公开(公告)号：US20150381167A1

公开(公告)日：2015-12-31

申请号：US14552573

申请日：2014-11-25

申请人： THIERRY SICARD ,  PHILIPPE PERRUCHOUD

发明人： THIERRY SICARD ,  PHILIPPE PERRUCHOUD

IPC分类号： H03K17/687 ,  B60L11/18 ,  H02P27/06 ,  H02M1/088 ,  H02M7/25

CPC分类号： H03K17/687 ,  B60L11/1803 ,  H02P27/06

摘要： A gate drive circuit drives a control terminal of a power transistor and comprises: a drive terminal for electrically coupling the control terminal, a first reference source, a first switch arranged between the first reference source and the control terminal, a switch control circuit and a measurement circuit. The first switch is switched-on to turn-off the power transistor. The switch control circuit switches-off the first switch during a transition period to a fully off-state. The measurement circuit outputs a control signal to the switch control circuit in response to a value of a voltage at the control terminal measured when a discharge current flowing to the drive terminal has been reduced to a predetermined threshold, for switching-on the first switch if the measured value is smaller than a threshold voltage.

摘要翻译： 栅极驱动电路驱动功率晶体管的控制端子，包括：用于电耦合控制端子的驱动端子，第一参考源，布置在第一参考源和控制端子之间的第一开关，开关控制电路和 测量电路。 第一个开关接通以关断功率晶体管。 开关控制电路在过渡期间将第一开关切断至完全关断状态。 测量电路响应于当流过驱动端子的放电电流已经减小到预定阈值时测量的控制端子处的电压值，向开关控制电路输出控制信号，以便接通第一开关，如果 测量值小于阈值电压。

公开(公告)号：US20160149569A1

公开(公告)日：2016-05-26

申请号：US14899506

申请日：2013-07-04

申请人： Thierry SICARD ,  Philippe PERRUCHOUD

发明人： THIERRY SICARD ,  PHILIPPE PERRUCHOUD

IPC分类号： H03K17/567

CPC分类号： H03K17/567 ,  H02M7/5387 ,  H03K17/06

摘要： A gate drive circuit includes a first switch and a first capacitor. A first terminal of the first capacitor is electrically coupled to the first switch. The first switch is electrically coupled between the first terminal and a voltage supply of the power transistor. A second terminal of the first capacitor is electrically coupled to the reference potential. The gate drive circuit further includes a first voltage limiter in parallel with the first capacitor. The first voltage limiter limits a voltage across the first capacitor to a first predetermined voltage. The gate drive circuit further includes a second capacitor, a pre-charging circuit arranged between the first terminal of the first capacitor and a first terminal of the second capacitor. The gate drive circuit further includes a third capacitor with a first terminal electrically coupled to a second terminal of the second capacitor and a second terminal electrically coupled to a gate terminal of the power transistor.

摘要翻译： 栅极驱动电路包括第一开关和第一电容器。 第一电容器的第一端子电耦合到第一开关。 第一开关电耦合在第一端子和功率晶体管的电压源之间。 第一电容器的第二端子电耦合到参考电位。 栅极驱动电路还包括与第一电容器并联的第一限压器。 第一限压器将第一电容器两端的电压限制到第一预定电压。 栅极驱动电路还包括第二电容器，布置在第一电容器的第一端子和第二电容器的第一端子之间的预充电电路。 栅极驱动电路还包括具有电耦合到第二电容器的第二端子的第一端子的第三电容器和电耦合到功率晶体管的栅极端子的第二端子。

公开(公告)号：US20160149515A1

公开(公告)日：2016-05-26

申请号：US14899529

申请日：2013-07-04

申请人： THIERRY SICARD

发明人： THIERRY SICARD

IPC分类号： H02M7/5387 ,  H02M7/537 ,  H03K5/24 ,  H03K17/567 ,  H03K3/037

CPC分类号： H02M7/53871 ,  H02M1/08 ,  H02M7/537 ,  H02M7/5387 ,  H03K3/037 ,  H03K5/24 ,  H03K17/0406 ,  H03K17/04123 ,  H03K17/06 ,  H03K17/567 ,  H03K17/689

摘要： A gate drive circuit to drive a gate terminal of a power transistor. The gate drive circuit includes a first capacitor, a first switch, a measurement circuit and a reference source to generate a reference voltage. The first capacitor has a first terminal electrically coupled to the gate terminal of the power transistor. The first switch is arranged between a second terminal of the first capacitor and a first predetermined voltage. The measurement circuit is used to measure a differential voltage across the first capacitor. The gate drive circuit is configured to pre-charge the first capacitor to obtain a second predetermined voltage across the first capacitor. The gate drive circuit is further configured to arrange the first switch in an on state to turn on the power transistor and to electrically couple the first predetermined voltage to the second terminal of the first capacitor. The first capacitor is initially pre-charged at the second predetermined voltage.

摘要翻译： 驱动功率晶体管的栅极端的栅极驱动电路。 栅极驱动电路包括第一电容器，第一开关，测量电路和参考源，以产生参考电压。 第一电容器具有电耦合到功率晶体管的栅极端子的第一端子。 第一开关布置在第一电容器的第二端子和第一预定电压之间。 测量电路用于测量第一电容器两端的差分电压。 栅极驱动电路被配置为对第一电容器进行预充电以在第一电容器两端获得第二预定电压。 栅极驱动电路还被配置为将第一开关布置在导通状态以接通功率晶体管并将第一预定电压电耦合到第一电容器的第二端子。 第一电容器最初在第二预定电压下预充电。

公开(公告)号：US20160025802A1

公开(公告)日：2016-01-28

申请号：US14341286

申请日：2014-07-25

申请人： THIERRY SICARD

发明人： THIERRY SICARD

IPC分类号： G01R31/26

CPC分类号： G01R31/2608 ,  G01R31/2601

摘要： A driver circuit for testing a saturation level in an insulated gate bipolar transistor (“IGBT”) includes a comparator having a first input coupled to a reference voltage and a second input coupled to a saturation test node, and a first transistor having a first current electrode coupled to the first input of the comparator, a second current electrode coupled to a supply voltage, and a control electrode coupled to a first output of a test circuit. The first output is associated with a test initiation function of an internal test process. A second transistor has a first current electrode coupled to a control electrode of the IBGT transistor, a second current electrode coupled to the supply voltage, and a control electrode coupled to a second output of the test circuit. The second output is associated with an over-current indication of the internal test process.

摘要翻译： 用于测试绝缘栅双极晶体管（“IGBT”）中的饱和电平的驱动器电路包括具有耦合到参考电压的第一输入和耦合到饱和测试节点的第二输入的比较器，以及具有第一电流 电极，其耦合到比较器的第一输入端，耦合到电源电压的第二电流电极，以及耦合到测试电路的第一输出端的控制电极。 第一个输出与内部测试过程的测试启动功能相关联。 第二晶体管具有耦合到IBGT晶体管的控制电极的第一电流电极，耦合到电源电压的第二电流电极和耦合到测试电路的第二输出的控制电极。 第二个输出与内部测试过程的过流指示相关联。

公开(公告)号：US20160025800A1

公开(公告)日：2016-01-28

申请号：US14341269

申请日：2014-07-25

申请人： THIERRY SICARD

发明人： THIERRY SICARD

IPC分类号： G01R31/26

CPC分类号： G01R31/2608 ,  G01R35/00 ,  H01L29/7393 ,  H03K17/0822 ,  H03K2217/0027

摘要： A saturation edge detection circuit for testing a saturation level in an insulated gate bipolar transistor (“IGBT”) includes a first input operable to receive an on signal, a second input coupled to an IGBT driver circuit, and an output coupled to a control electrode of the IGBT. The output indicates a change in a state of a saturation voltage associated with the IGBT during operation of the IGBT.

摘要翻译： 用于测试绝缘栅双极晶体管（“IGBT”）中的饱和电平的饱和边缘检测电路包括可操作以接收导通信号的第一输入端，耦合到IGBT驱动器电路的第二输入和耦合到控制电极的输出 的IGBT。 输出表示IGBT工作时与IGBT相关的饱和电压的状态的变化。

公开(公告)号：US20150316602A1

公开(公告)日：2015-11-05

申请号：US13882710

申请日：2013-01-09

申请人： RANDALL C. GRAY ,  IBRAHIM S. KANDAH ,  PHILIPE J. PERRUCHOUD ,  JOHN M. PIGOTT ,  THIERRY SICARD

发明人： RANDALL C. GRAY ,  IBRAHIM S. KANDAH ,  PHILIPE J. PERRUCHOUD ,  JOHN M. PIGOTT ,  THIERRY SICARD

IPC分类号： G01R31/26

CPC分类号： G01R31/2608 ,  G01R31/261 ,  G01R31/3274 ,  H01H9/00

摘要： Operation of an insulated gate bipolar transistor (IGBT) is monitored by an apparatus that has a capacitor connected between a collector of the IGBT and an input node. A processing circuit, coupled to the input node, responds to current flowing through the capacitor by providing an indication whether a voltage level at the collector is changing and the rate of that change. The processing circuit also employs the capacitor current to provide an output voltage that indicates the voltage at the IGBT collector.

摘要翻译： 绝缘栅双极晶体管（IGBT）的工作由具有连接在IGBT的集电极和输入节点之间的电容器的装置来监视。 耦合到输入节点的处理电路通过提供收集器上的电压电平是否正在改变以及该变化的速率的指示来响应流过电容器的电流。 处理电路还采用电容器电流来提供指示IGBT集电极电压的输出电压。

公开(公告)号：US20160065102A1

公开(公告)日：2016-03-03

申请号：US14470027

申请日：2014-08-27

申请人： THIERRY SICARD

发明人： THIERRY SICARD

IPC分类号： H02P6/14

CPC分类号： H03K17/18 ,  H02P27/08 ,  H03K2217/0063 ,  H03K2217/0072

摘要： A driver circuit for driving a portion of a motor system is disclosed. The driver circuit may include a current reverse detector operable to detect a current direction associated with the portion of the motor system, an insulated gate bipolar transistor (“IGBT”) driver, and an IGBT. The IGBT driver may include: a first input coupled to an output of the current reverse detector and a second input coupled to an operation indication signal.

摘要翻译： 公开了一种用于驱动电机系统的一部分的驱动电路。 驱动器电路可以包括电流反向检测器，其可操作以检测与电动机系统的部分相关的电流方向，绝缘栅双极晶体管（“IGBT”）驱动器和IGBT。 IGBT驱动器可以包括：耦合到当前反向检测器的输出的第一输入和耦合到操作指示信号的第二输入。

公开(公告)号：US20130021191A1

公开(公告)日：2013-01-24

申请号：US13186106

申请日：2011-07-19

申请人： THIERRY SICARD

发明人： THIERRY SICARD

IPC分类号： H03M1/12 ,  H03L5/00

CPC分类号： H03M1/403

摘要： Systems and methods are provided for converting analog data to digital data that can include a discharge capacitor coupled to a voltage source. The voltage source supplies an initial data charge to the discharge capacitor; an amplifier coupled to the discharge capacitor; a divider circuit coupled to the amplifier; and a comparator coupled to the amplifier and the divider circuit. The divider circuit includes a first capacitor, a second capacitor, and a switch that is operated to alternately divide a remaining charge Q by 2N using the first and second capacitors until the remaining data charge Qin at the amplifier is below a threshold value in the process of converting analog data to digital data.

摘要翻译： 提供了用于将模拟数据转换成数字数据的系统和方法，数字数据可以包括耦合到电压源的放电电容器。 电压源向放电电容器提供初始数据电荷; 耦合到放电电容器的放大器; 耦合到放大器的分频器电路; 以及耦合到放大器和分频器电路的比较器。 除法器电路包括第一电容器，第二电容器和开关，其操作以使用第一和第二电容器将剩余电荷Q交替地分开2N，直到放大器中的剩余数据电荷Qin在该过程中低于阈值 将模拟数据转换为数字数据。

公开(公告)号：US20130021190A1

公开(公告)日：2013-01-24

申请号：US13186091

申请日：2011-07-19

申请人： THIERRY SICARD

发明人： THIERRY SICARD

IPC分类号： H03M1/12

CPC分类号： H03M1/403

摘要： Systems and methods are provided for converting analog data to digital data that can include performing N successive analog subtractions from an initial data charge Qin. The analog subtractions are performed using an amplifier coupled to a discharge capacitor and a divider circuit coupled to an input of the amplifier. The divider circuit includes a first capacitor, a second capacitor, and a switch to alternately divide a remaining charge Q by 2N between the first and second capacitors until the remaining charge Qin at the amplifier is below a threshold value. A compensating circuit compensates for fluctuations in the charge held by the first and second capacitors due to operation of the switch.

摘要翻译： 提供了用于将模拟数据转换成数字数据的系统和方法，数字数据可以包括从初始数据电荷Qin执行N个连续的模拟减法。 使用耦合到放电电容器的放大器和耦合到放大器的输入端的分频器电路来执行模拟减法。 分频器电路包括第一电容器，第二电容器和开关，用于在第一和第二电容器之间交替地将剩余电荷Q除以​​2N，直到放大器处的剩余电荷Qin低于阈值。 补偿电路由于开关的操作而补偿由第一和第二电容器保持的电荷的波动。