公开(公告)号：US08461977B2

公开(公告)日：2013-06-11

申请号：US12844067

申请日：2010-07-27

Applicant: Matteo Amighini ,  Alberto Poma ,  Giuseppe Di Biase ,  Vanni Poletto

Inventor： Matteo Amighini ,  Alberto Poma ,  Giuseppe Di Biase ,  Vanni Poletto

IPC: B60Q1/00

CPC classification number: H02H5/10 ,  H02H7/12 ,  H02M3/156 ,  H02M2003/1555

Abstract: An electronic circuit includes a node coupled to a load to be driven, and a power device, which can be switched between activation and deactivation and coupled to the node. The circuit further includes a current generator having an output connected to the node and that can be enabled to generate current at least when the power device is deactivated. The circuit also includes a comparator for comparing an electric voltage of the node with a reference voltage and is configured to generate a comparison signal based thereon.

Abstract translation: 电子电路包括耦合到要被驱动的负载的节点和能够在激活和去激活之间切换并耦合到节点的功率器件。 电路还包括电流发生器，其具有连接到节点的输出，并且至少当功率器件被去激活时，该电流发生器能够被产生电流。 电路还包括用于将节点的电压与参考电压进行比较的比较器，并且被配置为基于此产生比较信号。

公开(公告)号：US6037826A

公开(公告)日：2000-03-14

申请号：US99243

申请日：1993-07-28

Applicant: Vanni Poletto ,  Marco Morelli

Inventor： Vanni Poletto ,  Marco Morelli

IPC: H01L29/73 ,  G05F1/569 ,  H01L21/331 ,  H03K17/0422 ,  H03K17/08

CPC classification number: G05F1/569 ,  H03K17/0422

Abstract: Saturation of a bipolar power transistor is controlled by sensing the current which is eventually injected into the substrate of the integrated circuit by the saturating transistor and using this signal for exerting a limiting action on the current which is driven to the base of the power transistor by a dedicated driving circuit. Unlike the prior art antisaturation systems, it is no longer necessary to precisely monitor the operating voltages across the terminals of the bipolar power transistor. A suitable sensing resistance may be integrated conveniently at a distance from the often complex integrated structure of the bipolar transistor. The system of the invention offers numerous advantages and ensures intervention of the antisaturation circuit only when the power transistor has positively reached a state of saturation, but well before any unwanted consequence.

Abstract translation: 双极功率晶体管的饱和度通过感测由饱和晶体管最终注入到集成电路的衬底中的电流来控制，并且使用该信号对通过功率晶体管的基极驱动的电流施加限制作用 专用驱动电路。 与现有技术的抗饱和系统不同，不再需要精确地监视双极功率晶体管的端子两端的工作电压。 合适的感测电阻可以方便地集成在与双极晶体管的经常复杂的集成结构相距一定距离处。 本发明的系统提供了许多优点，并且仅在功率晶体管正确地达到饱和状态，但在任何不期望的后果之前才能确保抗饱和电路的干预。

公开(公告)号：US5886510A

公开(公告)日：1999-03-23

申请号：US932063

申请日：1997-09-15

Applicant: Angelo Crespi ,  Stefania Chicca ,  Paolo Mastella ,  Vanni Poletto

Inventor： Angelo Crespi ,  Stefania Chicca ,  Paolo Mastella ,  Vanni Poletto

IPC: G01R15/14 ,  G01R19/00 ,  G01R19/165 ,  G01R31/00 ,  G01R31/02 ,  G01R31/28 ,  G05F1/40

CPC classification number: G01R31/026 ,  G01R31/006 ,  G01R15/14 ,  G01R19/0023 ,  G01R19/16519

Abstract: A circuit for diagnosing the state of a load connected to a driver includes a DMOS transistor interposed between a terminal of the load and voltage comparator circuits. The DMOS transistor limits the maximum voltage input to the comparators to thereby reduce the circuit area occupied by the comparators and consequently to reduce the cost of the diagnosis circuit.

Abstract translation: 用于诊断连接到驱动器的负载的状态的电路包括插入在负载的端子和电压比较器电路之间的DMOS晶体管。 DMOS晶体管限制了比较器的最大电压输入，从而减小了比较器占用的电路面积，从而降低了诊断电路的成本。

公开(公告)号：US4935703A

公开(公告)日：1990-06-19

申请号：US359848

申请日：1989-05-31

Applicant: Vanni Poletto

Inventor： Vanni Poletto

IPC: H03F1/02 ,  H03F3/30

CPC classification number: H03F3/3069 ,  H03F1/0261 ,  H03F3/3071 ,  H03F2203/30121 ,  H03F2203/30144 ,  H03F2203/45168

Abstract: A bias current source for the output stage of an operational amplifier is controllable. The bias current generator senses the voltage differential on the differential operational amplifier inputs. When an input differential voltage is sensed which generates a rising output signal, additional bias current is provided to the output stage. When the output voltage is constant or falling, the bias current to the output stage is decreased.

公开(公告)号：US4839610A

公开(公告)日：1989-06-13

申请号：US119190

申请日：1987-11-10

Applicant: Michelangelo Mazzucco ,  Vanni Poletto ,  Mario Sartori

Inventor： Michelangelo Mazzucco ,  Vanni Poletto ,  Mario Sartori

IPC: H03F1/30 ,  H03G1/04 ,  H03G5/16 ,  H03G5/18 ,  H03H11/12

CPC classification number: H03G1/04 ,  H03G5/18 ,  H03H11/1291

Abstract: A system for automatically controlling the gain-bandwidth product of operational amplifiers, wherein a gain-bandwidth product (G*B) of one of the amplifiers placed on the same chip as the amplifiers to be controlled is measured and the resulting signal is used to control through a bias circuit, the gain-bandwidth products of all the amplifiers, the value of these products being presettable by the frequeny of a control signal sent to the system input. The reference amplifier is highly compensated in the configuration of voltage follower.

公开(公告)号：US4800589A

公开(公告)日：1989-01-24

申请号：US109435

申请日：1987-10-16

Applicant: Marco Siligoni ,  Vanni Poletto

Inventor： Marco Siligoni ,  Vanni Poletto

IPC: H04M19/00

CPC classification number: H04M19/001

Abstract: A Subscriber Line Interface Circuit (SLIC) having a voltage regulator for application thereto of a DC supply voltage V.sub.B and connected at the output terminals to an audio transmission line to provide a line current I.sub.L and voltage V.sub.L for a given resistance load R.sub.L on the line, is provided with a control circuit which, by picking up appropriate current and voltage values from the interface circuit, outputs a voltage value which is the equal of the difference between an optimum supply voltage V.sub.BF and the supply voltage V.sub.B. The control circuit output is connected to the voltage regulator to minimize the voltage V.sub.BFK applied to the interface circuit as the transmission line resistance load R.sub.L varies, thus minimizing the power dissipated through the interface circuit.

Abstract translation: 一种用户线路接口电路（SLIC），具有用于施加直流电源电压VB并且在输出端连接到音频传输线的电压调节器，以为线路上的给定电阻负载RL提供线路电流IL和电压VL 设置有控制电路，通过从接口电路拾取适当的电流和电压值，输出与最佳电源电压VBF和电源电压VB之间的差等于的电压值。 控制电路输出连接到电压调节器，以使传输线电阻负载RL变化时施加到接口电路的电压VBFK最小化，从而最小化通过接口电路消耗的功率。

公开(公告)号：US06483085B1

公开(公告)日：2002-11-19

申请号：US09712412

申请日：2000-11-13

Applicant: Andrea Milanesi ,  Vanni Poletto ,  Paolo Ghigini

Inventor： Andrea Milanesi ,  Vanni Poletto ,  Paolo Ghigini

IPC: H05B102

CPC classification number: G05D23/2401

Abstract: A temperature control system and method for integrated circuits, particularly those having a plurality of channels or power devices. The temperature control system for an integrated circuit includes at least a heat generating device; a sensor element providing a signal correlated to the working conditions of said the heat generating device such as a signal proportional to the dissipated power of the heat generating device; an elaboration circuit of the signal correlated to the working conditions of the heat generating device; and a turning off circuit of said at least a heat generating device responsively to a signal of said elaboration circuit.

Abstract translation: 一种用于集成电路的温度控制系统和方法，特别是具有多个通道或功率器件的那些。 集成电路的温度控制系统至少包括发热装置; 提供与所述发热装置的工作条件相关的信号的传感器元件，例如与发热装置的耗散功率成比例的信号; 该信号的精密电路与发热装置的工作条件相关; 以及响应于所述精细电路的信号的所述至少一个发热装置的关闭电路。

公开(公告)号：US06462557B1

公开(公告)日：2002-10-08

申请号：US09570874

申请日：2000-05-15

Applicant: Andrea Milanesi ,  Stefania Chicca ,  Vanni Poletto ,  Valerio Giorgetta ,  Stefano Sgatti ,  Sergio Vigna

Inventor： Andrea Milanesi ,  Stefania Chicca ,  Vanni Poletto ,  Valerio Giorgetta ,  Stefano Sgatti ,  Sergio Vigna

IPC: G08B2100

CPC classification number: G01R31/024

Abstract: A system for diagnosing a driver and detecting circuit anomalies therein includes: voltage comparator circuits for generating diagnostic logic signals, each of which indicates the existence of a corresponding type of anomaly; and a coding circuit to receive the diagnostic logic signals and to output information relating to an overall operating state of the driver. The coding circuit includes a first portion to provide at its output first logic input signals indicating the last anomaly to occur since a system reset operation. The coding circuit also includes a second portion for coding the first logic input signals. The second portion includes a sequential logic network to receive the first logic input signals and at least one second logic signal indicating the current operating phase of the driver. The second portion provides, as a function of the first and second logic signals, a stable internal state to determine the output information in the form of an N bit coded word. The N bit coded word is representative of the occurrence of an anomaly, of an absence of an anomaly in the current operating phase, or of an absence of an anomaly in any operating phase.

Abstract translation: 用于诊断驱动器并检测电路异常的系统包括：用于产生诊断逻辑信号的电压比较器电路，每个诊断逻辑信号指示存在相应类型的异常; 以及编码电路，用于接收诊断逻辑信号并输出​​与驾驶员的总体操作状态有关的信息。 编码电路包括第一部分，在其输出端提供第一逻辑输入信号，指示自系统复位操作以来发生的最后一个异常。 编码电路还包括用于对第一逻辑输入信号进行编码的第二部分。 第二部分包括用于接收第一逻辑输入信号的顺序逻辑网络和指示驾驶员的当前操作阶段的至少一个第二逻辑信号。 第二部分提供作为第一和第二逻辑信号的函数的稳定的内部状态，以以N位编码字的形式确定输出信息。 N位编码字表示在当前操作阶段中不存在异常或者在任何操作阶段中不存在异常的异常的发生。

公开(公告)号：US06292341B1

公开(公告)日：2001-09-18

申请号：US09295842

申请日：1999-04-21

Applicant: Andrea Milanesi ,  Stefania Chicca ,  Marco Morelli ,  Vanni Poletto

Inventor： Andrea Milanesi ,  Stefania Chicca ,  Marco Morelli ,  Vanni Poletto

IPC: H02H318

CPC classification number: H03K17/0822

Abstract: A protection circuit of a diagnostic output line (K-line) of a control unit for protection of the control unit in the event of a ground disconnection or of a “below ground” condition is provided. The diagnostic output line includes a first interface DMOS transistor with a source connected to ground and a drain coupled to the diagnostic output line through a second DMOS transistor with a source connected to the output line and a drain connected to the source of the first DMOS transistor. The protection circuit also includes a comparator for the voltage of the diagnostic output line with the potential of the ground node, and a two-input logic gate, whose output controls a current generator forcing a current, limited by a resistor, on the diagnostic output line.

Abstract translation: 提供用于在接地断开或“低于地面”情况下保护控制单元的控制单元的诊断输出线（K线）的保护电路。 诊断输出线包括具有源极连接到地的第一接口DMOS晶体管和通过连接到输出线的源极的第二DMOS晶体管耦合到诊断输出线的漏极，以及连接到第一DMOS晶体管的源极的漏极 。 保护电路还包括用于具有接地节点的电位的诊断输出线的电压的比较器，以及双输入逻辑门，其输出控制电流发生器强制由电阻器限制的电流在诊断输出端 线。

公开(公告)号：US5373225A

公开(公告)日：1994-12-13

申请号：US941665

申请日：1992-09-08

Applicant: Vanni Poletto ,  Marco Morelli

Inventor： Vanni Poletto ,  Marco Morelli

IPC: G05F1/56 ,  H02J1/00

CPC classification number: G05F1/56

Abstract: A low-drop voltage regulator includes a P-type power transistor having an input terminal connected to a supply source, an output terminal connected to a load, and a control terminal driven by the output of an operational amplifier having its non-inverting input connected to a reference voltage source and its inverting input connected to the output terminal of the power transistor. To improve the regulation characteristics of the regulator without jeopardizing stability, even under normally critical conditions, provision is made for a feedback network including a capacitive component between the output and inverting input of the operational amplifier.

Abstract translation: 一个低压降稳压器包括一个P型功率晶体管，它具有一个连接到一个电源的输入端，一个连接到一个负载的输出端，以及一个由其同相输入连接的运算放大器的输出驱动的控制端 到参考电压源，其反相输入连接到功率晶体管的输出端。 为了在不危及稳定性的情况下改善调节特性，即使在正常临界条件下，也提供了包括运算放大器的输出和反相输入之间的电容分量的反馈网络。