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公开(公告)号：US07852300B2
公开(公告)日：2010-12-14
申请号：US11701774
申请日：2007-02-02
CPC分类号： H05B33/0815 , Y02B20/347
摘要： An exemplary apparatus embodiment provides a plurality of operating modes for solid state lighting, such as a flash mode and a constant or background lighting mode for use with devices such as cameras. An exemplary apparatus comprises a memory adapted to store a plurality of average current parameters; and a controller adapted to modulate an energizing cycle time period (“T”) for providing power to the solid state lighting as proportional to the product of the selected average current parameter (“a”) and a reset time period (“TR”) for an inductor current to return to a substantially zero level from a predetermined peak level (T∝a·TR). The average current parameter is predetermined as substantially proportional to a ratio of a peak inductor current level (“IP”) to an average output D.C. current level ( “ I O ” ) ( a ∝ I P I O ) .
摘要翻译： 示例性装置实施例提供用于固态照明的多种操作模式，诸如闪光模式和用于诸如相机的装置的恒定或背景照明模式。 示例性装置包括适于存储多个平均电流参数的存储器; 以及控制器，适于调制与所选择的平均当前参数（“a”）和复位时间段（“TR”）的乘积成比例的向固态照明提供电力的通电周期时间段（“T”）， 使电感电流从预定的峰值电平（Tαa·TR）返回到基本上为零电平。 平均电流参数被预先确定为与峰值电感器电流电平（“IP”）与平均输出直流电流水平（“I O”）（aαI P I O）的比率成正比。
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公开(公告)号：US20100213859A1
公开(公告)日：2010-08-26
申请号：US12639255
申请日：2009-12-16
IPC分类号： H05B37/02
CPC分类号： H05B37/02 , H05B33/0815 , H05B33/0851 , Y02B20/347
摘要： Exemplary embodiments provide an apparatus, system and method for power conversion to provide power to solid state lighting, and which may be coupled to a first switch, such as a dimmer switch. An exemplary system for power conversion comprises: a switching power supply comprising a second, power switch; solid state lighting coupled to the switching power supply; a voltage sensor; a current sensor; a memory; a first adaptive interface circuit to provide a resistive impedance to the first switch and conduct current from the first switch in a default mode; a second adaptive interface circuit to create a resonant process when the first switch turns on; and a controller to modulate the second adaptive interface circuit when the first switch turns on to provide a current path during the resonant process of the switching power supply.
摘要翻译： 示例性实施例提供了一种用于功率转换以向固态照明提供电力的装置，系统和方法，并且其可以耦合到诸如调光器开关的第一开关。 用于电力转换的示例性系统包括：开关电源，包括第二电源开关; 固态照明耦合到开关电源; 电压传感器; 电流传感器; 记忆 第一自适应接口电路，用于向第一开关提供电阻性阻抗，并以默认模式传导来自第一开关的电流; 第二自适应接口电路，用于当第一开关导通时产生谐振过程; 以及控制器，用于当所述第一开关导通时调制所述第二自适应接口电路，以在所述开关电源的谐振处理期间提供电流路径。
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公开(公告)号：US20100045187A1
公开(公告)日：2010-02-25
申请号：US12497682
申请日：2009-07-05
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , G05F1/618 , H02M3/157 , H02M2001/0009 , H05B33/0818 , H05B33/0845 , H05B33/0854 , H05B33/086 , H05B33/0869 , H05B33/0872 , H05B33/0884 , H05B33/0887 , H05B37/02 , H05B37/0218 , H05B37/0227 , Y02B20/341
摘要： A system drives one or plurality of LEDs, regulating their brightness by controlling LEDs average current or voltage. The system includes a switching power converter and an integrated digital regulator with at least one of electrical, thermal and optical feedbacks. The regulator is constructed as a hysteretic peak current mode controller for continuous mode of operation of the power converter. For discontinuous mode of operation of the power converter a pulse averaging sliding mode control is being used. Average LED current is measured by integrating LED pulse current at off time and hysteretically adjusting on time of the power switch. Input battery is protected from discharging at abnormally low impedance of the output.
摘要翻译： 系统驱动一个或多个LED，通过控制LED平均电流或电压来调节其亮度。 该系统包括开关电源转换器和具有电，热和光反馈中的至少一个的集成数字调节器。 调节器被构造为用于功率转换器的连续运行模式的迟滞峰值电流模式控制器。 对于功率转换器的不连续运行模式，正在使用脉冲平均滑模控制。 通过在关闭时间集成LED脉冲电流并根据电源开关的时间进行滞后调节来测量平均LED电流。 输入电池防止输出异常低阻抗放电。
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公开(公告)号：US20100026208A1
公开(公告)日：2010-02-04
申请号：US12181686
申请日：2008-07-29
IPC分类号： H05B37/02
CPC分类号： H02M3/33507 , H05B33/08 , H05B33/0815 , H05B37/02 , Y10T307/406
摘要： An apparatus, method and system are provided for power conversion to supply power to a load such as a plurality of light emitting diodes. An exemplary apparatus comprises: a first power converter stage having a first power switch and a first inductive element; a second power converter stage having a second power switch and a second inductive element; a plurality of sensors; and a controller. The second power converter stage provides an output current to the load. The controller is adapted to use a sensed input voltage to determine a switching period, and is further adapted to turn the first and second power switches into an on-state at a frequency substantially corresponding to the switching period while maintaining a switching duty cycle within a predetermined range.
摘要翻译： 提供了一种用于功率转换以向诸如多个发光二极管的负载供电的装置，方法和系统。 示例性装置包括：具有第一电源开关和第一电感元件的第一电力转换器级; 具有第二电源开关和第二电感元件的第二电力转换器级; 多个传感器; 和控制器。 第二个功率转换器级向负载提供输出电流。 控制器适于使用感测的输入电压来确定开关周期，并且还适于将第一和第二功率开关转换成基本对应于开关周期的频率的导通状态，同时保持开关占空比在 预定范围。
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公开(公告)号：US20090251934A1
公开(公告)日：2009-10-08
申请号：US12098443
申请日：2008-04-06
CPC分类号： H05B33/0815 , H02M3/155 , H02M3/157
摘要： An apparatus method and system are provided for power conversion, to supply power to a nonlinear load such as a plurality of light emitting diodes. An exemplary apparatus comprises a first power converter stage, a second power converter stage, a plurality of sensors such as first and second sensors, and a controller. The first power converter stage includes a power switch and a first inductor having a first inductance. The first and second sensors are both coupled to a common reference node, with the first sensor adapted to sense a first parameter of the first power converter stage, and the second sensor adapted to sense the output current level. The second power converter stage includes a second inductor having a second inductance, and is coupleable to provide an output current to the nonlinear load such as LEDs. The controller is coupled to the power switch, the first sensor and the second sensor, and the controller is adapted to turn the power switch into an on state for an on-time duration substantially proportional to a ratio of the second inductance to the first inductance.
摘要翻译： 提供了用于功率转换的装置方法和系统，以向诸如多个发光二极管的非线性负载供电。 示例性装置包括第一功率转换器级，第二功率转换器级，诸如第一和第二传感器的多个传感器以及控制器。 第一功率转换器级包括电源开关和具有第一电感的第一电感器。 第一和第二传感器都耦合到公共参考节点，其中第一传感器适于感测第一功率转换器级的第一参数，并且第二传感器适于感测输出电流电平。 第二功率转换器级包括具有第二电感的第二电感器，并且可耦合以向诸如LED的非线性负载提供输出电流。 控制器耦合到电源开关，第一传感器和第二传感器，并且控制器适于将功率开关转换到接通状态，导通时间基本上与第二电感与第一电感的比率成比例 。
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公开(公告)号：US07956554B2
公开(公告)日：2011-06-07
申请号：US11927263
申请日：2007-10-29
CPC分类号： H05B33/0872 , G09G3/3413 , G09G3/342 , G09G2320/0242 , G09G2320/041 , G09G2320/064 , G09G2320/0666 , G09G2330/06 , H05B33/0818 , H05B33/086 , H05B33/0866
摘要： Exemplary embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures.
摘要翻译： 本发明的示例性实施例提供了一种控制从固态照明系统发射的光的强度和光谱的系统，装置和方法。 固态照明在全强度和选定温度下具有第一发射光谱，第一电偏压用于固态照明产生第一波长偏移，第二电偏压用于固态照明，产生第二相对波长 转移。 示例性实施例提供用于接收指定所选择的强度水平或选定温度的信息; 以及向所述固态照明提供组合的第一电偏置和第二电偏置以产生具有所选强度水平的发射光，并且在预定温度范围内具有在所述第一发射光谱的预定变化范围内的第二发射光谱。
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公开(公告)号：US20110115411A1
公开(公告)日：2011-05-19
申请号：US12940257
申请日：2010-11-05
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , Y02B20/347
摘要： An exemplary apparatus embodiment provides a plurality of operating modes for solid state lighting, such as a flash mode and a constant or background lighting mode for use with devices such as cameras. An exemplary apparatus comprises a memory adapted to store a plurality of average current parameters; and a controller adapted to modulate an energizing cycle time period (“T”) for providing power to the solid state lighting as proportional to the product of the selected average current parameter (“α”) and a reset time period (“TR”) for an inductor current to return to a substantially zero level from a predetermined peak level (T∝α·TR). The average current parameter is predetermined as substantially proportional to a ratio of a peak inductor current level (“IP”) to an average output D.C. current level (“IO”)(α∝IP/IO).
摘要翻译： 示例性装置实施例提供用于固态照明的多种操作模式，诸如闪光模式和用于诸如相机的装置的恒定或背景照明模式。 示例性装置包括适于存储多个平均电流参数的存储器; 以及控制器，其适于调制与所选择的平均当前参数（“α”）和复位时间段（“TR”）的乘积成比例的向固态照明提供电力的通电周期时间段（“T”）， 用于使电感电流从预定的峰值电平（Tαα·TR）返回到基本零电平。 平均电流参数预定为与峰值电感器电流电平（“IP”）与平均输出直流电流（“IO”）（ααIP/ IO）的比率基本成比例。
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8.发明授权Pulsed current averaging controller with amplitude modulation and time division multiplexing for arrays of independent pluralities of light emitting diodes 有权具有幅度调制和时分复用的脉冲电流平均控制器，用于独立多个发光二极管的阵列公开(公告)号：US07888881B2
公开(公告)日：2011-02-15
申请号：US11494440
申请日：2006-07-27
IPC分类号： H05B37/02
CPC分类号： H05B33/0818 , H05B33/0815 , Y02B20/347
摘要： Exemplary embodiments provide a system, method and apparatus for regulating current in loads, such as in an array of independent pluralities of light emitting diodes (“LEDs”). An exemplary system comprises a multiplexer adapted to switch current to each independent string of LEDs; a first controller to maintain a substantially constant average current level to the plurality of LEDs; and a second controller to modulate a current amplitude and duration of time division multiplexing for each independent string of LEDs. Another aspect of the system provides for modulating the on time for switching current to maintain a substantially constant average current level and to respond and converge quickly to changing current reference levels.
摘要翻译： 示例性实施例提供了用于调节负载中的电流的系统，方法和装置，例如在独立多个发光二极管（“LED”）的阵列中。 示例性系统包括多路复用器，其适于将电流切换到每个独立的LED串; 第一控制器，用于维持对所述多个LED的基本恒定的平均电流电平; 以及第二控制器，用于调制每个独立的LED串的时分多路复用的电流幅度和持续时间。 该系统的另一方面提供调制开关电流的导通时间，以维持基本上恒定的平均电流电平，并且快速响应并收敛到改变的电流参考电平。
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公开(公告)号：US20090079360A1
公开(公告)日：2009-03-26
申请号：US11927263
申请日：2007-10-29
CPC分类号： H05B33/0872 , G09G3/3413 , G09G3/342 , G09G2320/0242 , G09G2320/041 , G09G2320/064 , G09G2320/0666 , G09G2330/06 , H05B33/0818 , H05B33/086 , H05B33/0866
摘要： Exemplary embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures.
摘要翻译： 本发明的示例性实施例提供了一种控制从固态照明系统发射的光的强度和光谱的系统，装置和方法。 固态照明在全强度和选定温度下具有第一发射光谱，第一电偏压用于固态照明产生第一波长偏移，第二电偏压用于固态照明，产生第二相对波长 转移。 示例性实施例提供用于接收指定所选择的强度水平或选定温度的信息; 以及向所述固态照明提供组合的第一电偏置和第二电偏置以产生具有所选强度水平的发射光，并且在预定温度范围内具有在所述第一发射光谱的预定变化范围内的第二发射光谱。
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公开(公告)号：US20090079355A1
公开(公告)日：2009-03-26
申请号：US11859680
申请日：2007-09-21
申请人： Dongsheng Zhou , Anatoly Shteynberg , Harry Rodriguez , Mark Eason , Lanh Nguyen
发明人： Dongsheng Zhou , Anatoly Shteynberg , Harry Rodriguez , Mark Eason , Lanh Nguyen
CPC分类号： H05B33/0818
摘要： An apparatus, method and system are provided for controlling the solid state lighting, such as LEDs. An exemplary apparatus comprises: a switch for switching electrical current through the LEDs, a current sensor; a first comparator adapted to determine when a switch electrical current has reached a first predetermined threshold; a second comparator adapted to determine when the switch electrical current has reached a predetermined average current level; and a controller. The controller is adapted to turn the switch into an on state and an off state, to determine a first on time period as a duration between either a detection of a second predetermined current threshold or the turning the switch into the on state, and the detection of the predetermined average current level; to determine a second on time period as a duration between the detection of the predetermined average current level and the detection of the first predetermined current threshold; and to determine an on time period of the switch as substantially proportional to a sum of the first on time period and the second on time period. Additional exemplary embodiments utilize a difference between the first and second on time periods to generate an error signal to adjust the on time period of the switch.
摘要翻译： 提供了用于控制诸如LED的固态照明的装置，方法和系统。 示例性装置包括：用于切换通过LED的电流的开关，电流传感器; 第一比较器，适于确定开关电流何时已经达到第一预定阈值; 第二比较器，适于确定开关电流何时已经达到预定的平均电流电平; 和控制器。 控制器适于将开关转到导通状态和断开状态，以将第一接通时间段确定为检测到第二预定电流阈值或将开关转到导通状态之间的持续时间，以及检测 的预定平均电流水平; 确定第二接通时间段作为所述预定平均电流电平的检测与所述第一预定电流阈值的检测之间的持续时间; 并且确定开关的接通时间段基本上与第一接通时间段和第二接通时间段的总和成比例。 另外的示例性实施例利用第一和第二导通时间段之间的差异来产生误差信号以调整开关的接通时间段。
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