公开(公告)号：US08729811B2

公开(公告)日：2014-05-20

申请号：US12894440

申请日：2010-09-30

申请人： John L. Melanson

发明人： John L. Melanson

IPC分类号： H05B37/02 ,  H05B37/00

CPC分类号： H02M7/06 ,  H02M1/36 ,  H02M3/33507 ,  H02M2001/0006 ,  H05B33/0815 ,  Y02B20/346 ,  Y10T307/352 ,  Y10T307/50

摘要： A single magnetic storage element is used to provide power to multiple lighting devices, which may be strings of light-emitting diodes (LEDs) of different color. A switching circuit controls alternating application of energy among the multiple lighting devices and another switching circuit may charge the primary winding to different energy levels to control the intensity of the multiple lighting devices. In particular, the multiple lighting devices may be controlled to provide a desired color profile while dimming the lighting devices, while requiring only a single magnetic storage element for supplying energy to the lighting devices.

摘要翻译： 单个磁存储元件用于为多个照明装置提供电力，这些装置可以是不同颜色的发光二极管（LED）串。 开关电路控制多个照明装置之间的能量的交替施加，另一个开关电路可以将初级绕组充电到不同的能级以控制多个照明装置的强度。 特别地，可以控制多个照明装置以在使照明装置调光的同时提供期望的颜色特征，同时仅需要单个磁存储元件来向照明装置提供能量。

公开(公告)号：US08593075B1

公开(公告)日：2013-11-26

申请号：US13174404

申请日：2011-06-30

申请人： John L. Melanson ,  Rahul Singh ,  Siddharth Maru

发明人： John L. Melanson ,  Rahul Singh ,  Siddharth Maru

IPC分类号： H05B37/00

CPC分类号： H05B33/0815 ,  Y02B20/347

摘要： A power distribution system includes a selectable gain value to generate a duty cycle modulated control signal to control current supplied to a load. In at least one embodiment, the power distribution system includes a controller and a switch, and the controller generates the duty cycle modulated control signal to control conductivity of the switch. The duty cycle modulated control signal has a period and a pulse width. In at least one embodiment, the controller determines the period of the control signal as a function of a peak allowable link current value (also referred to as a peak allowable output current value) of a switching power converter, an inductor flyback time of the switching power converter, and the gain value. The link current provides current to a load, such as a lighting system that includes light emitting diodes.

摘要翻译： 配电系统包括可选择的增益值，以产生占空比调制控制信号以控制提供给负载的电流。 在至少一个实施例中，配电系统包括控制器和开关，并且控制器产生占空比调制控制信号以控制开关的电导率。 占空比调制控制信号具有周期和脉冲宽度。 在至少一个实施例中，控制器将控制信号的周期确定为开关功率转换器的峰值允许链路电流值（也称为峰值可允许输出电流值）的函数，开关的电感器反激时间 功率转换器和增益值。 链路电流向负载提供电流，例如包括发光二极管的照明系统。

公开(公告)号：US08536854B2

公开(公告)日：2013-09-17

申请号：US12894472

申请日：2010-09-30

申请人： John L. Melanson ,  Prashanth Drakshapalli ,  Larry L. Harris

发明人： John L. Melanson ,  Prashanth Drakshapalli ,  Larry L. Harris

IPC分类号： G05F3/28

CPC分类号： G05F3/30

摘要： An electronic reference-signal generation system includes a supply invariant bandgap reference system that generates one or more bandgap reference signals that are substantially unaffected by bulk error currents. In at least one embodiment, the bandgap reference generates a substantially invariant bandgap reference signals for a range of direct current (DC) supply voltages. Additionally, in at least one embodiment, the bandgap reference system provides substantially invariant bandgap reference signals when the supply voltage varies due to alternating current (AC) voltages. In at least one embodiment, the bandgap reference system generates a bandgap reference voltage VBG, a “proportional to absolute temperature” (PTAT) current (“iPTAT”) and a “zero dependency on absolute temperature” (ZTAT) current (“iZTAT”) that are substantially unaffected by variations in the supply voltage and unaffected by a bulk error current.

摘要翻译： 电子参考信号生成系统包括供应不变带隙基准系统，其产生基本上不受体积误差电流影响的一个或多个带隙参考信号。 在至少一个实施例中，带隙参考产生用于一系列直流（DC）电源电压的基本上不变的带隙基准信号。 另外，在至少一个实施例中，当电源电压由于交流（AC）电压而变化时，带隙基准系统提供基本上不变的带隙基准信号。 在至少一个实施例中，带隙参考系统产生带隙参考电压VBG，“与绝对温度成比例”（PTAT）电流（“iPTAT”）和“对绝对温度的零依赖”（ZTAT）电流（“iZTAT” ），其基本上不受电源电压的变化影响并且不受体错误电流的影响。

公开(公告)号：US08536794B2

公开(公告)日：2013-09-17

申请号：US12474714

申请日：2009-05-29

申请人： John L. Melanson ,  John J. Paulos

发明人： John L. Melanson ,  John J. Paulos

IPC分类号： H05B37/02

CPC分类号： H05B37/0209 ,  H05B33/0809 ,  H05B33/0848 ,  H05B37/02

摘要： A system and method map dimming levels of a lighting dimmer to light source control signals using a predetermined lighting output function. The dimmer generates a dimmer output signal value. At any particular period of time, the dimmer output signal value represents one of multiple dimming levels. In at least one embodiment, the lighting output function maps the dimmer output signal value to a dimming value different than the dimming level represented by the dimmer output signal value. The lighting output function converts a dimmer output signal values corresponding to measured light levels to perception based light levels. A light source driver operates a light source in accordance with the predetermined lighting output function. The system and method can include a filter to modify at least a set of the dimmer output signal values prior to mapping the dimmer output signal values to a new dimming level.

公开(公告)号：US08487591B1

公开(公告)日：2013-07-16

申请号：US12650547

申请日：2009-12-31

申请人： William A. Draper ,  John L. Melanson ,  Zhaohui He

发明人： William A. Draper ,  John L. Melanson ,  Zhaohui He

IPC分类号： H02J7/00

CPC分类号： H02J1/10 ,  H02J7/345 ,  H02J9/00 ,  H02J9/04 ,  H02J2001/006

摘要： A power control system provides immunity from power supply dropout for a controller without compromising a startup time of the controller. In at least one embodiment, the power control system includes separate startup and dropout immunity capacitors. In at least one embodiment, selection of the capacitance of the startup capacitor is independent of selection of the capacitance of the dropout immunity capacitance. In at least one embodiment, the startup capacitance can be minimized to provide sufficient energy for the controller to normally operate during one missed cycle of an input voltage and, thus, provide a minimum startup time for the controller. The capacitance of the dropout immunity capacitor can be maximized to provide sufficient energy for the controller to operate normally during a time period longer than one cycle of the input voltage.

摘要翻译： 电源控制系统在不损害控制器的启动时间的情况下提供对控制器的电源供电缺陷的抗扰度。 在至少一个实施例中，功率控制系统包括单独的启动和掉电抗扰电容器。 在至少一个实施例中，启动电容器的电容的选择与压降抗扰电容的电容的选择无关。 在至少一个实施例中，可以使启动电容最小化以提供足够的能量，以使控制器在输入电压的一个错过周期期间正常工作，并因此为控制器提供最小启动时间。 可以使压差抗扰电容器的电容最大化，以提供足够的能量，使控制器在长于输入电压的一个周期的时间周期内正常工作。

公开(公告)号：US08482220B2

公开(公告)日：2013-07-09

申请号：US13431569

申请日：2012-03-27

申请人： John L. Melanson

发明人： John L. Melanson

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H03K17/18 ,  H03K17/567 ,  H03K17/687 ,  H03K17/6872 ,  H03K17/74 ,  H05B33/0809 ,  H05B33/0818 ,  H05B33/0845 ,  H05B33/0848 ,  H05B33/0851 ,  H05B33/0887 ,  Y02B20/346 ,  Y02B20/347 ,  Y10S315/04 ,  Y10S323/905

摘要： A light emitting diode (LED) lighting system includes a power factor correction (PFC) controller that determines at least one power factor correction control parameter from phase delays of a phase modulated signal. In at least one embodiment, a peak voltage of the phase modulated signal is a PFC control parameter used by the PFC controller to control power factor correction and generation of a link voltage by a PFC LED driver circuit. The phase delays are related to a peak voltage of the phase modulated signal. Thus, in at least one embodiment, detecting the phase delay in one or more cycles of the phase modulated signal allows the PFC controller to determine the peak voltage of the phase modulated signal.

摘要翻译： 发光二极管（LED）照明系统包括功率因数校正（PFC）控制器，其从相位调制信号的相位延迟确定至少一个功率因数校正控制参数。 在至少一个实施例中，相位调制信号的峰值电压是由PFC控制器使用的PFC控制参数，以通过PFC LED驱动器电路来控制功率因数校正和产生链路电压。 相位延迟与相位调制信号的峰值电压有关。 因此，在至少一个实施例中，在相位调制信号的一个或多个周期中检测相位延迟允许PFC控制器确定相位调制信号的峰值电压。

公开(公告)号：US08362707B2

公开(公告)日：2013-01-29

申请号：US12495206

申请日：2009-06-30

申请人： William A. Draper ,  John L. Melanson

发明人： William A. Draper ,  John L. Melanson

IPC分类号： H05B33/08 ,  H05B37/02

CPC分类号： H05B33/0869 ,  H05B33/0872

摘要： A lighting system includes time division light output sensing and adjustment for ambient light. In at least one embodiment, time division light output sensing involves modulating power to a light emitting diode (LED) set, and the set of LEDs includes one or more LEDs. In at least one embodiment, each LED in the LED set is included in a single lamp, and, in at least one embodiment, the set of LEDs is contained in multiple lamps. In at least one embodiment, for each lamp, a controller modulates power to the LED set by selectively reducing power to the LED set using time division algorithm to allow a light sensor to sense the brightness of ambient light with a reduced contribution from the LED set. In at least one embodiment, a lighting system also includes time division light output sensing and adjustment for different spectra LEDs.

摘要翻译： 照明系统包括对于环境光的时分光输出感测和调整。 在至少一个实施例中，时分光输出感测涉及调制发光二极管（LED）组的功率，并且该组LED包括一个或多个LED。 在至少一个实施例中，LED组中的每个LED包括在单个灯中，并且在至少一个实施例中，该组LED包含在多个灯中。 在至少一个实施例中，对于每个灯，控制器通过使用时分算法选择性地降低对LED组的功率来调制LED组的功率，以允许光传感器以来自LED组的减少的贡献来感测环境光的亮度 。 在至少一个实施例中，照明系统还包括用于不同光谱LED的时分光输出感测和调整。

公开(公告)号：US20120299501A1

公开(公告)日：2012-11-29

申请号：US13488580

申请日：2012-06-05

申请人： Michael A. Kost ,  Mauro L. Gaetano ,  John L. Melanson

发明人： Michael A. Kost ,  Mauro L. Gaetano ,  John L. Melanson

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0824 ,  Y02B20/346

摘要： In at least one embodiment, a controller allows triac-based dimmer to properly function and dim a load whose voltage is regulated by a switching power converter. In at least one embodiment, the switching power converter includes a switch to control voltage conversion of an input voltage to the switching power converter, wherein phase delays are introduced in the input voltage by a triac-based dimmer during a dimming period. In at least one embodiment, the controller is configured to control the switch of the switching power converter to establish an input resistance of the switching power converter during a dimming portion of the input voltage, wherein the input resistance allows the triac-based dimmer to phase modulate a supply voltage to the dimmer so that an output voltage of the dimmer has a substantially uninterrupted phase delay during each half-cycle of the supply voltage during the dimming period.

摘要翻译： 在至少一个实施例中，控制器允许基于triac的调光器正确地对其电压由开关功率转换器调节的负载进行功能和调光。 在至少一个实施例中，开关功率转换器包括用于控制输入电压到开关功率转换器的电压转换的开关，其中在调光期间通过基于三端双向可控硅的调光器在输入电压中引入相位延迟。 在至少一个实施例中，控制器被配置为控制开关功率转换器的开关，以在输入电压的调光部分期间建立开关功率转换器的输入电阻，其中输入电阻允许基于triac的调光器相位 调制到调光器的电源电压，使得调光器的输出电压在调光期间的电源电压的每个半周期期间具有基本上不间断的相位延迟。

公开(公告)号：US08311243B2

公开(公告)日：2012-11-13

申请号：US11610496

申请日：2006-12-13

申请人： John Christopher Tucker ,  Daniel John Allen ,  John L. Melanson ,  Ammisetti Prasad

发明人： John Christopher Tucker ,  Daniel John Allen ,  John L. Melanson ,  Ammisetti Prasad

IPC分类号： H03F99/00

CPC分类号： H03G3/004 ,  H02M3/07 ,  H03F1/0227 ,  H03F1/025 ,  H03F3/183 ,  H03F2200/03 ,  H03F2200/211 ,  H03F2200/507 ,  H03G3/20 ,  H03G3/3031

摘要： An energy-efficient consumer device audio power output stage provides improved battery life and reduced power dissipation. A power supply having a selectable operating mode supplies the power supply rails to the power amplified output stage. The operating mode is controlled in conformity with the audio signal level, which may be determined from a volume control setting of the device and/or from a signal level detector that determines the amplitude of the signal being amplified. The power supply may be a charge pump in which the operating mode uses a capacitive divider to provide for selection of a power supply output voltage that is a rational fraction of the power supply output voltage in a full-voltage operating mode.

摘要翻译： 节能消费者设备音频功率输出级提供更好的电池寿命和更低的功耗。 具有可选操作模式的电源将电源轨提供给功率放大输出级。 操作模式根据音频信号电平进行控制，音频信号电平可以根据设备的音量控制设置和/或从确定被放大的信号的幅度的信号电平检测器确定。 电源可以是电荷泵，其中操作模式使用电容分压器来提供在全电压工作模式下选择作为电源输出电压的有效部分的电源输出电压。

公开(公告)号：US20120229046A1

公开(公告)日：2012-09-13

申请号：US13473839

申请日：2012-05-17

申请人： John L. Melanson

发明人： John L. Melanson

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0818 ,  Y02B20/347 ,  Y10S315/04

摘要： A light emitting diode (LED) lighting system includes a PFC and output voltage controller and a LED lighting power system. The controller advantageously operates from an auxiliary voltage less than a link voltage generated by the LED lighting power system. The common reference voltage allows all the components of lighting system to work together. A power factor correction switch and an LED drive current switch are coupled to the common reference node and have control node-to-common node, absolute voltage that allows the controller to control the conductivity of the switches. The LED lighting system can utilize feed forward control to concurrently modify power demand by the LED lighting power system and power demand of one or more LEDs. The LED lighting system can utilize a common current sense device to provide a common feedback signal to the controller representing current in at least two of the LEDs.

摘要翻译： 发光二极管（LED）照明系统包括PFC和输出电压控制器以及LED照明电源系统。 控制器有利地从小于由LED照明电力系统产生的链路电压的辅助电压进行操作。 公共参考电压允许照明系统的所有组件一起工作。 功率因数校正开关和LED驱动电流开关耦合到公共参考节点并具有控制节点到公共节点，允许控制器控制开关的电导率的绝对电压。 LED照明系统可以利用前馈控制来同时修改LED照明电源系统的功率需求和一个或多个LED的功率需求。 LED照明系统可以利用公共电流检测装置向控制器提供公共反馈信号，该控制器表示至少两个LED中的电流。