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21. 发明申请

US20050017760A1 Current sense shunt resistor circuit 审中-公开
标题翻译：电流检测分流电阻电路
公开(公告)号：US20050017760A1
公开(公告)日：2005-01-27
申请号：US10625029
申请日：2003-07-22
申请人： Massimo Grasso , Aldo Torti , Andrea Merello , Jonas Aleksandravicius
发明人： Massimo Grasso , Aldo Torti , Andrea Merello , Jonas Aleksandravicius
IPC分类号： G01R1/20 , G01R19/00 , H03D1/00
CPC分类号： G01R19/0092 , G01R1/203
摘要： Current through a wire is sensed with a shunt resistor and a sense resistor in a current divider circuit. The values of the shunt resistor and sense resistor are related to provide a specified gain ratio to increase a dynamic range of current measurement. The sense resistor is a trimmable resistor, the configuration of which can be discerned from a look-up table based on a level of precision needed for current measurement. The two resistors can also be related by thermal coefficients to improve linearity of current measurements.
摘要翻译：通过分流电路中的分流电阻和检测电阻来检测通过导线的电流。分流电阻和检测电阻的值与提供规定的增益比相关联，以增加电流测量的动态范围。检测电阻是可调节的电阻器，其配置可以基于电流测量所需的精度水平从查找表中辨别出来。两个电阻也可以通过热系数相关联，以提高电流测量的线性度。

22. 发明授权

US5703476A Reference voltage generator, having a double slope temperature characteristic, for a voltage regulator of an automotive alternator 失效
标题翻译：具有双斜率温度特性的参考电压发生器，用于汽车交流发电机的电压调节器
公开(公告)号：US5703476A
公开(公告)日：1997-12-30
申请号：US674321
申请日：1996-07-01
申请人： Mauro Merlo , Franco Cocetta , Fabio Marchio , Massimo Grasso , Bruno Murari
发明人： Mauro Merlo , Franco Cocetta , Fabio Marchio , Massimo Grasso , Bruno Murari
IPC分类号： G05F1/46 , G05F3/22 , H02J7/14 , G05F3/16
CPC分类号： G05F1/463 , G05F3/225 , H02J7/1453 , Y10S323/907
摘要： A reference voltage generator having a dual slope temperature characteristic, for use in an automotive alternator voltage regulator, comprises a bandgap circuit (R1,R2,R3,R4) which generates a voltage (A) having a thermal drift coefficient of zero and a voltage (B) having a non-zero thermal drift coefficient. These voltages are applied to a voltage divider (R5,R6) and a voltage-follower type of circuit (OPA1). A unidirectional conduction amplifier circuit (OPA2) has an input terminal connected to an intermediate point (C) on the voltage divider. A second voltage divider (R7,R8) is connected between the output terminals of the voltage-follower circuit (D) and the amplifier circuit (E) . An intermediate node (F) of the second voltage divider is coupled to an output terminal (VREF) of the generator.
摘要翻译：具有用于汽车交流发电机电压调节器的双斜率温度特性的参考电压发生器包括产生具有热漂移系数为零的电压（A）的带隙电路（R1，R2，R3，R4）和电压（B）具有非零热漂移系数。这些电压被施加到分压器（R5，R6）和电压跟随器类型的电路（OPA1）。单向导通放大器电路（OPA2）具有连接到分压器上的中间点（C）的输入端子。第二分压器（R7，R8）连接在电压跟随器电路（D）的输出端子和放大器电路（E）之间。第二分压器的中间节点（F）耦合到发生器的输出端子（VREF）。

23. 发明授权

US07719223B2 Switching node based sensorless motor control for PM motor 有权
标题翻译： PM电机的基于开关节点的无传感器电机控制
公开(公告)号：US07719223B2
公开(公告)日：2010-05-18
申请号：US11683150
申请日：2007-03-07
申请人： Massimo Grasso , Andrea (Francesco) Merello , Christian Locatelli
发明人： Massimo Grasso , Andrea (Francesco) Merello , Christian Locatelli
IPC分类号： G05B11/28
CPC分类号： H02P6/182
摘要： A circuit for indirectly measuring a sign of a current flowing in an inverter stage coupled to a phase of a motor or indirectly measuring the sign of the voltage induced by a counter Electromotive Force (EMF) in a coil of the phase of the motor, the inverter stage being connected between a power supply and the ground. The circuit includes a gate driver circuit coupled to the inverter stage for alternatively connecting the phase of the motor to the power supply and to ground, the gate driver circuit having a current sign detection circuit, wherein the current sign detection circuit senses the sign of the current flowing in the inverter stage, or the sign of the counter EMF for controlling the commutation of switches in the inverter stage.
摘要翻译：一种电路，用于间接测量在与电动机的相位耦合的逆变器级中流动的电流的符号，或间接地测量由电动机相的线圈中的计数器电动势（EMF）引起的电压的符号，变频器级连接在电源和地之间。电路包括耦合到逆变器级的栅极驱动器电路，用于将电动机的相位交替地连接到电源和接地，栅极驱动器电路具有电流符号检测电路，其中电流符号检测电路感测到在逆变器级中流动的电流，或用于控制逆变器级中的开关换向的计数器EMF的符号。

24. 发明申请

US20080297212A1 START-UP CIRCUITY FOR PROVIDING A START-UP VOLTAGE TO AN APPLICATION CIRCUIT 有权
标题翻译：用于向应用电路提供启动电压的启动电路
公开(公告)号：US20080297212A1
公开(公告)日：2008-12-04
申请号：US12190811
申请日：2008-08-13
申请人： Massimo Grasso , Sergio Morini
发明人： Massimo Grasso , Sergio Morini
IPC分类号： G05F3/16
CPC分类号： H02M3/335 , H02M1/36 , Y10S323/901
摘要： A startup circuit for providing a startup voltage from a high voltage DC bus voltage to an application circuit, the startup circuit comprising an integrated circuit package for at least a control circuit for driving at least one power switch of the application circuit having a low voltage terminal; a dropping resistor in the integrated circuit package having a first terminal for coupling to the high voltage DC bus and a second terminal, the dropping resistor dropping the high voltage DC bus voltage to a reduced voltage and providing the reduced voltage at the second terminal; further comprising a low voltage regulator coupled to the second terminal for using the reduced voltage for enabling generation of a regulated startup low voltage DC output at a preset level at the low voltage terminal for powering at least one part of the application circuit during startup of the application circuit, wherein the high voltage DC bus voltage is the only voltage source provided externally to the integrated circuit package.
摘要翻译：一种用于将高压DC总线电压的启动电压提供给应用电路的启动电路，所述启动电路包括用于至少一个用于驱动具有低电压端子的应用电路的至少一个电源开关的控制电路的集成电路封装 ; 所述集成电路封装中具有用于耦合到高压DC总线的第一端子和第二端子的降压电阻器，所述降压电阻器将所述高压DC总线电压降低到降低的电压并在所述第二端子处提供降低的电压; 还包括耦合到所述第二端子的低电压调节器，用于使用所述降低的电压，以在所述低电压端子处能够在预定电平下产生调节的启动低压DC输出，以在所述低电压端子的启动期间向所述应用电路的至少一部分供电应用电路，其中高压DC总线电压是在集成电路封装外部提供的唯一电压源。

25. 发明申请

US20070212034A1 SWITCHING NODE BASED SENSORLESS MOTOR CONTROL FOR PM MOTOR 有权
标题翻译：基于节点转换的无电机马达控制
公开(公告)号：US20070212034A1
公开(公告)日：2007-09-13
申请号：US11683150
申请日：2007-03-07
申请人： Massimo Grasso , Andrea (Francesco) Merello , Christian Locatelli
发明人： Massimo Grasso , Andrea (Francesco) Merello , Christian Locatelli
IPC分类号： H02P7/288
CPC分类号： H02P6/182
摘要： A circuit for indirectly measuring a sign of a current flowing in an inverter stage coupled to a phase of a motor or indirectly measuring the sign of the voltage induced by a counter Electromotive Force (EMF) in a coil of the phase of the motor, the inverter stage being connected between a power supply and the ground. The circuit includes a gate driver circuit coupled to the inverter stage for alternatively connecting the phase of the motor to the power supply and to ground, the gate driver circuit having a current sign detection circuit, wherein the current sign detection circuit senses the sign of the current flowing in the inverter stage, or the sign of the counter EMF for controlling the commutation of switches in the inverter stage.
摘要翻译：一种电路，用于间接测量在与电动机的相位耦合的逆变器级中流动的电流的符号，或间接地测量由电动机相的线圈中的计数器电动势（EMF）引起的电压的符号，变频器级连接在电源和地之间。电路包括耦合到逆变器级的栅极驱动器电路，用于将电动机的相位交替地连接到电源和接地，栅极驱动器电路具有电流符号检测电路，其中电流符号检测电路感测到在逆变器级中流动的电流，或用于控制逆变器级中的开关换向的计数器EMF的符号。

26. 发明申请

US20060044854A1 Low switching frequency power factor correction circuit 有权
标题翻译：低开关频率功率因数校正电路
公开(公告)号：US20060044854A1
公开(公告)日：2006-03-02
申请号：US11145683
申请日：2005-06-06
申请人： Cesare Bocchiola , Massimo Grasso , Toshio Takahashi
发明人： Cesare Bocchiola , Massimo Grasso , Toshio Takahashi
IPC分类号： H02M7/04
CPC分类号： H02M1/4225 , H02M1/4208 , Y02B70/126
摘要： A power factor correction circuit for driving a switch of a boost type converter circuit having an AC line frequency input, comprising a sense circuit for sensing and comparing the output voltage of the boost type converter circuit to a reference voltage, a circuit responsive to the output of the sense circuit for providing a drive signal for driving the switch, wherein the drive signal comprises a pulsed signal comprising a pulse grouping during each half cycle of the AC line frequency comprising at least one pulse wherein the number of pulses and frequency of the pulses of the pulse grouping changes with the output of the sense circuit up to a threshold value with the pulse width of the pulses being substantially constant; and when the output of the sense circuit has reached the threshold value, the pulse width of the pulses of the pulse grouping are varied in accordance with the output of the sense circuit.
摘要翻译：一种用于驱动具有AC线路频率输入的升压型转换器电路的开关的功率因数校正电路，包括用于感测和比较升压型转换器电路的输出电压与参考电压的感测电路，响应于输出的电路用于提供用于驱动开关的驱动信号的感测电路，其中所述驱动信号包括脉冲信号，所述脉冲信号包括在包括至少一个脉冲的每个半周期期间的脉冲分组，其中脉冲数和脉冲频率脉冲组合的脉冲宽度随着脉冲的脉冲宽度基本恒定而随着感测电路的输出而变化到阈值，并且当感测电路的输出达到阈值时，脉冲组合的脉冲的脉冲宽度根据感测电路的输出而变化。

27. 发明授权

US06828753B2 Input filter for A.C. motor phase current sensing 有权
公开(公告)号：US06828753B2
公开(公告)日：2004-12-07
申请号：US10644666
申请日：2003-08-20
申请人： Massimo Grasso , Sergio Morini , Alessandro Rugginenti
发明人： Massimo Grasso , Sergio Morini , Alessandro Rugginenti
IPC分类号： H02P534
CPC分类号： H02M7/53875 , G01R31/343 , H02M2001/0009
摘要： An input filter to block noise components of motor phase current used as an input signal for a PWM motor controller. The input filter includes an integration circuit driven by a triggering signal at a frequency which is twice the frequency of operation of the inverter. In one embodiment, a first integrator is coupled directly to the motor drive current signal, and a second integrator is coupled to the motor drive current signal through a circuit which introduces a delay equal to the period of the triggering signal. The difference between the outputs of the integrators is then sampled at the triggering signal frequency. In a second embodiment, a voltage-to-time converter generates a first ramp representing the integral of the phase current signal during a first triggering interval, and a second ramp representing the integral of a reference signal, is subtracted from the value of the first ramp during a second triggering interval until value of integrator output returns to zero. In a third embodiment, a switched capacitor integration circuit is operated by a high speed clock synchronized to the triggering signal. The integrator output is sampled at the end of each triggering period and coupled to an analog to digital converter.

28. 发明授权

US06809571B2 Power control circuit with active impedance to avoid interference and sensing problems 有权
标题翻译：功率控制电路具有有源阻抗，以避免干扰和感测问题
公开(公告)号：US06809571B2
公开(公告)日：2004-10-26
申请号：US09966091
申请日：2001-10-01
申请人： Massimo Grasso , Giovanni Galli
发明人： Massimo Grasso , Giovanni Galli
IPC分类号： H03K1730
CPC分类号： H03K17/0822
摘要： A power control circuit includes sensing circuitry for sensing information about operation of a power device such as an IGBT or other power FET. The sensing circuitry receives a sense input signal from the power device through a gating device such as a diode. The power control circuit also includes active impedance circuitry for preventing the sense input signal from including spurious information received from the gating device. For example, if the gating device is a diode across which negative spikes can be capacitively coupled, the active impedance circuitry can prevent the negative spikes from reaching the sensing circuitry when the diode is off. The active impedance circuitry can take the form of a transistor connected between a power supply and a sensing node. The active impedance device can be switched on by a comparator when the voltage across the power device exceeds a reference voltage, indicating the power device is off. Alternatively, the active impedance device can be controlled by a comparator in the sensing circuitry that provides an output that similarly indicates whether the power device is on or off. The sensing circuitry and active impedance circuitry can be implemented on an integrated circuit.
摘要翻译：功率控制电路包括用于感测关于诸如IGBT或其他功率FET的功率器件的操作的信息的感测电路。感测电路通过诸如二极管的选通装置接收来自功率器件的感测输入信号。功率控制电路还包括有源阻抗电路，用于防止感测输入信号包括从门控装置接收的寄生信息。例如，如果选通装置是可以电容耦合负极尖峰的二极管，则当二极管关断时，有源阻抗电路可以防止负尖峰到达感测电路。有源阻抗电路可以采取连接在电源和感测节点之间的晶体管的形式。当功率器件两端的电压超过参考电压时，可以通过比较器接通有源阻抗器件，指示电源设备关闭。或者，有源阻抗装置可以由感测电路中的比较器来控制，该比较器提供类似地指示电力装置是打开还是关闭的输出。感测电路和有源阻抗电路可以在集成电路上实现。

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