公开(公告)号：US4972130A

公开(公告)日：1990-11-20

申请号：US435889

申请日：1989-11-14

申请人： Domenico Rossi ,  Andrea Cuomo ,  Giovanni Pietrobon

发明人： Domenico Rossi ,  Andrea Cuomo ,  Giovanni Pietrobon

IPC分类号： H02P8/12 ,  H02P7/00 ,  H03K17/687 ,  H03K17/693 ,  H03K17/695

CPC分类号： H03K17/6871 ,  H02P7/04 ,  H03K17/693

摘要： A multipurpose integrated circuit for driving in a switching mode an externally connected load or loads permits implementation of any appropriate supply scheme of the external load or loads through six output terminals thereof and is therefore useful in a large number of applications. The integrated circuit uses six integrated power switching devices provided with respective recirculation diodes and a single externally connected sensing resistor for generating, by means of a customary PWM control loop, a control signal by which means of a logic circuit configurable by progrmaming permits the generation of driving signals as a function of the control signal for all six integrated power switches in accordance with a configuration of the driving signals which conforms with the particular scheme of connection of the load or loads selected among the different bridge type and unipolar-motor type schemes which may be selected by programming. A multiplexer is used for selecting among bridge type driving signals and unipolar-motor type driving modes and a ROM provided with two input registers for selecting the specific driving scheme and for regulation, respectively.

公开(公告)号：US4879641A

公开(公告)日：1989-11-07

申请号：US263935

申请日：1988-10-28

申请人： Domenico Rossi ,  Andrea Cuomo

发明人： Domenico Rossi ,  Andrea Cuomo

IPC分类号： H02M7/5387 ,  H02P7/00

CPC分类号： H02M7/53871 ,  H02P7/04 ,  H02M2003/1555

摘要： A circuit for sensing the magnitude and sense of a current flowing through the load of an H-bridge stage driving the load in a switching mode by means of a clocked, square-wave driving signal and the inverted signal thereof applied, respectively, to two pairs of analog switches arranged in a bridge configuration and functionally switching the load between a supply node and a virtual ground node is made by utilizing a single sensing resistance connected between the virtual ground node and the real ground node of the circuit, the signal across the resistance and the inverted signal thereof are fed to two inputs of an analog multiplex whose output signal is fed to the input of a comparator in order to obtain at the output of the latter a signal with an amplitude proportional to the intensity of the current and a polarity determined by the polarity of a reference voltage which is applied to another input of the comparator. The PWM control loop may then be completed by means of a flip-flop to the inputs of which the output signal of the comparator and a clock signal are applicable in order to generate at the output of the flip-flop the clocked driving signal.

摘要翻译： 一种电路，用于感测流过H桥级的负载的电流的大小和感测，该H电桥级通过时钟方波驱动信号及其反相信号分别以切换模式驱动负载，分别施加到两个 通过利用连接在电路的虚拟接地节点和实际接地节点之间的单个感测电阻来实现布置成桥式配置并且功能地切换供电节点和虚拟接地节点之间的负载的模拟开关对， 电阻及其反相信号被馈送到模拟多路复用的两个输入，其输出信号被馈送到比较器的输入端，以便在其输出端获得具有与电流的强度成正比的信号和 极性由施加到比较器的另一个输入的参考电压的极性决定。 然后可以通过触发器将PWM控制环路完成到其比较器的输出信号和时钟信号的输入端，以在触发器的输出端产生时钟驱动信号。

公开(公告)号：USRE35806E

公开(公告)日：1998-05-26

申请号：US512904

申请日：1995-08-09

申请人： Domenico Rossi ,  Andrea Cuomo ,  Giovanni Pietrobon

发明人： Domenico Rossi ,  Andrea Cuomo ,  Giovanni Pietrobon

IPC分类号： H02P7/00 ,  H03K17/56

CPC分类号： H02P7/04

摘要： A multipurpose integrated circuit for driving in a switching mode an externally connected load or loads permits implementation of any appropriate supply scheme of the external load or loads through six output terminals thereof and is therefore useful in a large number of applications. The integrated circuit uses six integrated power switching devices provided with respective recirculation diodes and a single externally connected sensing resistor for generating, by means of a customary PWM control loop, a control signal by which means of a logic circuit configurable by .�.programaming.!. .Iadd.programming .Iaddend.permits the generation of driving signals as a function of the control signal for all six integrated power switches in accordance with a configuration of the driving signals which conforms with the particular scheme of connection of the load or loads selected among the different bridge type and unipolar-motor type schemes which may be selected by programming. A multiplexer is used for selecting among bridge type driving signals and unipolar-motor type driving modes and a ROM provided with two input registers for selecting the specific driving scheme and for regulation, respectively.

摘要翻译： 用于以开关模式驱动外部连接的负载或负载的多用途集成电路允许通过其六个输出端子实现外部负载或负载的任何适当供应方案，因此在大量应用中是有用的。 该集成电路使用六个集成的功率开关器件，它们具有各自的再循环二极管和一个外部连接的感测电阻器，用于通过常规的PWM控制环路产生一个控制信号，通过该控制信号可以通过[程序设计]编程允许 根据与不同桥型和单极电机之间选择的负载或负载的特定连接方案的驱动信号的配置，产生作为所有六个集成电力开关的控制信号的驱动信号的驱动信号 可以通过编程来选择类型方案。 多路复用器用于选择桥式驱动信号和单极电机类型驱动模式，以及一个ROM，分别具有两个输入寄存器，用于选择具体的驱动方案和调节。

公开(公告)号：US4958121A

公开(公告)日：1990-09-18

申请号：US444553

申请日：1989-11-30

申请人： Andrea Cuomo ,  Claudio Diazzi ,  Klaus Rischmuller

发明人： Andrea Cuomo ,  Claudio Diazzi ,  Klaus Rischmuller

IPC分类号： H02M3/155 ,  H02M3/158 ,  H03K17/0814

CPC分类号： H03K17/08142 ,  H02M3/1582

摘要： In a power converter circuit directly or indirectly connected to the power distribution network, the protection from voltage spikes which may occur on the power supply rail is implemented in a manner as to consent the utilization of at least a portion of the energy associated with the spike by storing portion of said energy in the reactive components of the converter circuit itself instead of dissipating completely the energy through a dissipating elements as in prior art arrangements. The novel circuit arrangement utilizes one or two spike sensors the output signal or signals of which are fed to logic gates which determine a certain configuration of the analog switches of the converter circuit. A protection voltage limiting element (zener diode, avalanche diode, voltage-dependent resistor, etc.) is functionally connected across the analog switch connected between the reactive element of the converter circuit and the power supply rail and limits to its intrinsic breakdown voltage the maximum voltage across the switch.