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    • 1. 发明授权
    • Failure detection for series of electrical loads
    • 一系列电气负载故障检测
    • US08044667B2
    • 2011-10-25
    • US12426577
    • 2009-04-20
    • Fabrizio CortigianiAndrea LogiudiceAndreas Eder
    • Fabrizio CortigianiAndrea LogiudiceAndreas Eder
    • G01R31/08
    • H05B33/0887
    • 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.
    • 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。
    • 2. 发明申请
    • Failure Detection for Series of Electrical Loads
    • 电力系列故障检测
    • US20100264828A1
    • 2010-10-21
    • US12426577
    • 2009-04-20
    • Fabrizio CortigianiAndrea LogiudiceAndreas Eder
    • Fabrizio CortigianiAndrea LogiudiceAndreas Eder
    • H05B37/03
    • H05B33/0887
    • 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.
    • 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。
    • 3. 发明授权
    • Failure detection for series of electrical loads
    • 一系列电气负载故障检测
    • US08860427B2
    • 2014-10-14
    • US13221562
    • 2011-08-30
    • Fabrizio CortigianiAndrea LogiudiceAndreas EderGiovanni Capodivacca
    • Fabrizio CortigianiAndrea LogiudiceAndreas EderGiovanni Capodivacca
    • G01R31/08H05B33/08
    • H05B33/0887H05B33/0845
    • 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.
    • 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。
    • 4. 发明申请
    • Failure Detection for Series of Electrical Loads
    • 电力系列故障检测
    • US20120074947A1
    • 2012-03-29
    • US13221562
    • 2011-08-30
    • Fabrizio CortigianiAndrea LogiudiceAndreas EderGiovanni Capodivacca
    • Fabrizio CortigianiAndrea LogiudiceAndreas EderGiovanni Capodivacca
    • G01R31/26
    • H05B33/0887H05B33/0845
    • 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.
    • 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。
    • 7. 发明申请
    • Multi Channel LED Driver
    • 多通道LED驱动器
    • US20120133299A1
    • 2012-05-31
    • US12956429
    • 2010-11-30
    • Giovanni CapodivaccaFabrizio CortigianiAndrea Scenini
    • Giovanni CapodivaccaFabrizio CortigianiAndrea Scenini
    • H05B41/36
    • H05B33/0827H05B33/0857
    • 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.
    • 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。
    • 10. 发明授权
    • Low EMI driver circuit
    • 低EMI驱动电路
    • US08760129B2
    • 2014-06-24
    • US13340326
    • 2011-12-29
    • Fabrizio CortigianiFranco Mignoli
    • Fabrizio CortigianiFranco Mignoli
    • H02M3/158
    • H02M1/08G05F1/618H05B33/0815H05B33/0818Y02B20/347
    • 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.
    • 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。