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21. 发明申请

US20070183490A1 PWM Feedback/Feed-forward Protection 有权
标题翻译： PWM反馈/前馈保护
公开(公告)号：US20070183490A1
公开(公告)日：2007-08-09
申请号：US11672191
申请日：2007-02-07
申请人： Jack B. Andersen , Peter G. Craven , Daniel L. W. Chieng , Michael A. Kost
发明人： Jack B. Andersen , Peter G. Craven , Daniel L. W. Chieng , Michael A. Kost
IPC分类号： H03K9/08
CPC分类号： H03F3/2171 , H03F1/32 , H03F1/52 , H03F1/523 , H03F3/2175 , H03F2200/03 , H03F2200/153 , H03F2200/351
摘要： Systems and methods for improving the stability of feedback and/or feed-forward subsystems in digital amplifiers. One embodiment comprises a digital pulse width modulation (PWM) controller. The controller includes an input for receiving a digital audio input signal and is configured to generate a PWM output signal based on the input signal at an output. The controller also has control inputs for receiving external audio correction signals such as feedback and power supply feed-forward signals. The controller has correction circuitry for processing the received external control signals and modifying the input signal based on these signals. Fault detectors monitor fault conditions at various locations within the correction circuitry, and a protection control unit receives fault signals from the fault detectors and modifies operation of the controller in response to the fault signals.
摘要翻译：用于提高数字放大器中反馈和/或前馈子系统稳定性的系统和方法。一个实施例包括数字脉宽调制（PWM）控制器。控制器包括用于接收数字音频输入信号的输入端，并且被配置为基于输出端的输入信号产生PWM输出信号。控制器还具有用于接收外部音频校正信号（如反馈和电源前馈信号）的控制输入。该控制器具有校正电路，用于处理所接收的外部控制信号，并根据这些信号修改输入信号。故障检测器监视校正电路内的各个位置的故障状况，保护控制单元从故障检测器接收故障信号，并根据故障信号修改控制器的操作。

22. 发明申请

US20070176660A1 Systems and Methods for Pulse Width Modulating Asymmetric Signal Levels 有权
标题翻译：脉宽调制不对称信号电平的系统与方法
公开(公告)号：US20070176660A1
公开(公告)日：2007-08-02
申请号：US11669643
申请日：2007-01-31
申请人： Jack B. Andersen , Michael A. Kost
发明人： Jack B. Andersen , Michael A. Kost
IPC分类号： H03K3/017
CPC分类号： H03K7/08 , H03F3/2173 , H03F2200/03 , H03F2200/351
摘要： Systems and methods for pulse width modulating waveforms to represent asymmetric signal levels using pulses that are symmetric within their respective switching periods. One embodiment comprises a pulse width modulation system including an asymmetric correction unit and a pair of modulators. The asymmetric correction unit receives samples of an input signal and produces two separate output signals for corresponding modulators. For each sample, the asymmetric correction unit determines whether the signal level of the sample is symmetric or asymmetric. If the signal level of the sample is symmetric, the sample is forwarded to each of the modulators. If the signal level is asymmetric, the asymmetric correction unit increases one modified sample to the next higher symmetric signal level and decreases another modified sample to the next lower symmetric signal level and forwards the modified samples to the modulators.
摘要翻译：用于脉冲宽度调制波形的系统和方法，以使用在其各自的切换周期内对称的脉冲来表示不对称信号电平。一个实施例包括包括非对称校正单元和一对调制器的脉宽调制系统。不对称校正单元接收输入信号的采样，并为相应的调制器产生两个分离的输出信号。对于每个样本，不对称校正单元确定样本的信号电平是对称还是不对称。如果样品的信号电平是对称的，则将样品转发到每个调制器。如果信号电平不对称，则不对称校正单元将一个修改的采样增加到下一个较高的对称信号电平，并将另一个修改的采样降低到下一个较低对称信号电平，并将修改的采样转发到调制器。

23. 发明授权

US08866452B1 Variable minimum input voltage based switching in an electronic power control system 有权
标题翻译：电子功率控制系统中可变最小输入电压的切换
公开(公告)号：US08866452B1
公开(公告)日：2014-10-21
申请号：US13206836
申请日：2011-08-10
申请人： Michael A. Kost , Celite Milbrandt
发明人： Michael A. Kost , Celite Milbrandt
IPC分类号： H02M3/156
CPC分类号： H02M1/4225 , H02M3/156 , H02M2001/0032 , H02M2001/0054 , Y02B70/126 , Y02B70/1491 , Y02B70/16
摘要： An electronic system includes a controller that controls switching in a switching power converter in accordance with a dynamically determined, minimum line voltage switching threshold based on one or more operating parameters of the electronic system. In at least one embodiment, the one or more operating parameters of the electronic system include power utilization of a load. The controller utilizes the dynamically determined, minimum line voltage switching threshold to determine when to enable and disable switching in the switching power converter. Since the controller bases determination of the dynamically determined, minimum line voltage switching threshold on power utilization of the load, the controller operates more efficiently by reducing switching losses while still meeting power demand by the load.
摘要翻译：电子系统包括控制器，该控制器基于电子系统的一个或多个操作参数，根据动态确定的最小线路电压切换阈值来控制开关功率转换器中的开关。在至少一个实施例中，电子系统的一个或多个操作参数包括负载的功率利用。控制器利用动态确定的最小线路电压切换阈值来确定何时启动和禁用开关功率转换器中的开关。由于控制器基于动态确定的负载功率利用率的最小线路电压切换阈值，所以控制器在仍然满足负载的电力需求的同时降低开关损耗来更有效地操作。

24. 发明授权

US08581504B2 Switching power converter control with triac-based leading edge dimmer compatibility 有权
标题翻译：开关电源转换器控制采用基于triac的前沿调光器兼容性
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。

25. 发明申请

US20100164406A1 SWITCHING POWER CONVERTER CONTROL WITH TRIAC-BASED LEADING EDGE DIMMER COMPATIBILITY 有权
标题翻译：使用基于TRIAC的引线边缘调光器兼容性切换电源转换器控制
公开(公告)号：US20100164406A1
公开(公告)日：2010-07-01
申请号：US12347138
申请日：2008-12-31
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。

26. 发明授权

US09178415B1 Inductor over-current protection using a volt-second value representing an input voltage to a switching power converter 有权
标题翻译：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
IPC分类号： H02M1/00 , H02M3/00 , H02M3/156
CPC分类号： H02M3/157 , H02M1/00 , H02M1/32 , H02M3/00 , H02M3/156 , H02M2001/0009
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。

27. 发明申请

US20090058549A1 Systems and Methods to Minimize Startup Transients in Class D Amplifiers 有权
标题翻译：最小化D类放大器启动瞬变的系统和方法
公开(公告)号：US20090058549A1
公开(公告)日：2009-03-05
申请号：US11847449
申请日：2007-08-30
申请人： Michael A. Kost
发明人： Michael A. Kost
IPC分类号： H03K7/08
CPC分类号： H03K7/08 , H03F1/305 , H03F3/2171 , H03K5/1515
摘要： Systems and methods for minimizing startup transients in digital audio controllers that may result in audible artifacts in the output of an audio amplification system. One embodiment comprises a digital PWM amplifier that includes a mechanism for controlling the amount of dead time in the audio output signal. When the amplifier starts up, the PWM signals provided to the output stage are simultaneously deasserted (i.e., there is dead time) for most of each switch period. The amount of dead time is gradually reduced over a series of switch periods until a nominal operating amount of dead time in each switch period is reached. Thus, the PWM signals are slowly ramped up from having a very large percentage of dead time (e.g., nearly 100%) to having a very small percentage of dead time (e.g., 1-2% to prevent shoot-through.)
摘要翻译：用于最小化数字音频控制器中的启动瞬变的系统和方法，其可能导致音频放大系统的输出中的可听见的伪影。一个实施例包括数字PWM放大器，其包括用于控制音频输出信号中的死区时间量的机构。当放大器启动时，提供给输出级的PWM信号在每个开关周期的大部分时间同时被断言（即，存在死区时间）。在一系列开关周期内死区时间逐渐减少，直到达到每个开关周期内的死区时间的标称操作量。因此，PWM信号从死区时间的很大百分比（例如近100％）缓慢上升到具有非常小百分比的死区时间（例如，1-2％以防止直通）。

28. 发明授权

US08437478B2 Systems and methods for improved over-current clipping 有权
标题翻译：改进过流限幅的系统和方法
公开(公告)号：US08437478B2
公开(公告)日：2013-05-07
申请号：US13284723
申请日：2011-10-28
申请人： Michael A. Kost
发明人： Michael A. Kost
IPC分类号： H03F3/38 , H03G11/00
CPC分类号： H03F3/2173 , H03F1/523 , H03F3/185 , H04R3/007
摘要： Systems and methods for implementing over-current protection include reducing a clip level while an over-current condition is being detected. Once the over-current condition is no longer detected, the clip level is maintained for a specified period before allowing the clip level to be increased. In an embodiment, the specified period, for which the clip level is maintained before the clip level is allowed to be increased, starts when the over-current condition is no longer detected, and ends when each of N immediately preceding sample(s) of the audio signal are not clipped to the clip level, where N is an integer ≧1. After an over-current condition is no longer detected, and after the clip level has been maintained for the specified period, the clip level can be increased if an over-current condition is not detected for a sample and the clip level is below a specified maximum clip level.
摘要翻译：用于实现过电流保护的系统和方法包括在检测到过电流状况的同时减小钳位电平。一旦不再检测到过电流条件，则在允许增加剪辑级别之前，将剪辑级别保持指定的时间段。在一个实施例中，在不再检测到过电流状态的情况下，在允许增加剪辑级别之前保持剪辑级别的指定时段开始，并且当N个紧前面的样本音频信号不会剪辑到剪辑级别，其中N是整数> = 1。在不再检测到过电流状态之后，并且在剪辑级别已经维持指定的时间段之后，如果对于样本未检测到过电流状况并且剪辑级别低于指定的范围，则可以增加剪辑级别最大剪辑级别。

29. 发明申请

US20120306407A1 Primary-Side Control Of A Switching Power Converter With Feed Forward Delay Compensation 有权
标题翻译：具有前馈延迟补偿的开关电源转换器的初级侧控制
公开(公告)号：US20120306407A1
公开(公告)日：2012-12-06
申请号：US13486947
申请日：2012-06-01
申请人： Zhaohui He , Robert T. Grisamore , Michael A. Kost
发明人： Zhaohui He , Robert T. Grisamore , Michael A. Kost
IPC分类号： G05F1/10 , H02M3/335 , H05B37/02
CPC分类号： H05B33/0815 , Y02B20/346
摘要： An electronic system includes controller to control a switching power converter to provide power to a load. To control the amount of power provided to the load, in at least one embodiment, the controller senses a current value representing a current in the switching power converter and detects when the current value reaches a target peak value. However, due to delays in the controller and/or the switching power converter, the detected target peak value will not be the actual current peak value generated by the switching power converter. In at least one embodiment, the controller adjusts the detected target peak value with a post-detection delay compensation factor to generate a delay compensated current value that more accurately represents an actual peak current value associated with the current in the switching power converter.
摘要翻译：电子系统包括控制器以控制开关功率转换器以向负载提供电力。为了控制提供给负载的功率量，在至少一个实施例中，控制器检测表示开关功率转换器中的电流的电流值，并检测当前值何时达到目标峰值。然而，由于控制器和/或开关功率转换器的延迟，检测到的目标峰值将不是由开关功率转换器产生的实际电流峰值。在至少一个实施例中，控制器利用检测后延迟补偿因子调整检测到的目标峰值，以产生更准确地表示与开关功率转换器中的电流相关联的实际峰值电流值的延迟补偿电流值。

30. 发明申请

US20120242242A1 Color Coordination Of Electronic Light Sources With Dimming And Temperature Responsiveness 有权
标题翻译：电子光源的颜色协调与调光和温度响应
公开(公告)号：US20120242242A1
公开(公告)日：2012-09-27
申请号：US13430601
申请日：2012-03-26
申请人： Alfredo R. Linz , Michael A. Kost , Sahil Singh
发明人： Alfredo R. Linz , Michael A. Kost , Sahil Singh
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0866 , H05B33/0872
摘要： A lighting system includes one or more methods and systems to control the color spectrum of a lamp in response to both temperature and dim levels. In at least one embodiment, the lighting system includes a controller to control a correlated color temperature (CCT) and intensity of the lamp by independently adjusting currents to electronic light sources based on a dim level of the lighting system and temperature of the lighting system. The controller controls a first current to a first set of LEDs and a second current to a second set of LEDs. The control of the first current by the controller is jointly dependent on a dim level and temperature in the lighting system. In at least one embodiment, the control of the second current is dependent on the dim level or the dim level and temperature.
摘要翻译：照明系统包括响应于温度和昏暗水平来控制灯的色谱的一种或多种方法和系统。在至少一个实施例中，照明系统包括控制器，其通过基于照明系统的昏暗水平和照明系统的温度独立地调节电流至电子光源的电流来控制相关色温（CCT）和灯的强度。控制器控制到第一组LED的第一电流和到第二组LED的第二电流。控制器对第一电流的控制与照明系统中的昏暗水平和温度有关。在至少一个实施例中，第二电流的控制取决于昏暗水平或暗淡水平和温度。

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