于开关转换器的整流器的控制装置，其包括具有至少一个MOS晶体管的整流器和被配置为产生所述至少一个晶体管的导通和截止信号的控制装置。 控制装置还包括测量电路，用于在每个转换器切换半周期期间测量至少一个晶体管的体二极管的导通时间。 控制装置被配置成逐周期：验证至少一个晶体管的漏 - 源电压是否大于或小于电压阈值，并且如果漏 - 源电压大于电压阈值以关闭 至少一个晶体管测量体二极管的导通时间，并在下一个开关周期内将电压阈值增加一个量。
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Patent Agency Ranking
公开(公告)号：US09431912B2
公开(公告)日：2016-08-30
申请号：US14456908
申请日：2014-08-11
Applicant: DORA S.p.A.
Inventor： Alberto Iorio , Jeanpierre Vicquery
CPC classification number: H02M3/33507 , H03K17/04123 , H03K17/133 , H03K17/162 , H03K17/302 , H03K2017/307
Abstract: A control device controls a rectifier of a switching converter that is supplied with an input voltage and provides an output current. The rectifier is configured to rectify the output current of the converter and has at least one transistor. The control device, when the at least one transistor is turned off, provides a slow discharge path to ground in a normal operation condition and provides a fast discharge path to ground for discharging the control terminal of the at least one transistor in response to detecting a zero cross event of the current flowing through said at least one transistor.
Abstract translation: 控制装置控制被提供有输入电压并提供输出电流的开关转换器的整流器。 整流器被配置为整流转换器的输出电流并具有至少一个晶体管。 当所述至少一个晶体管截止时，所述控制装置在正常操作状态下提供到地的缓慢放电路径，并且响应于检测到所述至少一个晶体管的控制端而向所述至少一个晶体管提供快速放电路径 流过所述至少一个晶体管的电流的零交叉事件。
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公开(公告)号：US09209703B2
公开(公告)日：2015-12-08
申请号：US14459164
申请日：2014-08-13
Applicant: DORA S.p.A.
Inventor： Alberto Iorio , Maurizio Foresta
CPC classification number: H02M3/33592 , H02M3/1588 , Y02B70/1466 , Y02B70/1475
Abstract: A control device for a rectifier of a switching converter that includes a rectifier with at least one MOS transistor and a control device that is configured to generate a turn on and off signal for the at least one transistor. The control device also includes a measuring circuit to measure the conduction time of the body diode of the at least one transistor during each converter switching half-cycle. The control device is configured to, cycle by cycle: verify if the drain-source voltage of the at least one transistor is greater or less than a voltage threshold, and if the drain-source voltage is greater than the voltage threshold to turn off the at least one transistor, measure the conduction time of the body diode and increase the voltage threshold by a quantity in the next switching cycle.
Abstract translation: 一种用于开关转换器的整流器的控制装置，其包括具有至少一个MOS晶体管的整流器和被配置为产生所述至少一个晶体管的导通和截止信号的控制装置。 控制装置还包括测量电路，用于在每个转换器切换半周期期间测量至少一个晶体管的体二极管的导通时间。 控制装置被配置成逐周期：验证至少一个晶体管的漏 - 源电压是否大于或小于电压阈值，并且如果漏 - 源电压大于电压阈值以关闭 至少一个晶体管测量体二极管的导通时间，并在下一个开关周期内将电压阈值增加一个量。
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公开(公告)号：US20150049522A1
公开(公告)日：2015-02-19
申请号：US14459159
申请日：2014-08-13
Applicant: DORA S.p.A.
Inventor： Alberto Iorio , Maurizio Foresta , Alberto Bianco
IPC: H02M3/335
CPC classification number: H02M3/33576 , H02M3/1588 , H02M3/33592 , H02M2001/0058 , Y02B70/1425 , Y02B70/1433 , Y02B70/1466 , Y02B70/1475 , Y02B70/1491
Abstract: A control device detects zero crossings of a current through a rectifier transistor during plural cycles; generates a turn-on signal of the transistor and inserts a turn-on delay equal to a fixed first quantity from the start time of for each cycle. The control device starts counting consecutive cycles after inserting the turn-on delay; detects whether a zero crossing of the current through the transistor after turning on said transistor has occurred; if no zero crossing is detected before counting a number N of consecutive cycles, decreases the turn-on delay by a fixed second quantity for the next cycle; if a zero crossing is detected, maintains turned on the transistor; if the turn-on delay is smaller than first quantity, increases the turn-on delay o for the next switching cycle; and if the turn-on delay is equal to the first quantity, maintains the turn-on delay for the next switching cycle.
Abstract translation: 控制装置在多个周期期间检测通过整流器晶体管的电流的零交叉; 产生晶体管的导通信号，并从每个周期的开始时间插入等于固定的第一量的导通延迟。 控制装置在插入接通延迟后开始连续循环计数; 检测在导通所述晶体管之后是否发生通过所述晶体管的电流的过零点; 如果在对连续循环数N进行计数之前没有检测到零交叉，则在下一个周期将导通延迟减少固定的第二数量; 如果检测到零交叉，维持导通晶体管; 如果导通延迟小于第一量，则增加下一个开关周期的导通延迟o; 并且如果导通延迟等于第一数量，则维持下一个开关周期的导通延迟。
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公开(公告)号：US10686361B2
公开(公告)日：2020-06-16
申请号：US16355649
申请日：2019-03-15
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Alberto Iorio , Maurizio Foresta
Abstract: 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.
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10.发明申请公开(公告)号：US20180212524A1
公开(公告)日：2018-07-26
申请号：US15925456
申请日：2018-03-19
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Iorio , Maurizio Foresta
IPC: H02M3/335 , H03K17/687 , H02M1/08 , H03K3/012
CPC classification number: H02M3/33523 , H02M1/08 , H02M3/335 , H02M3/33592 , H03K3/012 , H03K17/163 , H03K17/687 , Y02B70/1433 , Y02B70/1475
Abstract: 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.
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