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31 条记录 (耗时 0.013 秒)

    LED Driver Including Color Monitoring
    2.
    发明申请
    LED Driver Including Color Monitoring 审中-公开
    LED驱动器包括颜色监控

    公开(公告)号：US20120293078A1

    公开(公告)日：2012-11-22

    申请号：US13112495

    申请日：2011-05-20

    申请人： Andrea Logiudice ,  Fabrizio Donà

    发明人： Andrea Logiudice ,  Fabrizio Donà

    IPC分类号： H05B37/02

    CPC分类号： H05B33/0869 ,  H05B33/0818

    摘要： A circuit provided for driving a multi-color LED assembly includes at least two LEDs operable to emit light of different color. The circuit includes a control and processing unit that is configured to select a source LED and a sensor LED from the LEDs of the multi-color LED assembly. A sensor unit is associated with the sensor LED and is configured to obtain a current measurement value representing the photo current provided by the sensor LED when receiving incident light emitted by the source LED. A LED driver unit is associated with the source LED and is configured to provide load current to the source LED in accordance with a corresponding input value.

    摘要翻译： 提供用于驱动多色LED组件的电路包括至少两个可操作以发射不同颜色的光的LED。 该电路包括控制和处理单元，其被配置为从多色LED组件的LED中选择源LED和传感器LED。 传感器单元与传感器LED相关联，并且被配置为当接收到源LED发射的入射光时，获得表示由传感器LED提供的光电流的电流测量值。 LED驱动器单元与源LED相关联，并且被配置为根据相应的输入值向源LED提供负载电流。

    Driver Circuit for Efficiently Driving a Large Number of LEDs
    3.
    发明申请
    Driver Circuit for Efficiently Driving a Large Number of LEDs 有权
    驱动电路有效驱动大量LED

    公开(公告)号：US20130049599A1

    公开(公告)日：2013-02-28

    申请号：US13219161

    申请日：2011-08-26

    申请人： Andrea Logiudice

    发明人： Andrea Logiudice

    IPC分类号： H05B37/02

    CPC分类号： H05B33/083 ,  H05B33/0815 ,  H05B33/0851 ,  H05B33/089

    摘要： A circuit can be used for controlling a plurality of LEDs coupled in series. A switching converter operates as a current source coupled to the plurality of LEDs to provide a constant load current thereto. The switching converter includes an inductor coupled in series with the plurality of LEDs such that the same load current flows through the inductor and the plurality of LEDs. No substantial capacitance is coupled between the inductor and the plurality of LEDs. A floating driver circuit is coupled in parallel with each individual LED of the plurality of LEDs. The floating driver circuit is configured to fully or partially take over the load current thereby bypassing the respective LED in accordance with a respective modulated input signal to control the intensity of the light emitted by the LED.

    摘要翻译： 电路可用于控制串联耦合的多个LED。 开关转换器作为耦合到多个LED的电流源工作以向其提供恒定的负载电流。 开关转换器包括与多个LED串联耦合的电感器，使得相同的负载电流流过电感器和多个LED。 电感器和多个LED之间没有实质的电容耦合。 浮动驱动器电路与多个LED中的每个单独的LED并联耦合。 浮动驱动器电路被配置为完全或部分地接管负载电流，从而根据相应的调制输入信号绕过相应的LED，以控制由LED发射的光的强度。

    Failure detection for series of electrical loads
    4.
    发明授权
    Failure detection for series of electrical loads 有权
    一系列电气负载故障检测

    公开(公告)号：US08044667B2

    公开(公告)日：2011-10-25

    申请号：US12426577

    申请日：2009-04-20

    申请人： Fabrizio Cortigiani ,  Andrea Logiudice ,  Andreas Eder

    发明人： Fabrizio Cortigiani ,  Andrea Logiudice ,  Andreas Eder

    IPC分类号： G01R31/08

    CPC分类号： H05B33/0887

    摘要： An apparatus for detecting failures in an illumination device includes at least two light emitting diodes connected in series. The apparatus includes a first, a second, and a third circuit node for interfacing the illumination device such that the voltage drop across at least two light emitting diodes is applied between the first and the second circuit node and a fraction of the voltage drop is applied between the second and the third circuit node. An evaluation unit is coupled to the first, the second, and the third circuit node and configured to assess whether the electric potential present at the third circuit node is within a pre-defined range of tolerance about a nominal value that is defined as a pre-defined fraction of the potential difference present between the first and the second circuit node.

    摘要翻译： 用于检测照明装置中的故障的装置包括串联连接的至少两个发光二极管。 该装置包括用于接合照明装置的第一，第二和第三电路节点，使得跨越至少两个发光二极管的电压降被施加在第一和第二电路节点之间，并施加一小部分电压降 在第二和第三电路节点之间。 评估单元耦合到第一电路节点，第二电路节点和第三电路节点，并且被配置为评估存在于第三电路节点处的电位是否在关于标称值的预定义容限范围内，所述额定值被定义为预先 存在于第一和第二电路节点之间的电势差的定义分数。

    Circuit arrangement with at least two semiconductor switches and a central overvoltage protection
    6.
    发明授权
    Circuit arrangement with at least two semiconductor switches and a central overvoltage protection 有权
    具有至少两个半导体开关和中心过电压保护的电路布置

    公开(公告)号：US07411770B2

    公开(公告)日：2008-08-12

    申请号：US11364835

    申请日：2006-02-28

    申请人： Andrea Logiudice ,  Salvatore Giovanni Pastorina ,  Andrea Scenini ,  Bernhard Wotruba

    发明人： Andrea Logiudice ,  Salvatore Giovanni Pastorina ,  Andrea Scenini ,  Bernhard Wotruba

    IPC分类号： H02H9/04

    CPC分类号： H03K17/0822 ,  H03K17/0828

    摘要： A circuit arrangement includes a first semiconductor switch and at least one second semiconductor switch, each of them having a control terminal and a first and second load terminal, and with an overvoltage protection arrangement for the at least two semiconductor switches. The overvoltage protection arrangement comprises a voltage limiting unit with a first and a second terminal, whose first terminal is connected to a central circuit node, whose second terminal is connected to a terminal for a reference potential, and which is configured so that it conducts current when a threshold voltage is applied between the first and second load terminals. The central circuit node is coupled to the first load terminals of the semiconductor switches. The overvoltage protection arrangement further comprises a first actuating circuit for the first semiconductor switch and a second actuating circuit for the at least one second semiconductor switch.

    摘要翻译： 电路装置包括第一半导体开关和至少一个第二半导体开关，它们中的每一个具有控制端子和第一和第二负载端子，并具有至少两个半导体开关的过电压保护装置。 过电压保护装置包括具有第一和第二端子的电压限制单元，其第一端子连接到中心电路节点，其第二端子连接到用于参考电位的端子，并且被配置为使其导通电流 当在第一和第二负载端子之间施加阈值电压时。 中心电路节点耦合到半导体开关的第一负载端子。 过电压保护装置还包括用于第一半导体开关的第一致动电路和用于至少一个第二半导体开关的第二驱动电路。

    Circuit arrangement with a transistor having a reduced reverse current
    7.
    发明授权
    Circuit arrangement with a transistor having a reduced reverse current 有权
    具有减小的反向电流的晶体管的电路布置

    公开(公告)号：US07362157B2

    公开(公告)日：2008-04-22

    申请号：US11375607

    申请日：2006-03-14

    申请人： Andrea Logiudice

    发明人： Andrea Logiudice

    IPC分类号： H03K5/08

    CPC分类号： G05F1/575

    摘要： A circuit arrangement is disclosed herein having an input terminal configured to receive an input voltage, and an output terminal to provide an output voltage for a load. A first transistor with a load path and a control terminal is connected between the input terminal and output terminal. A first resistance element is connected between the control terminal of the first transistor and the input terminal. A first driver circuit is connected to the control terminal of the first transistor and is configured to control a current flow through the first transistor in a forward direction. A second driver circuit is provided which is designed to detect a voltage difference between the input terminal and output terminal, and then to drive this first transistor as a function of the voltage difference in a blocking action.

    摘要翻译： 本文公开了一种电路装置，其具有被配置为接收输入电压的输入端子和输出端子以为​​负载提供输出电压。 具有负载路径和控制端子的第一晶体管连接在输入端子和输出端子之间。 第一电阻元件连接在第一晶体管的控制端和输入端之间。 第一驱动电路连接到第一晶体管的控制端，并被配置为控制沿正向流过第一晶体管的电流。 提供第二驱动器电路，其被设计为检测输入端子和输出端子之间的电压差，然后作为阻塞动作中的电压差的函数驱动该第一晶体管。

    Reference voltage generating circuit for generating low reference voltages
    8.
    发明申请
    Reference voltage generating circuit for generating low reference voltages 审中-公开
    用于产生低参考电压的基准电压产生电路

    公开(公告)号：US20070200546A1

    公开(公告)日：2007-08-30

    申请号：US11488451

    申请日：2006-07-18

    申请人： Andrea Logiudice ,  Bernhard Wotruba

    发明人： Andrea Logiudice ,  Bernhard Wotruba

    IPC分类号： G05F3/20

    CPC分类号： G05F3/30

    摘要： The invention relates to a reference voltage generating circuit comprising: a voltage source circuit (10) which is constructed for providing at an output (15) a first reference voltage (Vbe/a) which is proportional to the voltage (Vbe) across a pn junction, polarized in the forward direction, of a bipolar component (11) and which is lower than this voltage, an amplifier arrangement (2) having a first and second input (25, 26), an output (27) at which an output voltage (Vout) is available, a differential amplifier stage (20) which has at least two semiconductor components (21, 22; 121, 122), and an output stage (30), the first reference voltage (Vbe/a) being supplied to the first input (25), the output (27) being fed back to the second input (26) and the amplifier arrangement having an offset which is proportional to the thermal voltage of a semiconductor material of the at least two semiconductor components (21, 22; 121, 122) of the differential amplifier stage (20) and wherein a second reference voltage (Vout) is available at the output (OUT).

    摘要翻译： 本发明涉及一种参考电压产生电路，包括：电压源电路（10），其被构造用于在输出端（15）处提供与跨越pn的电压（Vbe）成比例的第一参考电压（Vbe / a） （11）的低于该电压的正向偏振接点，具有第一和第二输入（25,26）的放大器装置（2），输出端（27），输出端 电压（Vout）可用，具有至少两个半导体部件（21,22; 121,122）和输出级（30）的差分放大器级（20），提供第一参考电压（Vbe / a） 到所述第一输入端（25），所述输出端（27）被反馈到所述第二输入端（26），并且所述放大器装置具有与所述至少两个半导体部件（21）的半导体材料的热电压成比例的偏移 ，22; 121,122） e（20），并且其中第二参考电压（Vout）在输出（OUT）处可用。