公开(公告)号：US09497851B2

公开(公告)日：2016-11-15

申请号：US13290003

申请日：2011-11-04

申请人： John L. Melanson ,  Eric J. King

发明人： John L. Melanson ,  Eric J. King

IPC分类号： H05B37/02 ,  H05K1/02 ,  H05B33/08

CPC分类号： H05K1/0203 ,  H05B33/08 ,  H05B33/0809 ,  H05B33/0812 ,  H05B33/0815 ,  H05B33/0818 ,  H05B33/0824 ,  H05B33/0827 ,  H05B33/0845 ,  H05B33/0851 ,  H05B33/0854 ,  H05B37/02 ,  Y02B20/19 ,  Y02B20/346 ,  Y02B20/347

摘要： A lighting system includes a controller that is configured to provide thermal management for the lighting system by distributing excess energy in the lighting system through multiple power dissipation circuits. In at least one embodiment, the lighting system is a phase cut compatible, dimmable lighting system having one or more light sources selected from a group consisting of at least one light emitting diode and at least one compact fluorescent lamp. In at least one embodiment, the controller is configured to control the plurality of power dissipation circuits in accordance with a thermal management strategy to dissipate the excess energy in the phase cut compatible, dimmable lighting system. The particular thermal management strategy is a matter of design choice. The power distribution circuits include two of more of: a controlled switch path power dissipation circuit, a controlled link path power dissipation circuit, and a controlled flyback path power dissipation circuit.

摘要翻译： 照明系统包括控制器，其被配置为通过多个功率消耗电路在照明系统中分配多余的能量来为照明系统提供热管理。 在至少一个实施例中，照明系统是具有从由至少一个发光二极管和至少一个紧凑型荧光灯组成的组中选择的一个或多个光源的相切兼容的可调光照明系统。 在至少一个实施例中，控制器被配置为根据热管理策略来控制多个功率消耗电路，以耗散相切兼容的可调光照明系统中的多余能量。 特定的热管理策略是设计选择的问题。 功率分配电路包括以下两个中的一个：受控开关路径功耗电路，受控链路路径功耗电路和受控反激路径功耗电路。

公开(公告)号：US09077262B2

公开(公告)日：2015-07-07

申请号：US12933990

申请日：2009-04-28

申请人： John L. Melanson

发明人： John L. Melanson

IPC分类号： H02M5/45 ,  H02M7/5383 ,  H02M1/14 ,  H02M7/48 ,  H02J3/38 ,  H02M5/451 ,  H02M5/458

CPC分类号： H02M7/53832 ,  H02J3/383 ,  H02M1/14 ,  H02M7/4807 ,  Y02E10/563

摘要： A cascaded switching power converter for coupling a photovoltaic (PV) energy source to power mains provides a high-efficiency and a potentially simple control mechanism for AC solar energy conversion systems. The PV energy source charges a capacitive storage element through a DC-DC converter, and an inverter couples energy from the capacitive storage element to the mains supply. The DC-DC converter is controlled so that ripple present on the capacitive storage element due to current drawn by the inverter is not reflected at the input of the DC-DC converter, which is accomplished by varying the conversion ratio of the DC-DC converter with the ripple voltage present across the capacitor. The average voltage of the capacitor can also be increased with increases in the available power output from the PV energy source, so that a corresponding increase in power is transferred to the mains supply.

摘要翻译： 用于将光伏（PV）能量源耦合到电源的级联开关功率转换器为AC太阳能转换系统提供了高效率和潜在的简单的控制机制。 PV能源通过DC-DC转换器为电容性存储元件充电，并且逆变器将能量从电容存储元件耦合到电源。 控制DC-DC转换器，使得由于逆变器引起的电流而在电容性存储元件上产生的纹波不会反映在DC-DC转换器的输入端，这是通过改变DC-DC转换器的转换比 纹波电压存在于电容器两端。 电容器的平均电压也可以随着来自PV能源的可用功率输出的增加而增加，从而相应的功率增加被传送到电源。

公开(公告)号：US20150145427A1

公开(公告)日：2015-05-28

申请号：US14607412

申请日：2015-01-28

申请人： JOHN L. MELANSON ,  WILLIAM DRAPER

发明人： JOHN L. MELANSON ,  WILLIAM DRAPER

IPC分类号： H05B33/08

CPC分类号： H05B33/0851 ,  H05B33/0803 ,  H05B33/0815 ,  H05B33/0821 ,  H05B33/0824 ,  H05B41/28 ,  Y02B20/347

摘要： A light emitting diode (LED) lighting system includes a switching power converter having an input for coupling to an alternating current (AC) power source, an output, and a switch. The LED lighting system also includes an LED lighting subsystem coupled to receive power from the output of the switching power converter. The LED lighting subsystem includes a current source for one or more LEDs, and the current source has a control node and a sense node. The LED lighting system additionally includes a switch state controller coupled to the switching power converter and coupled to the LED lighting subsystem. The switch state controller controls switching of the switch and varies a control current provided to the control node of the current source based on at least a parameter sensed from the sense node.

摘要翻译： 发光二极管（LED）照明系统包括具有用于耦合到交流（AC）电源，输出和开关的输入的开关功率转换器。 LED照明系统还包括耦合以从开关功率转换器的输出接收功率的LED照明子系统。 LED照明子系统包括用于一个或多个LED的电流源，并且电流源具有控制节点和感测节点。 LED照明系统还包括耦合到开关功率转换器并耦合到LED照明子系统的开关状态控制器。 开关状态控制器控制开关的切换，并且至少基于从感测节点感测的参数来改变提供给电流源的控制节点的控制电流。

公开(公告)号：US08948407B2

公开(公告)日：2015-02-03

申请号：US13333484

申请日：2011-12-21

申请人： Jeffrey Alderson ,  Nitin Kwatra ,  Gautham Devendra Kamath ,  Ali Abdollahzadeh Milani ,  John L. Melanson

发明人： Jeffrey Alderson ,  Nitin Kwatra ,  Gautham Devendra Kamath ,  Ali Abdollahzadeh Milani ,  John L. Melanson

IPC分类号： A61F11/06 ,  G10K11/178

CPC分类号： G10K11/178 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/1082 ,  G10K2210/3017 ,  G10K2210/3028 ,  G10K2210/3035 ,  G10K2210/3049 ,  G10K2210/3056 ,  G10K2210/511

摘要： A personal audio device, such as a wireless telephone, includes noise canceling circuit that adaptively generates an anti-noise signal from a reference microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. An error microphone may also be provided proximate the speaker to measure the output of the transducer in order to control the adaptation of the anti-noise signal and to estimate an electro-acoustical path from the noise canceling circuit through the transducer. A processing circuit that performs the adaptive noise canceling (ANC) function also either adjusts the frequency response of the anti-noise signal with respect to the reference microphone signal, and/or by adjusting the response of the adaptive filter independent of the adaptation provided by the reference microphone signal.

摘要翻译： 诸如无线电话的个人音频设备包括噪声消除电路，其自适应地从参考麦克风信号产生抗噪声信号，并将抗噪声信号注入到扬声器或其它换能器输出中以引起环境音频声音的消除。 还可以在扬声器附近提供误差麦克风以测量换能器的输出，以便控制抗噪声信号的适应性并且估计通过换能器的噪声消除电路的电声路径。 执行自适应噪声消除（ANC）功能的处理电路还可以相对于参考麦克风信号调整抗噪声信号的频率响应，和/或通过调节独立于由 参考麦克风信号。

公开(公告)号：US08947016B2

公开(公告)日：2015-02-03

申请号：US13537301

申请日：2012-06-29

申请人： John L. Melanson ,  Eric King

发明人： John L. Melanson ,  Eric King

IPC分类号： H05B37/02 ,  H05B33/08

CPC分类号： H05B33/0815 ,  H05B33/0845 ,  Y02B20/345 ,  Y02B20/347

摘要： A transformer isolated LED lighting circuit supplies current from a secondary-side storage capacitor to one or more LED strings in conformity with one or more dimming values. The dimming values are communicated through the transformer by patterns or codes provided in pulses of a power converter circuit that charges the storage capacitor from the primary side of the transformer, or alternatively by a special modulated signal provided in addition to the switching pulses.

摘要翻译： 变压器隔离的LED照明电路将电流从次级侧存储电容器提供给一个或多个符合一个或多个调光值的LED串。 调光值通过变压器通过在从变压器的初级侧对存储电容器充电的功率转换器电路的脉冲中提供的模式或代码，或者通过除开关脉冲之外提供的特殊调制信号来传送。

公开(公告)号：US08587217B2

公开(公告)日：2013-11-19

申请号：US12675035

申请日：2008-08-23

申请人： John L. Melanson

发明人： John L. Melanson

IPC分类号： G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  H05B37/00 ,  H05B39/00 ,  H05B41/00

CPC分类号： H05B33/083 ,  H05B33/0815 ,  Y02B20/347

摘要： A LED driver and controller system utilizes switches to parallel connect to respective sets of one or more LEDs and a current source to provide efficient control of the LEDs. In at least one embodiment, the LEDs are connected in series. An LED controller of the LED driver and controller system 200 controls conductivity of the switches. In at least one embodiment, the LED controller provides control signals to one or more LED drivers. The LED drivers receive the control signals and, in response to the control signals, control the conductivity of each switch. In at least one embodiment, the conductivity of the each switch is controlled using a duty cycle modulated control signal. In at least one embodiment, the duty cycle modulated control signal is a pulse width modulated control signal. In another embodiment, the duty cycle modulated control signal is a pulse density modulated control signal.

摘要翻译： LED驱动器和控制器系统利用开关并联连接到相应的一组一个或多个LED和电流源，以提供LED的有效控制。 在至少一个实施例中，LED串联连接。 LED驱动器和控制器系统200的LED控制器控制开关的导电性。 在至少一个实施例中，LED控制器向一个或多个LED驱动器提供控制信号。 LED驱动器接收控制信号，响应于控制信号，控制每个开关的电导率。 在至少一个实施例中，使用占空比调制控制信号来控制每个开关的电导率。 在至少一个实施例中，占空比调制控制信号是脉宽调制控制信号。 在另一个实施例中，占空比调制控制信号是脉冲密度调制控制信号。

公开(公告)号：US08581504B2

公开(公告)日：2013-11-12

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：US08576589B2

公开(公告)日：2013-11-05

申请号：US12165556

申请日：2008-06-30

申请人： John L. Melanson ,  Karl Thompson ,  Kartik Nanda ,  Mauro Gaetano

发明人： John L. Melanson ,  Karl Thompson ,  Kartik Nanda ,  Mauro Gaetano

IPC分类号： H02M1/36

CPC分类号： H02J7/0054 ,  H02J2007/0059 ,  H02M3/33592 ,  Y02B40/90 ,  Y02B70/1475

摘要： A power supply system and method includes a switch state controller that is operational to control a switching power converter during certain power loss conditions that cause conventional switch state controllers to have diminished or no functionality. In at least one embodiment, during certain power loss conditions, such as when an auxiliary power supply is in standby mode or when the switching power converter is not operating, a power supply for the switch state controller does not provide sufficient operating power to the switch state controller during certain power loss conditions. In at least one embodiment, during such power loss conditions power is generated for the switch state controller using sense input and/or sense output currents of the switching power converter to allow an integrated circuit (IC) switch state controller to generate a control signal to control a switch of the switching power converter.

摘要翻译： 电源系统和方法包括开关状态控制器，该开关状态控制器在导致常规开关状态控制器已经减小或没有功能的某些功率损耗条件下可操作以控制开关功率转换器。 在至少一个实施例中，在某些功率损耗状态下，例如当辅助电源处于待机模式时或者当开关电源转换器不工作时，开关状态控制器的电源不能向开关提供足够的工作电力 在某些功率损耗条件下状态控制器。 在至少一个实施例中，在这种功率损耗状态期间，使用开关功率转换器的感测输入和/或感测输出电流为开关状态控制器产生功率，以允许集成电路（IC）开关状态控制器产生控制信号 控制开关电源转换器的开关。

公开(公告)号：US08553430B2

公开(公告)日：2013-10-08

申请号：US12340185

申请日：2008-12-19

申请人： John L. Melanson ,  Mauro L. Gaetano

发明人： John L. Melanson ,  Mauro L. Gaetano

IPC分类号： H02M3/335

CPC分类号： H01F38/02 ,  H01F3/10 ,  H01F3/14 ,  H01F38/08 ,  H01F2038/026 ,  H02M1/42 ,  H02M2001/0032 ,  Y02B70/12 ,  Y02B70/16

摘要： A resonant switching power converter having adaptive dead time control provides improved efficiency along with reduced EMI/audible noise and component stresses. A dead time between pulses generated by a switching circuit is adaptively set in conformity with a value of the input voltage to the resonant switching power converter and an indication of a magnitude of the current passing through inductive element of the resonant tank of the converter. The indication of the current magnitude may be the switching frequency of the converter, or a measure of line or load current levels. The dead time can be obtained from a look-up table or computed from the current magnitude and input voltage values.

摘要翻译： 具有自适应死区时间控制的谐振开关功率转换器提供改进的效率以及降低的EMI /可听噪声和分量应力。 由开关电路产生的脉冲之间的死区时间根据与谐振开关功率转换器的输入电压的值自适应地设定，以及通过转换器的谐振槽的电感元件的电流的大小的指示。 电流幅度的指示可能是转换器的开关频率，或线路或负载电流电平的测量。 死区时间可以从查找表中获得，也可以根据当前幅度和输入电压值计算。

公开(公告)号：US08547034B2

公开(公告)日：2013-10-01

申请号：US13298002

申请日：2011-11-16

申请人： John L. Melanson ,  Eric J. King

发明人： John L. Melanson ,  Eric J. King

IPC分类号： H05B37/02

CPC分类号： H05B37/02 ,  H05B33/0815 ,  H05B33/0851 ,  H05B39/048

摘要： In at least one embodiment, an electronic system includes a controller, and the controller provides compatibility between an electronic light source and a trailing edge dimmer. In at least one embodiment, the controller is capable of predicting an estimated occurrence of a trailing edge of a phase cut AC voltage and accelerating a transition of the phase cut AC voltage from the trailing edge to a predetermined voltage threshold. In at least one embodiment, the controller predicts an estimated occurrence of the trailing edge of the phase cut AC voltage on the basis of actual observations from one or more previous cycles of the phase cut AC voltage.