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公开(公告)号：US08044667B2
公开(公告)日：2011-10-25
申请号：US12426577
申请日：2009-04-20
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。
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公开(公告)号：US20100264828A1
公开(公告)日：2010-10-21
申请号：US12426577
申请日：2009-04-20
IPC分类号： H05B37/03
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。
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公开(公告)号：US08860427B2
公开(公告)日：2014-10-14
申请号：US13221562
申请日：2011-08-30
CPC分类号： H05B33/0887 , H05B33/0845
摘要： A device can be used for detecting failures in an illumination device having a plurality of light emitting diodes connected in series. A first circuit node, a second circuit node, and a third circuit node interface the illumination device such that a voltage supplying the plurality of light emitting diodes is applied between the first and the second circuit node and a first fraction of the supply voltage drop is provided between the third and the second circuit node. An evaluation unit is coupled to the first circuit node, the second circuit node, and the third circuit node and configured to assess whether a voltage present at the third circuit node is within a pre-defined range of tolerance about a nominal value that is defined as a second fraction of the supply voltage present between the first and the second circuit node.
摘要翻译： 一种装置可用于检测具有串联连接的多个发光二极管的照明装置中的故障。 第一电路节点，第二电路节点和第三电路节点接合照明装置，使得在第一和第二电路节点之间施加提供多个发光二极管的电压，并且电源电压降的第一部分是 设置在第三和第二电路节点之间。 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压是否在关于限定的标称值的预定义容限范围内 作为存在于第一和第二电路节点之间的电源电压的第二分数。
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公开(公告)号：US20120074947A1
公开(公告)日：2012-03-29
申请号：US13221562
申请日：2011-08-30
IPC分类号： G01R31/26
CPC分类号： H05B33/0887 , H05B33/0845
摘要： A device can be used for detecting failures in an illumination device having a plurality of light emitting diodes connected in series. A first circuit node, a second circuit node, and a third circuit node interface the illumination device such that a voltage supplying the plurality of light emitting diodes is applied between the first and the second circuit node and a first fraction of the supply voltage drop is provided between the third and the second circuit node. An evaluation unit is coupled to the first circuit node, the second circuit node, and the third circuit node and configured to assess whether a voltage present at the third circuit node is within a pre-defined range of tolerance about a nominal value that is defined as a second fraction of the supply voltage present between the first and the second circuit node.
摘要翻译： 一种装置可用于检测具有串联连接的多个发光二极管的照明装置中的故障。 第一电路节点，第二电路节点和第三电路节点接合照明装置，使得在第一和第二电路节点之间施加提供多个发光二极管的电压，并且电源电压降的第一部分是 设置在第三和第二电路节点之间。 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压是否在关于限定的标称值的预定义容限范围内 作为存在于第一和第二电路节点之间的电源电压的第二分数。
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公开(公告)号：US07522397B2
公开(公告)日：2009-04-21
申请号：US11506157
申请日：2006-08-16
IPC分类号： H02H5/04
CPC分类号： H03K19/01759 , H03K19/017509
摘要： An interface circuit includes an input terminal, a controlled current sink, a current measurement arrangement, and a logic circuit. The input terminal is configured to receive an input signal. The controlled current sink is operably coupled to the input terminal, and is operable to controllably take up a current from the input terminal according to a transmission signal. The current measurement arrangement is configured to generate a current measurement signal based on the current taken up by the current sink. The logic circuit is operably coupled to receive the current measurement signal and the input signal, and is configured to generate a signal depending on the input signal.
摘要翻译： 接口电路包括输入端子，受控电流吸收器，电流测量装置和逻辑电路。 输入端被配置为接收输入信号。 受控电流接收器可操作地耦合到输入端子，并且可操作以根据传输信号可控制地从输入端子吸收电流。 当前测量装置被配置为基于由电流吸收器占据的电流来产生电流测量信号。 逻辑电路可操作地耦合以接收当前测量信号和输入信号，并且被配置为根据输入信号产生信号。
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6.发明申请Circuit comprising a MOS transistor and a control circuit for the MOS transistor 有权电路包括MOS晶体管和用于MOS晶体管的控制电路公开(公告)号：US20080068059A1
公开(公告)日：2008-03-20
申请号：US11825322
申请日：2007-07-05
IPC分类号： H03K5/12
CPC分类号： H03K17/163 , H03K17/687
摘要： A circuit includes a MOS transistor having a control electrode and a control capacitance, and including a control circuit for the MOS transistor. The control circuit includes an input to supply a control signal and an output to supply a drive signal, the output being connected to the control electrode of the MOS transistor. A calibration circuit is connected to the control electrode of the MOS transistor, and generates a calibration signal dependent on the capacitance value of the control capacitance. A drive circuit generates the drive signal with an amplitude dependent on the calibration signal as determined by the control signal.
摘要翻译： 电路包括具有控制电极和控制电容的MOS晶体管，并且包括用于MOS晶体管的控制电路。 控制电路包括用于提供控制信号的输入端和用于提供驱动信号的输出端，该输出端连接到MOS晶体管的控制电极。 校准电路连接到MOS晶体管的控制电极，并根据控制电容的电容值产生校准信号。 驱动电路产生具有取决于由控制信号确定的校准信号的幅度的驱动信号。
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公开(公告)号：US20120133299A1
公开(公告)日：2012-05-31
申请号：US12956429
申请日：2010-11-30
IPC分类号： H05B41/36
CPC分类号： H05B33/0827 , H05B33/0857
摘要： A driver circuit includes a buck converter associated with each LED chain for supplying a load current thereto. The buck converter receives an input voltage and is configured to provide a supply voltage to the associated LED chain such that the resulting load current of the LED chain matches at least approximately a predefined reference current value. The driver circuit further includes a switching converter that receives a driver supply voltage from a power supply and provides, as an output voltage, the input voltage for the buck converters. The switching converter is configured to provide an input voltage to the buck converters such that the maximum of the ratios between the input voltage and the supply voltages provided to the LED chains matches a predefined tolerance reference ratio.
摘要翻译： 驱动器电路包括与每个LED链相关联的降压转换器，用于向其提供负载电流。 降压转换器接收输入电压并且被配置为向相关联的LED链提供电源电压，使得LED链的所得负载电流与至少近似预定的参考电流值相匹配。 驱动器电路还包括开关转换器，其接收来自电源的驱动器电源电压，并提供降压转换器的输入电压作为输出电压。 开关转换器被配置为向降压转换器提供输入电压，使得提供给LED链的输入电压和电源电压之间的最大比率匹配预定义的公差参考比。
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公开(公告)号：US09160559B2
公开(公告)日：2015-10-13
申请号：US13473236
申请日：2012-05-16
IPC分类号： G06F13/00 , H04L12/403 , H04L29/12 , H04L12/26 , H04L12/40
CPC分类号： G06F13/404 , G06F13/364 , H04L12/403 , H04L25/028 , H04L43/50 , H04L61/2038 , H04L2012/40234 , Y04S40/168
摘要： A system includes a bus system, such as a LIN bus system. A number of components are connected to the bus system. A first component of the components is configured to detect a direction of a current to detect a location of the first component in the bus system. Each of the components can have a unique address.
摘要翻译： 系统包括总线系统，例如LIN总线系统。 多个组件连接到总线系统。 组件的第一组件被配置为检测电流的方向以检测总线系统中的第一组件的位置。 每个组件都可以有唯一的地址。
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公开(公告)号：US07944269B2
公开(公告)日：2011-05-17
申请号：US12238531
申请日：2008-09-26
IPC分类号： H01L35/00
CPC分类号： H03K17/0822 , H01L2224/48091 , H01L2224/48145 , H03K2017/0806 , H01L2924/00014 , H01L2924/00012
摘要： Embodiments of the invention are related to a power transistor and a method for controlling a power transistor. In one embodiment a power transistor comprises a power semiconductor body with a plurality of power transistor cells each having a control electrode and a current path. The power transistor furthermore comprises a temperature sensor formed by at least one transistor cell in the power semiconductor body whose control electrode is coupled to one electrode of the current path forming a reversed biased pn-junction.
摘要翻译： 本发明的实施例涉及功率晶体管和用于控制功率晶体管的方法。 在一个实施例中，功率晶体管包括具有多个功率晶体管单元的功率半导体本体，每个功率晶体管单元各自具有控制电极和电流路径。 功率晶体管还包括由功率半导体主体中的至少一个晶体管单元形成的温度传感器，其控制电极耦合到形成反向偏置pn结的电流通路的一个电极。
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公开(公告)号：US08760129B2
公开(公告)日：2014-06-24
申请号：US13340326
申请日：2011-12-29
IPC分类号： H02M3/158
CPC分类号： H02M1/08 , G05F1/618 , H05B33/0815 , H05B33/0818 , Y02B20/347
摘要： A driver circuit, in accordance with one example, includes a controllable current source operably coupled to the load and configured to sink or source a first current in accordance with a control signal. A controllable switch is responsive to an input signal, operably coupled to the current source, and configured to take over, or not, the first current in accordance with an input signal. The first current is directed as a load current through the load when the controllable switch is driven into a blocking state. The first current is directed through the controllable switch when the controllable switch is driven into a conducting state thus bypassing the load. An input signal includes a first series of pulses defining the desired load current waveform in accordance with a desired modulation scheme.
摘要翻译： 根据一个示例，驱动器电路包括可操作地耦合到负载并且被配置为根据控制信号吸收或发射第一电流的可控电流源。 可控开关响应于可操作地耦合到电流源的输入信号，并且被配置为根据输入信号接管或不接收第一电流。 当可控开关被驱动到阻塞状态时，第一电流作为负载电流被引导通过负载。 当可控开关被驱动到导通状态从而绕过负载时，第一电流被引导通过可控开关。 输入信号包括根据期望的调制方案定义所需负载电流波形的第一系列脉冲。
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