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21. 发明授权

US07184288B2 System for controlling the dissipated power supply of a power stage working in a mixed Linear/PWM mode and driving an electromagnetic load 有权
标题翻译：用于控制以混合线性/ PWM模式工作并驱动电磁负载的功率级的耗散功率级的系统
公开(公告)号：US07184288B2
公开(公告)日：2007-02-27
申请号：US11061107
申请日：2005-02-18
申请人： Ezio Galbiati
发明人： Ezio Galbiati
IPC分类号： H02M3/5387
CPC分类号： H02M7/53871
摘要： The invention relates to a system for controlling the power dissipated by a power stage working in mixed Linear/PWM mode, for driving an electromagnetic load, the power stage comprising a power amplifier incorporating a bridge-like circuit, with a half bridge controlled in PWM mode and another half bridge controlled in linear mode, respectively by a converter block and by an error amplifier and wherein the electromagnetic load is crossed by a current and generates an electromotive force, the control system further comprising a first amplifier of a voltage drop, calculated on a sensing resistance of the electromagnetic load, whose output signal is further applied by a second amplifier.Advantageously, according to the invention, the Linear half bridge is controlled directly by an input voltage drawn from an input node outside the current control loop.
摘要翻译：本发明涉及一种用于控制由混合线性/ PWM模式工作的用于驱动电磁负载的功率级消耗的功率的系统，功率级包括具有桥式电路的功率放大器，其中半桥控制在PWM 模式和另一半桥分别由转换器模块和误差放大器控制，并且其中所述电磁负载被电流交叉并产生电动势，所述控制系统还包括电压降的第一放大器，在电磁负载的感测电阻上，其输出信号被第二放大器进一步施加。有利地，根据本发明，线性半桥直接由从电流控制回路外部的输入节点抽取的输入电压来控制。

22. 发明申请

US20060250099A1 METHOD FOR SENSING THE BACK ELECTROMOTIVE FORCE INDUCED IN THE WINDING OF A VOICE COIL MOTOR 有权
标题翻译：用于感测在电话线圈电机绕组中产生的反电动力的方法
公开(公告)号：US20060250099A1
公开(公告)日：2006-11-09
申请号：US11381432
申请日：2006-05-03
申请人： Giuseppe Maiocchi , Ezio Galbiati , Michele Boscolo
发明人： Giuseppe Maiocchi , Ezio Galbiati , Michele Boscolo
IPC分类号： H02P25/12
CPC分类号： H02P6/182 , H02P25/034
摘要： A method for sensing a back electromotive force induced in a winding of a voice coil electro-mechanical actuator controlled in a discontinuous mode by alternating conduction phases to off-phases includes sensing voltage at terminals of the winding during an off-phase The winding is driven during a conduction phase immediately preceding the off-phase to invert, during a final portion of the conduction phase before entering an off-phase, a direction of flow of the current through the winding.
摘要翻译：用于感测在不连续模式下控制的音圈机电致动器的绕组中感应到的反电动势的方法是通过将导通相交替为非相，包括在断相期间感测绕组端子处的电压。绕组被驱动在紧邻异相之前的导通阶段期间，在进入截止相之前的导通阶段的最后部分期间，电流通过绕组的流动方向。

23. 发明申请

US20050185434A1 System for controlling the dissipated power supply of a power stage working in a mixed Linear/PWM mode and driving an electromagnetic load 有权
标题翻译：用于控制以混合线性/ PWM模式工作并驱动电磁负载的功率级的耗散功率级的系统
公开(公告)号：US20050185434A1
公开(公告)日：2005-08-25
申请号：US11061107
申请日：2005-02-18
申请人： Ezio Galbiati
发明人： Ezio Galbiati
IPC分类号： H02M7/5387
CPC分类号： H02M7/53871
摘要： The invention relates to a system for controlling the power dissipated by a power stage working in mixed Linear/PWM mode, for driving an electromagnetic load, the power stage comprising a power amplifier incorporating a bridge-like circuit, with a half bridge controlled in PWM mode and another half bridge controlled in linear mode, respectively by a converter block and by an error amplifier and wherein the electromagnetic load is crossed by a current and generates an electromotive force, the control system further comprising a first amplifier of a voltage drop, calculated on a sensing resistance of the electromagnetic load, whose output signal is further applied by a second amplifier. Advantageously, according to the invention, the Linear half bridge is controlled directly by an input voltage drawn from an input node outside the current control loop.
摘要翻译：本发明涉及一种用于控制由混合线性/ PWM模式工作的用于驱动电磁负载的功率级消耗的功率的系统，功率级包括具有桥式电路的功率放大器，其中半桥控制在PWM 模式和另一半桥分别由转换器模块和误差放大器控制，并且其中所述电磁负载被电流交叉并产生电动势，所述控制系统还包括电压降的第一放大器，在电磁负载的感测电阻上，其输出信号被第二放大器进一步施加。有利地，根据本发明，线性半桥直接由从电流控制回路外部的输入节点抽取的输入电压来控制。

24. 发明授权

US06919763B2 Transconductance amplifier for inductive loads and method for driving inductive loads 有权
标题翻译：用于感性负载的跨导放大器和用于驱动感性负载的方法
公开(公告)号：US06919763B2
公开(公告)日：2005-07-19
申请号：US10642394
申请日：2003-08-14
申请人： Michele Boscolo , Ezio Galbiati
发明人： Michele Boscolo , Ezio Galbiati
IPC分类号： H03F3/217 , H03F3/00 , H02K23/00 , H03F1/36
CPC分类号： H03F3/217
摘要： A transconductance amplifier for inductive loads and a relevant inductive load driving method, the amplifier having an input stage receiving a driving signal (set-point), a power stage connected downstream of the input stage and connected to the load and an output stage fedback on the input stage to transfer a signal associated to the load. Advantageously, the input stage comprises at least a comparator receiving on one input the driving signal and on another input the output of the output stage. A delay block is also provided between the comparator output and the power stage to delay the comparator switching. This can be obtained also by using a hysteretic comparator.
摘要翻译：用于感性负载的跨导放大器和相关的感性负载驱动方法，放大器具有接收驱动信号（设定点）的输入级，连接在输入级下游并连接到负载的功率级，并且输出级反馈输入级传输与负载相关联的信号。有利地，输入级包括至少一个比较器，在一个输入端接收驱动信号，并在另一个输入端上接收输出级的输出。在比较器输出和功率级之间还提供延迟模块以延迟比较器的切换。这也可以通过使用滞后比较器来获得。

25. 发明授权

US06549044B2 Driving circuit for a voice coil motor and driving method thereof 有权
公开(公告)号：US06549044B2
公开(公告)日：2003-04-15
申请号：US09972750
申请日：2001-10-05
申请人： Massimiliano Brambilla , Maurizio Nessi , Ezio Galbiati
发明人： Massimiliano Brambilla , Maurizio Nessi , Ezio Galbiati
IPC分类号： G11B2102
CPC分类号： H03F3/187 , H03F3/3061 , H03F3/3081
摘要： A control circuit providing a driving current to a voice coil motor to position a reading and writing head of a disk memory system is described. The circuit comprises a first and a second class AB amplifiers the outputs of which are connected to the terminals of a first resistor in series with the voice coil motor so that a current passes through the voice coil motor and through the first resistor. The circuit comprises a sense amplifier the input terminals of which are coupled with the terminals of said first resistor, a device at the input of which is present a signal which is a sum of an external signal and of an output signal of the sense amplifier. The first amplifier and the second amplifier being driven in inverted phase by an output signal produced by the device. The circuit comprises means for inserting a second resistor in series with the first resistor so that said current passes through the series of said first and said second resistors and so that said sense amplifier has the input terminals coupled with the terminals of said series of resistors.

26. 发明授权

US06420847B1 Device for detection of current or voltage on a PWM driven winding with reduced jitter and related methods 有权
标题翻译：用于通过减少抖动和相关方法检测PWM驱动绕组上的电流或电压的装置
公开(公告)号：US06420847B1
公开(公告)日：2002-07-16
申请号：US09672466
申请日：2000-09-28
申请人： Ezio Galbiati , Michele Boscolo , Marco Viti
发明人： Ezio Galbiati , Michele Boscolo , Marco Viti
IPC分类号： H02P124
CPC分类号： H02P6/182
摘要： A method for detecting a zero-cross event of an induced back electromotive force (BEMF) or of a nullification instant of a periodic current in a PWM driven winding, by circuits generating an analog signal representative of the induced BEMF or of the nullification instant of the periodic current, comparing the analog signal with zero and producing a first logic signal, generating a PWM driving signal, and storing a time between two consecutive zero-cross events, is provided. The method may include storing a time between a last two zero-cross events and synchronizing the PWM driving signal from a last zero-cross event having a duration equal to a difference between an established time based upon the stored time interval and a first time. If a new zero-cross event is not detected within the established time, switching of the PWM driving signal may be disabled for a time having a maximum duration equal to a second time or until a new zero-cross event is detected.
摘要翻译：一种用于检测PWM驱动绕组中的感应反电动势（BEMF）或周期性电流的无效瞬间的零交叉事件的方法，通过产生代表所诱导的BEMF的模拟信号的电路或者产生提供周期性电流，将模拟信号与零比较并产生第一逻辑信号，产生PWM驱动信号，并且存储两个连续零交叉事件之间的时间。该方法可以包括在最后的两个过零事件之间存储时间，并且使来自最后的零交叉事件的PWM驱动信号与具有基于存储的时间间隔和第一时间的建立时间之间的差异的持续时间相等的PWM驱动信号。如果在建立的时间内没有检测到新的零交叉事件，则可以在具有等于第二时间的最大持续时间或直到检测到新的零交叉事件的时间之前禁用PWM驱动信号的切换。

27. 发明授权

US06385067B2 Analog/digital PWM control circuit of a winding 有权
标题翻译：绕组的模拟/数字PWM控制电路
公开(公告)号：US06385067B2
公开(公告)日：2002-05-07
申请号：US09814176
申请日：2001-03-21
申请人： Ezio Galbiati , Maurizio Nessi , Marco Palestra
发明人： Ezio Galbiati , Maurizio Nessi , Marco Palestra
IPC分类号： H02M75387
CPC分类号： H02M7/53873
摘要： A feedback control circuit is for the current in a load formed by a winding in series with a current sensing resistor, coupled to a full-bridge output stage, an amplifier coupled to the terminals of the sensing resistor, and a controller fed with the output of the amplifier and with a voltage reference and producing a correction signal. The circuit has a PWM converter for generating a pair of control signals. The PWM converter includes an up/down counter producing a count value and logic circuitry that produces the twos-complement of the correction signal. A pair of registers are coupled to the outputs of the controller and of the logic circuitry. A first comparator coupled to the outputs of the counter and of the first register produces the first control signal, if the count signal exceeds the value stored in the first register. A second comparator coupled to the counter and to the second register produces the second control signal, if the count signal overcomes the value stored in the second register.
摘要翻译：反馈控制电路用于由负载形成的负载中的电流，该绕组与耦合到全桥输出级的电流感测电阻串联，耦合到感测电阻的端子的放大器和馈送有输出的控制器并具有电压基准并产生校正信号。该电路具有用于产生一对控制信号的PWM转换器。 PWM转换器包括产生计数值的上/下计数器和产生校正信号的二进制补码的逻辑电路。一对寄存器耦合到控制器和逻辑电路的输出端。如果计数信号超过存储在第一寄存器中的值，则耦合到计数器和第一寄存器的输出的第一比较器产生第一控制信号。如果计数信号克服存储在第二寄存器中的值，则耦合到计数器和第二寄存器的第二比较器产生第二控制信号。

28. 发明授权

US06310912B1 System for increasing the definition in converting a digital datum in a PWM signal for driving a full-bridge output stage 失效
标题翻译：用于增加在PWM信号中转换数字数据以驱动全桥输出级的定义的系统
公开(公告)号：US06310912B1
公开(公告)日：2001-10-30
申请号：US09112999
申请日：1998-07-10
申请人： Giuseppe Maiocchi , Ezio Galbiati
发明人： Giuseppe Maiocchi , Ezio Galbiati
IPC分类号： H03K908
CPC分类号： H03M1/825 , H02M7/53873
摘要： The definition of conversion of a digital value in a PWM signal using an N-bit up/down counter is improved by increasing the dimension of the input data to N+2 bits. This is done using the two Lsb's of the N+2 input data for selecting one among three intermediate levels between two consecutive values of an N-bit dynamic, according to a predefined table of combinations. The converter may still use an N-bit comparator. The system is particularly useful in driving a multi-phase brushless DC motor with each phase-winding singularly driven through a full-bridge output stage.
摘要翻译：通过将输入数据的尺寸增加到N + 2位，可以提高使用N位向上/向下计数器在PWM信号中转换数字值的定义。这是通过使用N + 2个输入数据的两个Lsb进行的，用于根据预定义的组合表来选择N位动态的两个连续值之间的三个中间级之一。转换器仍然可以使用N位比较器。该系统在驱动具有通过全桥输出级单相驱动的每个相绕组的多相无刷直流电动机时特别有用。

29. 发明授权

US08829837B2 Driving apparatus for an electromagnetic load and related method 有权
标题翻译：电磁负载驱动装置及相关方法
公开(公告)号：US08829837B2
公开(公告)日：2014-09-09
申请号：US12894049
申请日：2010-09-29
申请人： Ezio Galbiati
发明人： Ezio Galbiati
IPC分类号： H02P1/04 , H02P7/00 , H02P6/14 , H02P6/00 , H02P6/08
CPC分类号： H02P6/001 , H02P6/085 , H02P6/14 , H02P6/34
摘要： A driving apparatus for an electromagnetic load, said apparatus having at least one pair of first and second transistors arranged so as to form a current path with the electromagnetic load for discharging the current produced by the electromagnetic load. The first transistor has an inherent diode between the non-drivable terminals and the apparatus is configured to control switching of the pair of first and second transistors, to diode-connect the second transistor, with said first and second transistors switched off, so that the current produced by said electromagnetic load, crossing said inherent diode, creates an overvoltage between the terminals of the second diode-configured transistor such to exceed the conduction threshold voltage thereof.
摘要翻译：一种用于电磁负载的驱动装置，所述装置具有至少一对第一和第二晶体管，其布置成与用于对由电磁负载产生的电流放电的电磁负载形成电流路径。第一晶体管具有在不可驱动端子之间的固有二极管，并且该装置被配置为控制所述一对第一和第二晶体管的开关，以使所述第一和第二晶体管截止二极管连接第二晶体管，使得由所述电磁负载产生的与所述固有二极管交叉的电流在第二二极管配置晶体管的端子之间产生超过其导通阈值电压的过电压。

30. 发明授权

US07542262B2 Apparatus for driving an electromagnetic load 有权
标题翻译：用于驱动电磁负载的装置
公开(公告)号：US07542262B2
公开(公告)日：2009-06-02
申请号：US11234973
申请日：2005-09-26
申请人： Ezio Galbiati
发明人： Ezio Galbiati
IPC分类号： H01H47/00
CPC分类号： G11B5/5547 , G11B5/022 , H02P25/034
摘要： The present invention refers to an apparatus for driving an electromagnetic load. The apparatus comprises a power stage comprising at least one first and one second transistor half-bridge and the electromagnetic load is arranged between the first and the second half-bridge. The apparatus comprises a first and a second device suitable for driving in linear modality respectively the first and the second half-bridge and another device suitable for driving in pulse width modulation modality the first half-bridge, first switch means suitable for connecting the first half-bridge to the first device or to the other device in response to a control signal, second switch means suitable for connecting the second half-bridge to the second device in response to the control signal. The apparatus has an input signal and comprises a further device suitable for connecting the second half-bridge to a first reference voltage and to a second reference voltage, with said first reference voltage greater than said second reference voltage, when said first half-bridge is connected to the other device suitable for driving it in pulse width modulation modality.
摘要翻译：本发明涉及一种用于驱动电磁负载的装置。该装置包括功率级，其包括至少一个第一和第二晶体管半桥，并且电磁负载设置在第一和第二半桥之间。该装置包括适于分别以第一和第二半桥的线性模式驱动的第一和第二装置，以及适于以脉冲宽度调制模式驱动的第一半桥的第一开关装置，适于连接第一半 - 响应于控制信号而桥接到第一设备或另一个设备，第二开关装置适于响应于控制信号将第二半桥连接到第二设备。所述装置具有输入信号，并且包括适于将所述第二半桥连接到第一参考电压的第二参考电压和与所述第一参考电压大于所述第二参考电压的第二参考电压连接的第二参考电压的另一装置，当所述第一半桥是连接到适合于以脉冲宽度调制模式驱动的另一个器件。

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