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1.发明授权Inductor over-current protection using a volt-second value representing an input voltage to a switching power converter 有权使用表示开关电源转换器的输入电压的伏特值的电感器过电流保护公开(公告)号：US09178415B1
公开(公告)日：2015-11-03
申请号：US12751949
申请日：2010-03-31
申请人： Michael A. Kost , John L. Melanson , Rahul Singh , Mohit Sood , Zhaohui He
发明人： Michael A. Kost , John L. Melanson , Rahul Singh , Mohit Sood , Zhaohui He
摘要： A power control system includes a switching power converter and a controller. The controller is configured to detect an over-current condition of an inductor current in the switching power converter using at least one non-inductor-current signal. In at least one embodiment, the switching power converter does not have a resistor or resistor network to sense the inductor current. In at least one embodiment, the controller indirectly determines a state of the inductor current using at least one non-inductor-current signal. Potentially damaging inductor current values that are, for example, greater than a normal maximum value or at a value that causes a discontinuous conduction mode system to operate in continuous conduction mode represent exemplary inductor over-current conditions addressed by one embodiment of the power control system.
摘要翻译： 电力控制系统包括开关电力转换器和控制器。 控制器被配置为使用至少一个非电感器电流信号来检测开关功率转换器中的电感器电流的过电流状态。 在至少一个实施例中，开关功率转换器不具有用于感测电感器电流的电阻器或电阻器网络。 在至少一个实施例中，控制器使用至少一个非电感器电流信号间接地确定电感器电流的状态。 例如，大于正常最大值或导致不连续导通模式系统在连续导通模式下工作的值的电位器电流值可能会受到损害，表示电力系统的一个实施例所解决的示例性电感器过电流状况 。
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2.发明授权Input voltage sensing for a switching power converter and a triac-based dimmer 有权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
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。
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3.发明申请Input Voltage Sensing For A Switching Power Converter And A Triac-Based Dimmer 有权开关电源转换器和三端双向可控硅调光器的输入电压检测公开(公告)号：US20130002163A1
公开(公告)日：2013-01-03
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
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 (CELs), 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电子照明装置的能量，例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（CEL）。 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。
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4.发明授权Method and apparatus for reducing switching noise in a system-on-chip (SoC) integrated circuit including an analog-to-digital converter (ADC) 有权包括模数转换器（ADC）在片上系统（SoC）集成电路中降低开关噪声的方法和装置，公开(公告)号：US07515076B1
公开(公告)日：2009-04-07
申请号：US11864876
申请日：2007-09-28
申请人： Rahul Singh , Prashanth Drakshapalli , Jie Fang , Edwin De Angel , Mohit Sood
发明人： Rahul Singh , Prashanth Drakshapalli , Jie Fang , Edwin De Angel , Mohit Sood
IPC分类号： H03M1/00
摘要： A method and apparatus for reducing switching noise in a system-on-chip (SoC) integrated circuit including an analog to digital converter (ADC) provides for reduced noise in the ADC conversions. Sampling circuits of the ADC are operated by sampling clock signals and digital circuits and other noise-generating circuits such as power converters, are operated by digital circuit clock signals. Both sets of clock signals are derived from the same master clock by a clock generator circuit, but an offset is applied in the clock generator circuit to move the edges of the digital circuit clock signals away from critical sampling intervals corresponding to edges of the sampling clocks. In one embodiment, the offset is applied by a processor core that forms part of the digital circuits by setting a value in the clock generator, which the clock generator then loads into the divider after halting the clock to the digital circuits.
摘要翻译： 包括模数转换器（ADC）在内的片上系统（SoC）集成电路中降低开关噪声的方法和装置提供了ADC转换中降低的噪声。 ADC的采样电路通过采样时钟信号进行操作，数字电路和其他噪声发生电路（如电源转换器）由数字电路时钟信号进行操作。 这两组时钟信号由时钟发生器电路从相同的主时钟导出，但是在时钟发生器电路中施加偏移以使数字电路时钟信号的边缘远离对应于采样时钟的边缘的关键采样间隔 。 在一个实施例中，通过设置时钟发生器中的值来构成数字电路的一部分的处理器内核施加偏移，时钟发生器在暂停数字电路的时钟之后将其加载到分频器中。
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公开(公告)号：US07339628B2
公开(公告)日：2008-03-04
申请号：US10964547
申请日：2004-10-13
申请人： Daniel Gudmondson , John L. Melanson , Rahul Singh , James A. Antone , Ahsan Habib Chowdhury , Krishnan Subramoniam
发明人： Daniel Gudmondson , John L. Melanson , Rahul Singh , James A. Antone , Ahsan Habib Chowdhury , Krishnan Subramoniam
IPC分类号： H03M1/12
CPC分类号： H04N5/4401 , H04N5/602 , H04N5/76 , H04N5/781 , H04N9/8042 , H04N11/20 , H04N21/4147 , H04N21/4305
摘要： Video decoder systems in which both the analog-to-digital converter and the composite decoder are driven by the stable sample clock, such as a crystal source. The outputs of the composite decoder are provided to a source rate converter, having an output that is provided to a digital output formatter. The digital output formatter is driven by the output clock, which may be locked to the source clock if desired. The output clock is developed by a clock generator which may be one of several different types, including a fractional N synthesizer, a direct digital synthesizer or a puncture clock.
摘要翻译： 视频解码器系统，其中模数转换器和复合解码器均由诸如晶体源的稳定采样时钟驱动。 复合解码器的输出被提供给源速率转换器，其具有提供给数字输出格式器的输出。 数字输出格式化器由输出时钟驱动，如果需要，可以将其锁定到源时钟。 输出时钟由时钟发生器开发，时钟发生器可以是几种不同类型之一，包括分数N合成器，直接数字合成器或穿孔时钟。
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6.发明授权Integrated circuit switching power supply controller with selectable buck mode operation 有权集成电路开关电源控制器，可选择降压模式运行公开(公告)号：US08912781B2
公开(公告)日：2014-12-16
申请号：US12973003
申请日：2010-12-20
申请人： Rahul Singh , John L. Melanson
发明人： Rahul Singh , John L. Melanson
CPC分类号： H02M3/33507 , H02M3/156 , H05B33/0815 , H05B33/0851 , Y02B20/347
摘要： An integrated circuit (IC) controller for a switching power supply has a selectable operating mode for supporting multiple switching power supply topologies. The IC controls current by controlling a cycle rate of the switching power supply to provide a constant or variable output current, which may be provided to lighting devices such as light-emitting diodes (LEDs). The selectable operating mode includes at least a buck converter operating mode and another operating mode, which may be a flyback converter operating mode.
摘要翻译： 用于开关电源的集成电路（IC）控制器具有用于支持多个开关电源拓扑的可选操作模式。 IC通过控制开关电源的周期速率来控制电流，以提供恒定或可变的输出电流，其可以被提供给诸如发光二极管（LED）的照明装置。 可选择的操作模式至少包括降压转换器操作模式和另一操作模式，其可以是反激转换器操作模式。
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公开(公告)号：US07355652B2
公开(公告)日：2008-04-08
申请号：US10964556
申请日：2004-10-13
IPC分类号： H03L7/00
CPC分类号： H03L7/06 , H03L7/0991 , H03L2207/50 , H04L7/005 , H04L7/0331 , H04N5/126
摘要： A video decoder in which the video source clock is generated entirely in the digital domain is disclosed herein. By creating a virtual version of the source clock in a numeric oscillator, the amount of noise in the system is substantially reduced. Furthermore, by transferring the digitized video signal, sampled with an asynchronous crystal clock, into the source clock domain, the accuracy of the brightness (amplitude) and color (phase) information can be greatly enhanced.
摘要翻译： 本文公开了视频源时钟完全在数字域中生成的视频解码器。 通过在数字振荡器中创建源时钟的虚拟版本，系统中的噪声量显着降低。 此外，通过将用异步晶体时钟采样的数字化视频信号传送到源时钟域，可以大大提高亮度（幅度）和颜色（相位）信息的精度。
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8.发明申请INTEGRATED CIRCUIT SWITCHING POWER SUPPLY CONTROLLER WITH SELECTABLE BUCK MODE OPERATION 有权集成电路切换电源控制器，具有可选择的BUCK模式操作公开(公告)号：US20120025736A1
公开(公告)日：2012-02-02
申请号：US12973003
申请日：2010-12-20
申请人： Rahul Singh , John L. Melanson
发明人： Rahul Singh , John L. Melanson
IPC分类号： H05B41/36
CPC分类号： H02M3/33507 , H02M3/156 , H05B33/0815 , H05B33/0851 , Y02B20/347
摘要： An integrated circuit (IC) controller for a switching power supply has a selectable operating mode for supporting multiple switching power supply topologies. The IC controls current by controlling a cycle rate of the switching power supply to provide a constant or variable output current, which may be provided to lighting devices such as light-emitting diodes (LEDs). The selectable operating mode includes at least a buck converter operating mode and another operating mode, which may be a flyback converter operating mode.
摘要翻译： 用于开关电源的集成电路（IC）控制器具有用于支持多个开关电源拓扑的可选操作模式。 IC通过控制开关电源的周期速率来控制电流，以提供恒定或可变的输出电流，其可以被提供给诸如发光二极管（LED）的照明装置。 可选择的操作模式至少包括降压转换器操作模式和另一操作模式，其可以是反激转换器操作模式。
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9.发明授权Video quality adaptive variable-rate buffering method and system for stabilizing a sampled video signal 有权用于稳定采样视频信号的视频质量自适应可变速率缓冲方法和系统公开(公告)号：US07471340B1
公开(公告)日：2008-12-30
申请号：US11088447
申请日：2005-03-24
CPC分类号： H03L7/1974 , H03L7/08 , H03L7/0805 , H03L2207/50 , H04N5/12 , H04N5/213 , H04N5/765 , H04N5/85 , H04N7/0132 , H04N9/8042 , H04N9/896 , H04N21/4325 , H04N21/44004
摘要： A video quality adaptive variable-rate buffering method and system for stabilizing a sampled video signal reduces the buffer size required to compensate for line-to-line variations in an unstable video source. A video signal is sampled at a predetermined rate and decimated by a selectable decimation factor prior to buffering. By selecting different decimation factors, the effective length of the buffer is changed from short duration for stable input signals and to longer duration for unstable input signals. A video signal quality detector is employed to provide a selection input that adjusts the decimation factor and also the loop bandwidth of a clock generator that provides the output clock for the buffer, which is generated from the input signal via a phase-lock loop (PLL). The operation of the system automatically varies from highly responsive for stable video input signals to less responsive for unstable video input signals, providing improved stability in the video output.
摘要翻译： 用于稳定采样视频信号的视频质量自适应可变速率缓冲方法和系统降低了补偿不稳定视频源中的线间变化所需的缓冲器大小。 以预定的速率对视频信号进行采样，并在缓冲之前用可选择的抽取因子进行抽取。 通过选择不同的抽取因子，缓冲器的有效长度从稳定输入信号的短持续时间改变为不稳定输入信号的持续时间。 采用视频信号质量检测器来提供选择输入，其调节抽取因子以及时钟发生器的环路带宽，该时钟发生器提供缓冲器的输出时钟，该时钟发生器通过锁相环（PLL）从输入信号产生 ）。 系统的操作自动变化，从稳定的视频输入信号的高度响应到对不稳定的视频输入信号的响应不足，提高了视频输出的稳定性。
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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.
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