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    Self-calibration circuit and method for junction temperature estimation
    2.
    发明公开
    Self-calibration circuit and method for junction temperature estimation 有权
    Selbstkalibrierungsschaltkreis und Verfahren zurVerbindungstemperaturschätzung

    公开(公告)号：EP2336741A1

    公开(公告)日：2011-06-22

    申请号：EP09179980.9

    申请日：2009-12-18

    Applicant: NXP B.V.

    Inventor： Nguyen Hoang, Viet ,  Bancken, Pascal ,  Surdeanu, Radu ,  Bataillou, Benoit ,  van Steenwinckel, David

    IPC: G01K7/01 ,  G01K15/00

    CPC classification number: G01K7/01 ,  G01K15/00 ,  H05B33/089

    Abstract: The present invention relates to a calibration circuit, computer program product, and method of calibrating a junction temperature measurement of a semiconductor element, wherein respective forward voltages at junctions of the semiconductor element and a reference temperature sensor are measured, and an absolute ambient temperature is determined by using the reference temperature sensor, and the junction temperature of the semiconductor element is predicted based on the absolute ambient temperature and the measured forward voltages.

    Abstract translation: 本发明涉及校准电路，计算机程序产品和校准半导体元件的结温度测量的方法，其中测量半导体元件和基准温度传感器的接合处的各个正向电压，绝对环境温度为 通过使用参考温度传感器确定，并且基于绝对环境温度和所测量的正向电压来预测半导体元件的结温。

    Apparatus for regulating the temperature of a light emitting diode
    5.
    发明授权
    Apparatus for regulating the temperature of a light emitting diode 有权
    Vorrichtung zur Temperaturregelung einer Leuchtdiode

    公开(公告)号：EP2315285B1

    公开(公告)日：2014-06-04

    申请号：EP09173748.6

    申请日：2009-10-22

    Applicant: NXP B.V.

    Inventor： Bancken, Pascal ,  Nguyen Hoang, Viet ,  Surdeanu, Radu ,  Bataillou, Benoit ,  van Steenwinckel, David

    IPC: H01L33/64 ,  H01L33/48 ,  F21V29/00 ,  F21Y101/02

    CPC classification number: H01L33/642 ,  F21V29/70 ,  F21Y2115/10 ,  H01L33/483 ,  H01L33/486 ,  H01L2924/0002 ,  H01L2924/00

    Abstract: Apparatus (10) for regulating the temperature of a light emitting diode (LED) (2). The apparatus (10) includes a heat sink (4), an LED mount (6), and an LED (2) mounted on the LED mount (6). The LED mount (6) is configured to change shape in response to a change in temperature. The change in shape alters the position of the LED (2) relative to the heat sink (4), for adjusting heat transfer between the LED (2) and the heat sink (4). The LED mount (6) may include a laminated portion (18,28) such as a bi-metallic strip.

    Abstract translation: 用于调节发光二极管（LED）（2）的温度的装置（10）。 装置（10）包括散热器（4），LED安装座（6）和安装在LED支架（6）上的LED（2）。 LED支架（6）被配置为响应于温度变化而改变形状。 形状的改变改变了LED（2）相对于散热器（4）的位置，用于调节LED（2）和散热器（4）之间的热传递。 LED支架（6）可以包括诸如双金属条的层压部分（18,28）。

    System and method for controlling LED cluster
    7.
    发明公开
    System and method for controlling LED cluster 审中-公开
    系统和Verfahren zur Steuerung eines LED集群

    公开(公告)号：EP2273851A2

    公开(公告)日：2011-01-12

    申请号：EP09163687.8

    申请日：2009-06-24

    Applicant: NXP B.V.

    Inventor： Nguyen, Viet ,  Bancken, Pascal ,  Surdeanu, Radu ,  Lammers, Matheus ,  Deurenberg, Peter

    IPC: H05B33/08

    CPC classification number: H05B33/0818 ,  G09G3/2003 ,  G09G3/3426 ,  G09G2320/041 ,  G09G2360/145 ,  H05B33/0827 ,  H05B33/0851 ,  H05B33/0866 ,  H05B33/0869

    Abstract: In one embodiment, a control system is for controlling a lighting system which comprises a cluster (20) of different colour LEDs. The control system comprises a first control unit (24) for generating amplitude values for the different LEDs of the cluster to provide a desired colour point and a second control unit (38) for controlling pulse width values for the different LEDs to provide a desired brightness. Current sources (32) are provided for individually driving the LEDs of the cluster.
    This system allows the control of colour point to be independent from the control of brightness of the LED cluster. This provides a low cost solution and a fast, accurate and flexible control to a LED cluster.

    Abstract translation: 在一个实施例中，控制系统用于控制包括不同颜色LED的簇（20）的照明系统。 所述控制系统包括用于产生所述簇的不同LED的振幅值以提供所需色点的第一控制单元（24）和用于控制所述不同LED的脉冲宽度值以提供期望亮度的第二控制单元（38） 。 提供电流源（32）用于单独驱动集群的LED。 该系统允许将色点的控制独立于LED簇的亮度控制。 这为LED集群提供了低成本的解决方案和快速，准确和灵活的控制。

    An active thermal management device and thermal management method
    9.
    发明授权
    An active thermal management device and thermal management method 有权
    有源热管理装置和热管理的方法

    公开(公告)号：EP2505913B1

    公开(公告)日：2016-03-23

    申请号：EP11160459.1

    申请日：2011-03-30

    Applicant: NXP B.V.

    Inventor： Surdeanu, Radu ,  Lenoble, Damien

    IPC: F21V29/00 ,  F21V29/50 ,  F21Y115/10

    CPC classification number: F21V29/54 ,  F21S2/005 ,  F21V29/00 ,  F21V29/50 ,  F21V29/51 ,  F21V29/71 ,  F21Y2115/10 ,  F28D20/02 ,  F28D2021/0029 ,  F28F2013/008 ,  H01L23/427 ,  H01L23/4275 ,  H01L33/62 ,  H01L2924/0002 ,  H01L2924/00

    Abstract: An active thermal management device and method are disclosed, in which a phase change material unit, comprising one or more phase change material arranged in thermally in series or parallel, is connectable to a source of thermal energy, such as a group of LEDs at a first operating condition. Thermal energy from the source of thermal energy is stored in the phase change material unit. The phase change material unit is connectable to a sink of thermal energy, such as a second group of LEDs at a second operating condition. The thermal energy stored in the phase change material unit may be re-used by connecting the sink of thermal energy. In one embodiment, the first operating condition includes a supply voltage of 15V, and the second operating condition includes either no supply voltage, or a lower supply voltage of 9V, such that excess heat from the first group of of LEDs, which may be over-temperature, can be re-used to pre-heat the second group of LEDs, thereby improving the thermal matching and thus optical matching.

    Solid state lighting element, peak wavelength estimation method and binning method
    10.
    发明公开
    Solid state lighting element, peak wavelength estimation method and binning method 审中-公开
    Festkörperbeleuchtungselement，Spitzenwellenlängenschätzungsverfahrenund Klassifizierungsverfahren

    公开(公告)号：EP2746792A1

    公开(公告)日：2014-06-25

    申请号：EP12198633.5

    申请日：2012-12-20

    Applicant: NXP B.V.

    Inventor： Surdeanu, Radu ,  Buscema, Michele ,  Cox, Matthijs ,  Koenderink, Femius

    IPC: G01R31/26 ,  H01S5/00 ,  H01L21/66

    CPC classification number: G01R31/2635 ,  H05B33/0818 ,  H05B33/086 ,  H05B33/0866 ,  H05B33/0869

    Abstract: Disclosed is a method of estimating a peak wavelength of a solid state lighting element, the method comprising determining (330) a thermal admittance spectrum of the solid state lighting element, said spectrum identifying the energy levels of the trap states in the band gap of the solid state lighting element; identifying (350) the shallow trap states in said spectrum; and estimating (370) said peak wavelength from the respective energy gaps between the identified shallow trap states and the band gap boundary. A binning method for characterizing solid state lighting elements utilizing this estimation method and a solid state lighting element adapted to implement this estimation method are also disclosed.

    Abstract translation: 公开了一种估计固体照明元件的峰值波长的方法，该方法包括确定（330）固态照明元件的导热光谱，所述光谱识别在所述固态照明元件的带隙中的陷阱状态的能级 固态照明元件; 识别（350）所述光谱中的浅陷阱状态; 以及从所识别的浅阱状态和带隙边界之间的相应能隙估计（370）所述峰值波长。 还公开了利用该估计方法表征固态照明元件的组合方法和适于实现该估计方法的固态照明元件。

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