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1. 发明授权

US06693571B2 Modulation of a digital input signal using a digital signal modulator and signal splitting 有权
标题翻译：使用数字信号调制器和信号分离调制数字输入信号
公开(公告)号：US06693571B2
公开(公告)日：2004-02-17
申请号：US10325145
申请日：2002-12-20
申请人： John L. Melanson , Jack B. Andersen , Michael G. Chorn
发明人： John L. Melanson , Jack B. Andersen , Michael G. Chorn
IPC分类号： H03M300
CPC分类号： H02M3/1584 , H02M3/157 , H03F3/2173 , H03F2200/331 , H03K7/08
摘要： A digital signal modulator modulates a digital input signal to drive a load, such as an opposed current amplifier or other opposed current converter. The combinations of frequency relationships and digital signal modulator elements provide significant digital signal processing capabilities and flexible output signal timing. In one embodiment, a digital signal modulator modulates a digital input signal. Even and odd samples of the input signal propagate along two respective channels (signal paths), which include further digital processing capabilities, such as pulse width modulation, to generate output signals appropriate for the topology of a load. Additionally, a bias signal may be modulated with the digital input signal. By utilizing digital signal processing to modulate the input signal, various processing technologies are applied to the input signal. For example, noise shaping may be implemented using a delta-sigma modulator as an input stage to the two channels.
摘要翻译：数字信号调制器调制数字输入信号以驱动负载，例如相对的电流放大器或其它相对的电流转换器。频率关系和数字信号调制器元件的组合提供了显着的数字信号处理能力和灵活的输出信号时序。在一个实施例中，数字信号调制器调制数字输入信号。输入信号的偶数和奇数样本沿着两个相应的通道（信号路径）传播，其包括进一步的数字处理能力，例如脉冲宽度调制，以产生适合负载拓扑的输出信号。另外，可以用数字输入信号调制偏置信号。通过利用数字信号处理来调制输入信号，各种处理技术被应用于输入信号。例如，可以使用Δ-Σ调制器作为两个通道的输入级来实现噪声整形。

2. 发明授权

US06762704B1 Modulation of a digital input signal using multiple digital signal modulators 有权
标题翻译：使用多个数字信号调制器调制数字输入信号
公开(公告)号：US06762704B1
公开(公告)日：2004-07-13
申请号：US10314804
申请日：2002-12-09
申请人： John L. Melanson , Jack B. Andersen
发明人： John L. Melanson , Jack B. Andersen
IPC分类号： H03M300
CPC分类号： H03M3/37 , H03M3/506
摘要： A digital input signal is modulated using multiple digital signal modulators operating at a variety of clock frequencies and clock frequency phase relationships to drive a load, such as an opposed current amplifier or other opposed current converter. The combinations of frequency relationships and digital signal modulator elements provide significant digital signal processing capabilities and flexible output signal timing. In one embodiment, a digital input signal, which may be biased, is modulated by multiple digital signal modulators to generate corresponding output signals. The corresponding output signals are utilized to drive a load, such as a half bridge, opposed current amplifier and to produce a single output signal. By adjusting the phase relationships between the clock frequencies, various output signal characteristics are achieved. Additionally, by utilizing digital signal processing to modulate the input signal, various processing technologies are applied to the input signal. For example, noise shaping may be implemented using delta-sigma modulators as one stage in digital signal modulators.
摘要翻译：使用在各种时钟频率和时钟频率相位关系下操作的多个数字信号调制器来调制数字输入信号，以驱动诸如相对的电流放大器或其它相对的电流转换器之类的负载。频率关系和数字信号调制器元件的组合提供了显着的数字信号处理能力和灵活的输出信号时序。在一个实施例中，可以被偏置的数字输入信号由多个数字信号调制器调制以产生相应的输出信号。相应的输出信号用于驱动负载，例如半桥，相对电流放大器，并产生单个输出信号。通过调整时钟频率之间的相位关系，实现各种输出信号特性。此外，通过利用数字信号处理来调制输入信号，各种处理技术被应用于输入信号。例如，可以使用delta-sigma调制器作为数字信号调制器中的一个阶段来实现噪声整形。

3. 发明授权

US10263532B2 Multiple power sources for a switching power converter controller 有权
公开(公告)号：US10263532B2
公开(公告)日：2019-04-16
申请号：US13077421
申请日：2011-03-31
申请人： John L. Melanson , Eric J. King
发明人： John L. Melanson , Eric J. King
IPC分类号： H02M3/22 , H02M7/06 , H02M1/36 , H05B33/08 , H02M3/335 , H02M1/00
摘要： An electronic system includes two power supplies to supply an operating voltage to a switching power converter. The first power supply, referred to as a start-up power supply, includes a first source follower transistor to conduct a start-up current for a controller and supply an operating voltage for the controller. The controller controls operation of the switching power converter. A second power supply, referred to as an auxiliary power supply, includes a second source follower transistor to conduct a steady-state operational current for the controller and supply an operating voltage for the controller. In at least one embodiment, once the second power supply begins supplying the operating voltage to the controller, the start-up power supply automatically ceases supplying the start-up current to the controller.

4. 发明授权

US09307601B2 Input voltage sensing for a switching power converter and a triac-based dimmer 有权
标题翻译：开关电源转换器和基于triac的调光器的输入电压检测
公开(公告)号：US09307601B2
公开(公告)日：2016-04-05
申请号：US13539004
申请日：2012-06-29
申请人： Zhaohui He , Rahul Singh , Eric J. King , John L. Melanson , William A. Draper
发明人： Zhaohui He , Rahul Singh , Eric J. King , John L. Melanson , William A. Draper
IPC分类号： H05B37/00 , H05B33/08
CPC分类号： H05B33/0848 , H05B33/0815 , Y02B20/346
摘要： An electronic lighting system and method described herein control energy provided to an electronic lighting device, such as one or more light-emitting diodes (LEDs) and/or compact fluorescent lamps (CFLs), of the electronic lighting system. A triac-based dimmer phase cuts a line voltage provided to the electronic lighting system. A controller of the electronic lighting system utilizes a probing system to overcome idiosyncrasies of the triac-based dimmer to allow the controller to probe and sense the line voltage. To reduce energy consumption, rather than probing each cycle of the output voltage of the triac-based dimmer, the controller periodically or intermittently probes the output voltage of the triac-based dimmer.
摘要翻译：本文所述的电子照明系统和方法控制提供给诸如电子照明系统的一个或多个发光二极管（LED）和/或紧凑型荧光灯（CFL）的电子照明装置的能量。三端双向可控硅开关控制器的调光器相位切断提供给电子照明系统的线路电压。电子照明系统的控制器利用探测系统来克服基于triac的调光器的特性，以允许控制器探测和感测线路电压。为了降低能耗，而不是探测基于三端双向可控硅的调光器的输出电压的每个周期，控制器周期性或间歇地探测基于三端双向可控硅的调光器的输出电压。

5. 发明申请

US20150327339A1 LED (LIGHT-EMITTING DIODE) STRING DERIVED CONTROLLER POWER SUPPLY 有权
公开(公告)号：US20150327339A1
公开(公告)日：2015-11-12
申请号：US14801440
申请日：2015-07-16
申请人： John L. Melanson , Eric King , Rahul Singh
发明人： John L. Melanson , Eric King , Rahul Singh
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0824 , H05B33/0827 , H05B33/083 , H05B33/0845 , H05B37/02 , H05B39/047 , H05B41/28 , H05B41/2827 , Y02B20/345 , Y02B20/346 , Y02B20/347
摘要： An LED lighting device includes an auxiliary power supply that supplies power to a control circuit of the LED lighting device that receives an input from a terminal of a light-emitting diode (LED) string of the lighting device that has a substantially lower voltage than the line voltage to which the lighting device is connected. The terminal may be within the LED string, or may be an end of the string. A linear regulator may be operated from the voltage drop across a number of the LEDs in the string so that the energy wasted by the auxiliary power supply is minimized. In other designs, the auxiliary power supply may be intermittently connected in series with the LED string only when needed. The intermittent connection can be used to forward bias a portion of the LED string when the voltage supplied to the LED string is low, increasing overall brightness.

6. 发明授权

US09119262B2 Boost and linear LED control 有权
公开(公告)号：US09119262B2
公开(公告)日：2015-08-25
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 , H05B41/28
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.

7. 发明授权

US08749173B1 Dimmer compatibility with reactive loads 有权
标题翻译：调光器与无功负载的兼容性
公开(公告)号：US08749173B1
公开(公告)日：2014-06-10
申请号：US13194699
申请日：2011-07-29
申请人： John L. Melanson , Eric J. King , Robert T. Grisamore , Firas S. Azrai
发明人： John L. Melanson , Eric J. King , Robert T. Grisamore , Firas S. Azrai
IPC分类号： H05B41/36 , G05F1/00
CPC分类号： H02M7/06 , H02M1/36 , H02M3/33507 , H02M2001/0006 , H05B33/0815 , Y02B20/346 , Y10T307/352 , Y10T307/50
摘要： A system and method includes a controller that alternately enables at least two different current paths for a current flowing through a dimmer when the dimmer is in an OFF mode. In at least one embodiment, enabling and disabling the current paths allows a power supply of the dimmer to continue functioning and provides the controller sufficient voltage to continue functioning. One of the current paths is a low impedance path and another current path is a path to a voltage supply node of a switching power converter controller. In at least one embodiment, the controller generates an impedance control signal to enable a low impedance current path for a current in the dimmer and alternately provide a current path to the voltage supply node for the controller.
摘要翻译：一种系统和方法包括控制器，当调光器处于关闭模式时，控制器交替地使流过调光器的电流至少两个不同的电流路径。在至少一个实施例中，启用和禁用当前路径允许调光器的电源继续工作，并为控制器提供足够的电压以继续工作。电流路径中的一个是低阻抗路径，另一个电流路径是到开关功率转换器控制器的电压供应节点的路径。在至少一个实施例中，控制器产生阻抗控制信号，以使能用于调光器中的电流的低阻抗电流路径，并交替地向控制器的电压供应节点提供电流路径。

8. 发明授权

US08729811B2 Dimming multiple lighting devices by alternating energy transfer from a magnetic storage element 有权
标题翻译：通过从磁存储元件交替传递能量来调光多个照明装置
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。

9. 发明授权

US08593075B1 Constant current controller with selectable gain 有权
标题翻译：具有可选增益的恒流控制器
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。

10. 发明授权

US08536854B2 Supply invariant bandgap reference system 有权
标题翻译：提供不变带隙参考系
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。

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