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1. 发明申请

WO2010106453A1 METHOD OF CONTROLLING AN LED, AND AN LED CONTROLLER 审中-公开
标题翻译：控制LED的方法和LED控制器
公开(公告)号：WO2010106453A1
公开(公告)日：2010-09-23
申请号：PCT/IB2010/050822
申请日：2010-02-25
申请人： NXP B.V. , DEURENBERG, Peter Hubertus Franciscus , KOOLEN, Gert-Jan , HOOGZAAD, Gian , SURDEANU, Radu , BANCKEN, Pascal , BATAILLOU, Benoit , NGUYEN HOANG, Viet
发明人： DEURENBERG, Peter Hubertus Franciscus , KOOLEN, Gert-Jan , HOOGZAAD, Gian , SURDEANU, Radu , BANCKEN, Pascal , BATAILLOU, Benoit , NGUYEN HOANG, Viet
IPC分类号： H05B33/08
CPC分类号： H05B33/086 , H05B33/0815 , H05B33/0848
摘要： A method is disclosed of controlling a LED, comprising driving the LED with a DC current for a first time, interrupting the DC current for a second time such that the first time and the second time sum to a period, determining at least one characteristic of the LED whilst the DC current is interrupted, and controlling the DC current during a subsequent period in dependence on the at least one characteristic. The invention thus benefits from the simplicity of DC operation. By operating at the LED in a DC mode, rather than say in a PWM mode, the requirement to be able to adjust the duty cycle is avoided. By including interruptions to the DC current, it is possible to utilise the LED itself to act as a sensor in order to determine a characteristic of the LED. The need for additional sensors is thereby avoided.
摘要翻译：公开了一种控制LED的方法，包括第一次用DC电流驱动LED，第二次中断DC电流，使得第一时间和第二时间总和到一个周期，确定至少一个特性所述LED在DC电流中断期间，并且根据所述至少一个特性在随后的时段期间控制所述DC电流。因此，本发明由于DC操作的简单性而受益。通过在DC模式下操作LED，而不是在PWM模式下说明，可以避免能够调整占空比的要求。通过包含直流电流的中断，可以利用LED本身作为传感器，以便确定LED的特性。从而避免了对附加传感器的需要。

2. 发明申请

WO2010049882A3 LIGHTING UNIT WITH TEMPERATURE PROTECTION 审中-公开
公开(公告)号：WO2010049882A3
公开(公告)日：2010-05-06
申请号：PCT/IB2009/054737
申请日：2009-10-27
申请人： NXP B.V. , NGUYEN HOANG, Viet , BANCKEN, Pascal , SURDEANU, Radu , BATAILLOU, Benoit , DEURENBERG, Peter Hubertus Franciscus , KOOLEN, Gert-Jan , HOOGZAAD, Gian
发明人： NGUYEN HOANG, Viet , BANCKEN, Pascal , SURDEANU, Radu , BATAILLOU, Benoit , DEURENBERG, Peter Hubertus Franciscus , KOOLEN, Gert-Jan , HOOGZAAD, Gian
IPC分类号： H05B33/08
摘要： A method of operating a light emitting diode (1 ) comprises operating the light emitting diode to provide a desired brightness output and estimating the junction temperature of the light emitting diode based on electrical drive parameters of the light emitting diode. A threshold is derived which determines if there is overheating, and the light emitting diode is operated within the threshold. This method uses junction temperature estimation to implement a system which provides protection from overheating. The method allows an LED to be used at its maximum potential in term of light generation whilst avoiding the need for external temperature measurement.

3. 发明申请

WO2010004475A1 A SWITCHED MODE POWER CONVERTER AND METHOD OF OPERATING THE SAME 审中-公开
标题翻译：一种开关式功率转换器及其运行方法
公开(公告)号：WO2010004475A1
公开(公告)日：2010-01-14
申请号：PCT/IB2009/052826
申请日：2009-06-30
申请人： NXP B.V. , DEURENBERG, Peter Hubertus Franciscus , HOOGZAAD, Gian
发明人： DEURENBERG, Peter Hubertus Franciscus , HOOGZAAD, Gian
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0818 , H05B33/083 , Y02B20/346
摘要： A switched mode power converter is disclosed, together with a method for operating the same. The power converter is adapted to be operable in the boundary conduction mode, and operation is interruptible in the absence of any load requirement.
摘要翻译：公开了一种开关式功率转换器及其操作方法。功率转换器适于在边界传导模式下可操作，并且在没有任何负载要求的情况下操作是可中断的。

4. 发明申请

WO2009095854A2 LED DRIVER CIRCUIT AND METHOD, AND SYSTEM AND METHOD FOR ESTIMATING THE JUNCTION TEMPERATURE OF A LIGHT EMITTING DIODE 审中-公开
标题翻译： LED驱动电路和方法，以及用于估计发光二极管的连接温度的系统和方法
公开(公告)号：WO2009095854A2
公开(公告)日：2009-08-06
申请号：PCT/IB2009/050326
申请日：2009-01-27
申请人： NXP B.V. , HOOGZAAD, Gian , SCHMITZ, Hans , LANGESLAG, Wilhelmus, H., M. , SURDEANU, Radu
发明人： HOOGZAAD, Gian , SCHMITZ, Hans , LANGESLAG, Wilhelmus, H., M. , SURDEANU, Radu
IPC分类号： H05B33/08
CPC分类号： H05B33/0818 , G01K7/01
摘要： A driver circuit (10) for a light emitting diode comprises a first driver circuit (32, 32', 32') for generating a first current output for driving the light emitting diode, wherein the first driver circuit has a control switch for interrupting the supply of the first current output. A second driver circuit (50) is for generating a second current output for driving the light emitting diode, and the second driver circuit also has a control switch for interrupting the supply of the second current output. The overall output of the driver circuit comprises a pulse width modulated output current which alternates between a high current (I high ) generated by the first driver circuit and a low current (I |OW ) generated by the second driver circuit. By providing separate driver circuits for two different current requirements, the circuits can be optimised for each function. For example the high current value can comprise an LED operation current, and the low current value can comprise a non-zero measurement current.
摘要翻译：用于发光二极管的驱动电路（10）包括用于产生用于驱动发光二极管的第一电流输出的第一驱动电路（32,32'，32'），其中第一驱动电路具有用于中断提供第一个电流输出。第二驱动电路（50）用于产生用于驱动发光二极管的第二电流输出，并且第二驱动电路还具有用于中断第二电流输出的供给的控制开关。驱动电路的总体输出包括在由第一驱动电路产生的高电流（Ihigh）和由第二驱动电路产生的低电流（I | OW）之间交替的脉宽调制输出电流。通过为两种不同的电流要求提供单独的驱动电路，可以针对每个功能优化电路。例如，高电流值可以包括LED操作电流，并且低电流值可以包括非零测量电流。

5. 发明申请

WO2007057817A3 DRIVER FOR AN INDUCTIVE LOAD 审中-公开
公开(公告)号：WO2007057817A3
公开(公告)日：2007-05-24
申请号：PCT/IB2006/054166
申请日：2006-11-08
申请人： NXP B.V. , HOOGZAAD, Gian
发明人： HOOGZAAD, Gian
IPC分类号： H02P25/02 , H02M7/5387
摘要： A driver (1) supplies an output voltage (VL) to an inductive load (30). The driver comprises an input to receive a pulse width modulated control signal (CS) having a controllable duty cycle within a predetermined range. A first switch circuit (10) receives a first switch signal (CS; ICS) to supply a first voltage (Vl), a second switch circuit (13) receives a second switch signal (DCS; CSD) to supply a second voltage (V2), and the output voltage (VL) is the difference between the first voltage (Vl) and the second voltage (V2). An inverter (11; 15) and delay circuit (12; 16) receives the control signal (CS) to supply the first switch signal (CS; ICS) and the second switch signal (DCS; CSD) being inverted and delayed with respect to each other. The delay (dT) of the delay circuit (12; 16) is selected to obtain an output voltage having a single polarity for each one of said controllable duty cycles within the predetermined range.

6. 发明申请

WO2009153675A2 POWER SUPPLY COMPRISING MULTIPLE OUTPUTS 审中-公开
标题翻译：电源包含多个输出
公开(公告)号：WO2009153675A2
公开(公告)日：2009-12-23
申请号：PCT/IB2009/051907
申请日：2009-05-08
申请人： NXP B.V. , SCHMID, Markus , DUERBAUM, Thomas, A. , HOOGZAAD, Gian , LARO, Peter , KUEBRICH, Johan, B., D.
发明人： SCHMID, Markus , DUERBAUM, Thomas, A. , HOOGZAAD, Gian , LARO, Peter , KUEBRICH, Johan, B., D.
CPC分类号： H02M1/4258 , H02M2001/007 , H02M2001/008 , H02M2001/009 , Y02B70/126
摘要： The present application relates to a power factor correction stage, and more particularly, to a switch mode power supply comprising the liquid crystal display device. Thepower factor correction stage comprises a rectifying circuit connectable to an alternating current energysupply. The power factor correction stage comprises a transformer circuit configured to galvanically insulate the alternating current energy 5 supply from atleast one load. The transformer circuit comprises at least one power factor correcting inductor. The transformer circuit comprises at least one primary inductor formed by a first inductor. The transformer circuit comprises a first secondary inductor coupled to the primary inductor via a core. The transformer circuit comprises at least a second secondaryinductor coupled to the primary inductor via the core, wherein 10 the secondaryinductors are formed such that at least one output voltage of the transformer circuit is adjusted according to requirements of the at least one load.
摘要翻译：本申请涉及功率因数校正级，更具体地，涉及包括液晶显示装置的开关模式电源。功率因数校正级包括可连接到交流供能的整流电路。功率因数校正级包括被配置为使至少一个负载的交流电力5电源电绝缘的变压器电路。变压器电路包括至少一个功率因数校正电感器。变压器电路包括由第一电感器形成的至少一个初级电感器。变压器电路包括经由芯耦合到初级电感器的第一次级电感器。所述变压器电路包括经由所述芯耦合到所述初级电感器的至少第二次级电感器，其中所述辅助电感器形成为使得所述变压器电路的至少一个输出电压根据所述至少一个负载的要求被调整。

7. 发明申请

WO2008068682A1 ELECTRONIC DEVICE FOR DRIVING LIGHT EMITTING DIODES 审中-公开
标题翻译：用于驱动发光二极管的电子设备
公开(公告)号：WO2008068682A1
公开(公告)日：2008-06-12
申请号：PCT/IB2007/054843
申请日：2007-11-29
申请人： NXP B.V. , HOOGZAAD, Gian , PANSIER, Frans
发明人： HOOGZAAD, Gian , PANSIER, Frans
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0818 , H05B33/0824 , H05B33/0851 , H05B37/02
摘要： The present invention relates to an electronic device for driving a light emitting diode, which includes a switch (Ts) being adapted to switch a switch-mode power converter, and controlling means (CNTL) being adapted for controlling the switch (Ts) in response to a sensing value (Vs) indicative of a current of the switch-mode power converter and for controlling by the switch (Ts) the output voltage of the switched power converter and a current (Iout) through the light emitting diode.
摘要翻译：本发明涉及一种用于驱动发光二极管的电子设备，其包括适于切换开关模式功率转换器的开关（Ts），以及适于响应于控制开关（Ts）的控制装置（CNTL）到表示开关模式功率转换器的电流的感测值（Vs），并且用于通过开关（Ts）控制切换的功率转换器的输出电压和通过发光二极管的电流（Iout）。

8. 发明申请

WO2008068681A1 ELECTRONIC DEVICE FOR DRIVING LED STRINGS 审中-公开
标题翻译：用于驱动LED灯的电子设备
公开(公告)号：WO2008068681A1
公开(公告)日：2008-06-12
申请号：PCT/IB2007/054842
申请日：2007-11-29
申请人： NXP B.V. , DEIXLER, Peter , HOOGZAAD, Gian
发明人： DEIXLER, Peter , HOOGZAAD, Gian
IPC分类号： H05B33/08
CPC分类号： H05B33/0851 , H05B33/0818 , H05B33/0827
摘要： The present invention relates to an electronic device for driving at least a first channel (CHA) and a second channel (CHB) of light emitting diodes (LED). The electronic device includes driving means having a first and a second driving portion for driving the first and the second channel (CHA, CHB) of light emitting diodes separately, and configuration 5 means for providing configurability of the driving means for using the driving means at least partially in a shared manner for more than one channel of light emitting diodes.
摘要翻译：本发明涉及用于驱动发光二极管（LED）的至少第一通道（CHA）和第二通道（CHB）的电子设备。电子设备包括驱动装置，其具有用于分别驱动发光二极管的第一和第二通道（CHA，CHB）的第一和第二驱动部分，以及配置5，用于提供驱动装置的可配置性的装置，最不部分地以多于一个通道的发光二极管的共享方式。

9. 发明申请

WO2008004177A3 METHOD FOR CONTROLLING A DECELERATION PROCESS OF A DC MOTOR AND CONTROLLER 审中-公开
公开(公告)号：WO2008004177A3
公开(公告)日：2008-01-10
申请号：PCT/IB2007/052572
申请日：2007-07-03
申请人： NXP B.V. , HOOGZAAD, Gian
发明人： HOOGZAAD, Gian
IPC分类号： H02P3/08 , H02P27/08 , H02P23/00 , H02M1/32 , H02M7/5387
摘要： The invention is directed to a method for controlling a deceleration process of a DC motor (20), wherein the DC motor (20) is driven by a bridge driver (18) coupled to a power supply (12) intended to provide a supply voltage VDD at a power supply output (14), the method comprising the following steps: applying a deceleration PWM signal to the bridge driver (18) for decelerating the DC motor (20), and controlling the bridge driver (18) such that a motor-induced back current is reduced, if the voltage at the power supply output (14) exceeds a first voltage threshold which is higher than VDD. In accordance with the invention the method comprises the following step: if the voltage at the power supply output (14) falls below a second voltage threshold which is lower than the first voltage threshold, terminating controlling the bridge driver (18) such that the motor-induced back current is reduced. The invention is also directed to a controller (10) for controlling a deceleration process of a DC motor (20) which is driven by a bridge driver (18) coupled to a power supply (12) intended to provide a supply voltage VDD at a power supply output (14), the controller (10) comprising: means (22) for applying a deceleration PWM signal to the bridge driver for decelerating the DC motor, and means (24, 26, 28; 24, 30) for controlling the bridge driver (18) such that the motor-induced back current is reduced, if the voltage at the power supply output (14) exceeds a first voltage threshold which is higher than VDD. In accordance with the invention the means for controlling the bridge driver (18) such that the motor-induced back current is reduced are adapted to terminate controlling the bridge driver (18) such that the motor-induced back current is reduced, if the voltage at the power supply output (14) falls below a second voltage threshold which is lower than the first voltage threshold.

10. 发明申请

WO2009138908A1 METHOD AND CIRCUIT ARRANGEMENT FOR CYCLE-BY-CYCLE CONTROL OF A LED CURRENT FLOWING THROUGH A LED CIRCUIT ARRANGEMENT, AND ASSOCIATED CIRCUIT COMPOSITION AND LIGHTING SYSTEM 审中-公开
标题翻译：通过LED电路布置的LED电流循环周期控制的方法和电路布置，以及相关电路组成和照明系统
公开(公告)号：WO2009138908A1
公开(公告)日：2009-11-19
申请号：PCT/IB2009/051861
申请日：2009-05-06
申请人： NXP B.V. , HOOGZAAD, Gian , LANGESLAG, Wilhelmus, H., M. , PANSIER, Frans , ZHANG, Cheng
发明人： HOOGZAAD, Gian , LANGESLAG, Wilhelmus, H., M. , PANSIER, Frans , ZHANG, Cheng
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/083
摘要： The invention provides a method for cycle-by-cycle control of a LED current (ILED) flowing through a LED circuit arrangement (LEDCIRC) at a mean LED current level. The method comprises a) establishing a converter current (IL), b) establishing an oscillation of the converter current (IL) between substantially a valley current level and substantially a peak current level, c) feeding the LED circuit arrangement (LEDCIRC) with the converter current (IL) as the LED current during a part of an oscillation cycle of the oscillation of the converter current, d) determining a current level correction for compensating a current level error between an integral over an oscillation cycle of the LED current and a reference, the reference being representative of the mean LED current level, and e) adjusting at least one of the valley current level and the peak current level with the current level correction for use in a successive cycle of the oscillation of the converter current. The invention also provides a circuit arrangement operable for using the method, a LED driver IC using the circuit arrangement, a circuit composition with at least one LED and the circuit arrangement, and a lighting system with the circuit composition.
摘要翻译：本发明提供了一种在平均LED电流水平下逐步控制流过LED电路装置（LEDCIRC）的LED电流（ILED）的方法。该方法包括：a）建立转换器电流（IL），b）建立基本上谷值电流水平和基本上峰值电流水平之间的转换器电流（IL）的振荡，c）将LED电路装置（LEDCIRC）馈送到在转换器电流的振荡的振荡周期的一部分期间，转换器电流（IL）作为LED电流，d）确定用于补偿LED电流的振荡周期之间的积分和电流水平误差的电流电平校正，参考，该参考代表平均LED电流电平，以及e）利用当前电平校正来调整谷电流电平和峰值电流电平中的至少一个，以用于转换器电流的振荡的连续循环。本发明还提供一种可用于使用该方法的电路装置，使用电路装置的LED驱动器IC，具有至少一个LED的电路组合和电路装置，以及具有电路组成的照明系统。

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