公开(公告)号：US06738004B2

公开(公告)日：2004-05-18

申请号：US10219362

申请日：2002-08-15

申请人： John L. Melanson

发明人： John L. Melanson

IPC分类号： H03M300

CPC分类号： H03M3/338 ,  H03M1/0668 ,  H03M3/424 ,  H03M3/458 ,  H03M3/50 ,  H03M7/3026

摘要： A method and system for integrating a mismatch noise shaper into the main loop of a delta-sigma modulator are disclosed. The mismatch noise shaper output is fed back to the summer and is responsive to the mismatch noise shaper. At appropriate times, the mismatch noise shaper selectively overrides the quantizer so that the mismatch noise shaper changes output values of the mismatch noise shaper from values representative of a corresponding output value of the quantizer to other values representative of a different output value of the quantizer. The overriding feature distinguishes the present Invention from a DEM, as the output of a DEM is only a reordering of the same number of elements as its input. The mismatch noise shaper selectively overrides the quantizer when the quantizer output has prevented the mismatch noise shaper from controlling selection of elements at the mismatch noise shaper output for a predetermined time period.

摘要翻译： 公开了一种用于将失配噪声整形器整合到Δ-Σ调制器的主回路中的方法和系统。 不匹配的噪声整形器输出被反馈到夏天，并且响应于不匹配的噪声整形器。 在适当的时候，不匹配噪声整形器选择性地覆盖量化器，使得不匹配噪声整形器将不匹配噪声整形器的输出值从表示量化器的相应输出值的值转换成代表量化器的不同输出值的其它值。 重要的特征将本发明与DEM区分开，因为DEM的输出仅仅是与其输入相同数量的元素的重新排序。 当量化器输出阻止不匹配噪声整形器在预定时间段内控制在不匹配噪声整形器输出处的元件的选择时，不匹配噪声整形器选择性地覆盖量化器。

公开(公告)号：US09497850B2

公开(公告)日：2016-11-15

申请号：US13289931

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 ,  H05B39/02 ,  H05B39/04 ,  H05B41/36 ,  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： In at least one embodiment, a lighting system includes one, some, or all of a switch path, link path, and flyback path power dissipation circuits to actively and selectively control power dissipation of excess energy in a switching power converter of the lighting system. The flyback path power dissipation circuit dissipates power through a flyback path of the switching power converter. In at least one embodiment, the lighting system controls power dissipation through the flyback path by controlling a transformer primary current in the flyback path and, for example, limiting the primary current with a current source and dissipating power in the flyback switch and the current source.

摘要翻译： 在至少一个实施例中，照明系统包括开关路径，链路路径和反激路径功率耗散电路中的一个，一个或全部，以有源和选择性地控制照明系统的开关功率转换器中的多余能量的功率耗散。 反激路径功耗电路通过开关电源转换器的反激路径耗散功率。 在至少一个实施例中，照明系统通过控制回扫路径中的变压器初级电流来控制通过回扫路径的功率耗散，并且例如，利用电流源限制初级电流并且在回扫开关和电流源中消耗功率 。

公开(公告)号：US09055620B1

公开(公告)日：2015-06-09

申请号：US13354120

申请日：2012-01-19

申请人： Eric J. King ,  John L. Melanson

发明人： Eric J. King ,  John L. Melanson

IPC分类号： H05B37/02 ,  H04B3/54

CPC分类号： H05B37/02 ,  H04B3/542 ,  H04B3/544 ,  H05B37/0263

摘要： A lighting system includes one or more methods and systems to control an input switching stage of a power converter to provide power for a lamp and modulate a line current supplied to the power converter to carry data related to a state of the lamp. In at least one embodiment, a single controller consolidates the functions of controlling an input stage of the power converter and communicating to an external device by modulating the line current supplied to the power converter to carry data related to a state of the lamp. The particular type of current modulation and communication protocol utilized by the consolidated power conversion-communication controller is a matter of design choice. In at least one embodiment, the lamp includes one or more electronic light sources, such as one or more light emitting diodes (LEDs) and/or one or more compact fluorescent lamps (CFLs).

摘要翻译： 照明系统包括一个或多个方法和系统，用于控制功率转换器的输入开关级以为灯提供电力并且调制提供给功率转换器的线电流以承载与灯的状态有关的数据。 在至少一个实施例中，单个控制器通过调制提供给功率转换器的线路电流来传送与灯的状态相关的数据来整合控制功率转换器的输入级并且与外部设备通信的功能。 综合电力转换通信控制器使用的当前调制和通信协议的特定类型是设计选择。 在至少一个实施例中，灯包括一个或多个电子光源，诸如一个或多个发光二极管（LED）和/或一个或多个紧凑型荧光灯（CFL）。

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

IPC分类号： H02M3/156 ,  H02M3/335 ,  H05B33/08

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。

公开(公告)号：US08841894B1

公开(公告)日：2014-09-23

申请号：US13327934

申请日：2011-12-16

申请人： Shahrzad Naraghi ,  Johann Gaboriau ,  John L. Melanson

发明人： Shahrzad Naraghi ,  Johann Gaboriau ,  John L. Melanson

IPC分类号： H02M3/155

CPC分类号： H03F3/217 ,  H02M1/38 ,  H02M3/1588 ,  H02M2001/0029 ,  H03F1/26 ,  H03F3/181 ,  Y02B70/1466

摘要： An audio switching power amplifier having an output with controlled-slope transitions maintains efficiency while avoiding uncontrolled non-overlap intervals during switching transitions. A pair of transistors forming a half-bridge that supplies an output signal at an output terminal of the amplifier are operated so that neither transistor is fully on during an overlap time period. A current source provides an output current to the output terminal during the non-overlap time period to control the output voltage while changing the transistor that conducts the output current from a first one of the pair of transistors to a second one of the pair of transistors. The current source may be provided by operation of one of the transistors in a current source configuration. The voltage of a gate of one of the transistors can be compared with a threshold to provide an indication of the current.

摘要翻译： 具有受控斜率转换的输出的音频开关功率放大器保持效率，同时在切换转换期间避免不受控制的非重叠间隔。 形成在放大器的输出端提供输出信号的半桥的一对晶体管被操作，使得在重叠时间段期间两个晶体管都不会完全导通。 电流源在非重叠时间周期期间向输出端提供输出电流，以在改变将输出电流从该对晶体管中的第一晶体管导通到该对晶体管中的第二晶体管的晶体管时控制输出电压 。 可以通过当前源配置中的晶体管之一的操作来提供电流源。 可以将晶体管中的一个的栅极的电压与阈值进行比较以提供电流的指示。

公开(公告)号：US08723438B2

公开(公告)日：2014-05-13

申请号：US12781669

申请日：2010-05-17

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

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

IPC分类号： H05B37/02

CPC分类号： H03K7/08 ,  H02M1/4225 ,  H02M1/44 ,  Y02B70/126

摘要： Power control systems generate electromagnetic interference (EMI). In at least one embodiment, a power control system includes a switching power converter and a controller that utilizes a spread spectrum strategy to reduce peak EMI values of the power control system. The controller generates a power regulation, switch control signal to control an input voltage to output voltage conversion by the switching power converter. The controller modulates the period of the control signal in accordance with the spread spectrum strategy. The spread spectrum strategy is an intentional plan to spread the spectrum of the control signal to reduce peak EMI values, and, thus, reduce the potential for degradation in performance, a malfunction, or failure of an electronic circuit caused by the EMI. The controller also modulates a pulse width of the switch control signal in response to modulation of the period of the control signal to provide power factor correction.

摘要翻译： 电源控制系统产生电磁干扰（EMI）。 在至少一个实施例中，功率控制系统包括开关功率转换器和利用扩展频谱策略来降低功率控制系统的峰值EMI值的控制器。 控制器产生功率调节，开关控制信号，以控制输入电压，由开关电源转换器输出电压转换。 控制器根据扩频策略对控制信号的周期进行调制。 扩频策略是扩展控制信号的频谱以降低EMI值的有意图，从而降低由EMI引起的性能下降，故障或电子电路故障的可能性。 控制器还响应于控制信号的周期的调制来调制开关控制信号的脉冲宽度，以提供功率因数校正。

公开(公告)号：US08680771B2

公开(公告)日：2014-03-25

申请号：US13430554

申请日：2012-03-26

申请人： Robert T. Grisamore ,  William A. Draper ,  Eric J. King ,  Michael A. Kost ,  John L. Melanson

发明人： Robert T. Grisamore ,  William A. Draper ,  Eric J. King ,  Michael A. Kost ,  John L. Melanson

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

CPC分类号： H05B37/0218 ,  H05B37/0263 ,  Y02B20/46

摘要： A controller is configured to generate one or more power control signals for a lamp to supply power to the lamp from a supply voltage. The controller is further configured to receive customization data encoded in the supply voltage. Thus, in at least one embodiment, the controller receives the customization data via one or more power terminals of the lamp. Phase cut angles in the supply voltage provided to the controller encode the customization data, and each phase cut angle encodes N symbols of data. N is an integer greater than or equal to one (1). In at least one embodiment, the customization data alters the controller from one state to another state in accordance with data represented by phase cuts in the supply voltage that encode the customization data. Examples of customization data include calibration data and configuration data.

摘要翻译： 控制器被配置为产生灯的一个或多个功率控制信号，以从电源电压向灯供电。 控制器还被配置为接收以电源电压编码的定制数据。 因此，在至少一个实施例中，控制器经由灯的一个或多个电源端子接收定制数据。 提供给控制器的电源电压中的相位角对定制数据进行编码，每个相位切角对N个数据符号进行编码。 N是大于或等于1（1）的整数。 在至少一个实施例中，定制数据根据由编码定制数据的电源电压中的相位切断表示的数据，将控制器从一种状态改变到另一种状态。 定制数据的示例包括校准数据和配置数据。

公开(公告)号：US08610365B2

公开(公告)日：2013-12-17

申请号：US13290032

申请日：2011-11-04

申请人： Eric J. King ,  John L. Melanson

发明人： Eric J. King ,  John L. Melanson

IPC分类号： H05B41/24

CPC分类号： H03K17/13 ,  H05B33/0815 ,  H05B33/0845 ,  Y02B20/346

摘要： In at least one embodiment, the controller senses a leading edge, phase cut AC input voltage value to a switching power converter during a cycle of the AC input voltage. The controller senses the voltage value at a time prior to a zero crossing of the AC input voltage and utilizes the voltage value to determine the approximate zero crossing. In at least one embodiment, by determining an approximate zero crossing of the AC input voltage, the controller is unaffected by any disturbances of the dimmer that could otherwise make detecting the zero crossing problematic. In at least one embodiment, the controller approximates the AC input voltage using a function that estimates a waveform of the AC input voltage and determines the approximate zero crossing of the AC input voltage from the approximation of the AC input voltage.

摘要翻译： 在至少一个实施例中，控制器在交流输入电压的周期期间感测到开关功率转换器的前沿，相切割AC输入电压值。 控制器感测交流输入电压过零之前的电压值，并利用电压值来确定近似过零点。 在至少一个实施例中，通过确定AC输入电压的近似零交叉，控制器不受调光器的任何干扰影响，否则可能会使检测到零交叉问题。 在至少一个实施例中，控制器使用估计AC输入电压的波形的函数来近似AC输入电压，并根据AC输入电压的近似确定AC输入电压的近似过零点。

公开(公告)号：US08536799B1

公开(公告)日：2013-09-17

申请号：US13077483

申请日：2011-03-31

申请人： Robert T. Grisamore ,  Firas S. Azrai ,  Mohit Sood ,  John L. Melanson ,  Eric J. King ,  Jean-Charles Pina

发明人： Robert T. Grisamore ,  Firas S. Azrai ,  Mohit Sood ,  John L. Melanson ,  Eric J. King ,  Jean-Charles Pina

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  G01R19/0046 ,  H05B33/0848 ,  H05B37/0218 ,  H05B37/0263 ,  Y02B20/346

摘要： In at least one embodiment, a lighting system receives an input signal, such as a supply voltage, that can be affected by a dimmer. The supply voltage can be affected by a dimmer when, for example, a dimmer phase cut (i.e. chopped) the supply voltage. A dimmer detection system of the lighting system determines if a dimmer is affecting the supply voltage. In at least one embodiment, the dimmer detection system also determines a type of the dimmer, such as detecting if the dimmer is a leading edge or trailing edge dimmer. In at least one embodiment, the dimmer detection system provides dimmer type data to one or more other circuits such as a switching power converter controller. The one or more other circuits utilize the dimmer type data to affect their operation.

公开(公告)号：US08487797B2

公开(公告)日：2013-07-16

申请号：US12889327

申请日：2010-09-23

申请人： John L. Melanson ,  Mark P. Rygh

发明人： John L. Melanson ,  Mark P. Rygh

IPC分类号： H03M3/00

CPC分类号： H04N5/76 ,  G11B20/10037 ,  G11B20/10222 ,  G11B20/10425 ,  G11B20/10527 ,  G11B20/14 ,  G11B20/225 ,  G11B2020/00065 ,  G11B2220/2562 ,  H04N9/8211

摘要： A method of operating an electronic video device such as a DVD player, wherein video clock signals and audio clock signals are derived from a system clock signal using two phase-lock loops, and these video and audio clock signals are used to process encoded video data and encoded audio data, but digital-to-analog conversion of the audio data stream is controlled by the system clock signal rather than the audio clock signals. By using the system clock signal to control the audio digital-to-analog converter (DAC), the DAC avoids the poor performance issues that can arise from jitter introduced into the audio clock signals by the PLL. The system clock signal may be divided by an integer to generate the sampling clock for the audio DAC. In the illustrative embodiment, the system clock signal has a rate which is not an integer multiple of the sample rate of the audio data stream.

摘要翻译： 一种操作诸如DVD播放器的电子视频设备的方法，其中使用两个锁相环从系统时钟信号导出视频时钟信号和音频时钟信号，并且这些视频和音频时钟信号用于处理编码视频数据 和编码音频数据，但音频数据流的数模转换由系统时钟信号而不是音频时钟信号控制。 通过使用系统时钟信号来控制音频数/模转换器（DAC），DAC避免了由PLL引入到音频时钟信号中的抖动引起的性能问题。 系统时钟信号可以被除以整数以产生用于音频DAC的采样时钟。 在说明性实施例中，系统时钟信号具有不是音频数据流的采样率的整数倍的速率。