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1. 再颁专利

USRE43265E1 Reduced output topology for multi-reference switching amplifiers 有权
标题翻译：降低多参考开关放大器的输出拓扑结构
公开(公告)号：USRE43265E1
公开(公告)日：2012-03-27
申请号：US12245579
申请日：2008-10-03
申请人： Larry Kirn
发明人： Larry Kirn
IPC分类号： H03F3/38
CPC分类号： H03F3/2173 , H03F3/217 , H03F3/38
摘要： A method and attendant circuitry reduces the number of regulatory and switching devices in a multi-reference switching amplifier. In the preferred embodiment, multiple independently-modulated effective references are summed at a load through use of both linear and switched control of switching devices.
摘要翻译：一种方法和伴随的电路减少了多参考开关放大器中的调节和开关器件的数量。在优选实施例中，通过使用开关器件的线性和开关控制，在负载下将多个独立调制的有效参考值相加。

2. 发明授权

US08138827B2 Filter compensation for switching amplifiers 失效
标题翻译：开关放大器滤波补偿
公开(公告)号：US08138827B2
公开(公告)日：2012-03-20
申请号：US13105634
申请日：2011-05-11
申请人： Larry Kirn
发明人： Larry Kirn
IPC分类号： H03F3/38
CPC分类号： H03F3/217
摘要： Embodiments of the present invention provide methods and systems for limiting bipolar current flow in a switching amplifier. Embodiments of the present invention are directed to a multi-referenced switching amplifier. In some embodiment, the switching amplifier is a dual referenced switching amplifier comprising a regulator between the two references, where the first reference provides coarse modulation to a load and the second reference provides fine modulation to the load. The dual referenced switching amplifiers comprise the output filters made up of an inductor and a capacitor. In some embodiments, fine modulation is not applied to the load, thus limiting bipolar current flow induced by the filter inductors.
摘要翻译：本发明的实施例提供用于限制开关放大器中的双极电流的方法和系统。本发明的实施例涉及多参考开关放大器。在一些实施例中，开关放大器是双参考开关放大器，其包括两个参考之间的调节器，其中第一参考为负载提供粗调制，而第二参考提供对负载的精细调制。双参考开关放大器包括由电感器和电容器组成的输出滤波器。在一些实施例中，精细调制不应用于负载，因此限制了由滤波电感器引起的双极性电流。

3. 发明授权

US08044715B2 Method and system for increasing sampling frequency for switching amplifiers 有权
标题翻译：提高开关放大器采样频率的方法和系统
公开(公告)号：US08044715B2
公开(公告)日：2011-10-25
申请号：US12524839
申请日：2008-02-01
申请人： Larry Kirn
发明人： Larry Kirn
IPC分类号： H03F3/38
CPC分类号： H03F3/217
摘要： The present invention is directed toward providing a system and method of reducing RF interference in switching amplifiers without degrading performance. In one embodiment, the sampling rate of coarse high voltage modulated pulsewidths are increased relative to the sampling rate of fine lower voltage modulated pulsewidths. This increase in the sampling rate of coarse high voltage modulated pulsewidths results in a reduction in EMI.
摘要翻译：本发明旨在提供一种在不降低性能的情况下降低开关放大器中的RF干扰的系统和方法。在一个实施例中，粗调高电压调制脉冲宽度的采样率相对于精细的较低电压调制脉冲宽度的采样率增加。粗调高电压调制脉冲宽度的采样率的这种增加导致EMI降低。

4. 发明授权

US08538040B2 Drivers and methods for driving a load 有权
标题翻译：用于驱动负载的驱动程序和方法
公开(公告)号：US08538040B2
公开(公告)日：2013-09-17
申请号：US12181279
申请日：2008-07-28
申请人： Larry Kirn
发明人： Larry Kirn
IPC分类号： H04R3/00
CPC分类号： H04R3/007
摘要： Embodiments of the present invention provide methods and devices for controlling a command signal applied to a load. In embodiments of the invention, current through and voltage across a load are determined and the values of both are used to generate a hybrid control signal. For example, in some embodiments the hybrid control signal is generated by taking a weighted summation of the current and voltage control signals. In other embodiments, a percentage of the difference between the current and voltage control signals is added to one of the current or voltage control signals to generate the hybrid control signal. In one embodiment, a potentiometer is used to generate the hybrid control signal.
摘要翻译：本发明的实施例提供了用于控制施加到负载的命令信号的方法和装置。在本发明的实施例中，确定负载上的电流和电压，并且两者的值用于产生混合控制信号。例如，在一些实施例中，通过采取电流和电压控制信号的加权求和来产生混合控制信号。在其他实施例中，电流和电压控制信号之间的差的百分比被加到电流或电压控制信号中的一个以产生混合控制信号。在一个实施例中，使用电位计来产生混合控制信号。

5. 发明授权

US08076971B2 Sampling frequency reduction for switching amplifiers 有权
标题翻译：开关放大器的采样频率降低
公开(公告)号：US08076971B2
公开(公告)日：2011-12-13
申请号：US12524843
申请日：2008-02-01
申请人： Larry Kirn
发明人： Larry Kirn
IPC分类号： H03F3/38
CPC分类号： H03F3/217
摘要： The present invention is directed toward providing a system and method of reducing RF interference in switching amplifiers without degrading performance. In one embodiment, the sampling rate of coarse high voltage modulated pulsewidths are decreased relative to the sampling rate of fine lower voltage modulated pulsewidths. This reduction in the sampling rate of coarse high voltage modulated pulsewidths results in a reduction in EMI. In addition, the higher sampling rate of the fine lower voltage modulated pulsewidths mitigates the distortion caused by the reduced sampling rate of the coarse pulsewidths.
摘要翻译：本发明旨在提供一种在不降低性能的情况下降低开关放大器中的RF干扰的系统和方法。在一个实施例中，粗调高电压调制脉冲宽度的采样率相对于精细的较低电压调制脉冲宽度的采样率降低。粗略的高电压调制脉冲宽度的采样率的这种降低导致EMI的降低。此外，精细的较低电压调制脉冲宽度的较高采样率减轻了由粗略的脉冲宽度的降低的采样率引起的失真。

6. 发明授权

US07489489B2 Load current sensing technique 有权
标题翻译：负载电流检测技术
公开(公告)号：US07489489B2
公开(公告)日：2009-02-10
申请号：US10916128
申请日：2004-08-11
申请人： Larry Kim
发明人： Larry Kim
IPC分类号： H02H3/00 , H02H1/00
CPC分类号： G01R19/0092 , H03F3/217 , H03K17/0822
摘要： Methods and apparatus regulate the output of a switching device to a voltage near that of saturation. In the preferred embodiment, this is accomplished for a small period of time during activation before and/or after device saturation. The switching device drive requirement is then measured to attain the regulated voltage. Measurement of the drive requirement during the small period of time correlates to switching driver current, being reliant on the finite gain of the switching device.
摘要翻译：方法和装置将开关装置的输出调节到接近饱和的电压。在优选实施例中，这在设备饱和之前和/或之后的激活期间完成一小段时间。然后测量开关器件驱动要求以获得调节电压。在小时间段期间的驱动要求的测量与开关驱动器电流相关，这取决于开关器件的有限增益。

7. 再颁专利

USRE42470E1 Synchronous delay-line amplification technique 有权
标题翻译：同步延迟线放大技术
公开(公告)号：USRE42470E1
公开(公告)日：2011-06-21
申请号：US12483906
申请日：2009-06-12
申请人： Larry Kirn
发明人： Larry Kirn
IPC分类号： H03B27/00
CPC分类号： H03F3/217 , G06F1/025 , H03F2200/351 , H03K3/0315 , H03K7/08 , H03K2005/00247
摘要： An open-loop switching amplifier achieves synchronous operation using a ring oscillator based upon a tapped delay line. A counter is clocked from the ring oscillator, periodically comparing incoming more significant data to the value of the counter to form a pulsewidth modulated output waveform. Modulating the effective width of the output waveform in incremental delay line taps is equivalent to incoming less significant data. This technique then effects time-period summation of coarse and fine resolution clocked data.
摘要翻译：开环开关放大器使用基于抽头延迟线的环形振荡器实现同步操作。计数器由环形振荡器计时，周期性地将输入的更高有效数据与计数器的值进行比较，形成脉宽调制输出波形。在增量延迟线抽头中调制输出波形的有效宽度相当于传入的较不重要的数据。然后，该技术实现粗分辨率和精细分辨率时钟数据的时间周期求和。

8. 再颁专利

USRE44406E1 Method of detecting switching power supply output current 有权
标题翻译：检测开关电源输出电流的方法
公开(公告)号：USRE44406E1
公开(公告)日：2013-08-06
申请号：US12019623
申请日：2008-01-24
申请人： Larry Kirn
发明人： Larry Kirn
IPC分类号： G05F1/652 , G05F1/656
CPC分类号： H02M3/156 , H02M2001/0009
摘要： A method and apparatus for detecting output current in switching power supplies forgoes the need for any resistor or other components in series with the load. A method according to the invention includes the steps of inferring the peak current through the inductor as a function of input voltage and inductor charge time, and deriving the current available to the load based upon the flyback voltage during discharge of the inductor. Although a disclosed example is based upon a buck/boost topology, other converter topologies are anticipated. In terms of apparatus, in a switching power supply of the type wherein a switching device is used to charge an inductor that discharges to a load, the invention provides devices arranged for detecting output current without the need for a resistor or other component in series with the load. In the preferred embodiment, these devices include electrical components operative to generate a signal indicative of peak inductor current, and a switch for switching the signal to provide a waveform, the integral of which is proportional to peak inductor current multiplied by the duty cycle of the discharge of the inductor. Circuitry is further used for comparing the waveform to a fixed reference so as to output a signal indicative of load current.
摘要翻译：用于检测开关电源中的输出电流的方法和装置禁止对负载串联的任何电阻器或其它部件的需要。根据本发明的方法包括以下步骤：根据输入电压和电感器充电时间推断通过电感器的峰值电流，并且基于在电感器放电期间的反激电压导出可用于负载的电流。虽然公开的示例基于降压/升压拓扑，但是预期其它转换器拓扑。在装置方面，在使用开关装置对放电到负载的电感器进行充电的开关电源中，本发明提供了用于检测输出电流的装置，而不需要与电阻器或其它组件串联的电阻器负载。在优选实施例中，这些器件包括可用于产生指示峰值电感器电流的信号的电气部件，以及用于切换信号以提供波形的开关，该波形的积分与峰值电感器电流成比例，乘以放电电感。电路进一步用于将波形与固定基准进行比较，以输出指示负载电流的信号。

9. 发明授权

US08482350B2 Low RF interference switching amplifier and method 有权
标题翻译：低RF干扰开关放大器和方法
公开(公告)号：US08482350B2
公开(公告)日：2013-07-09
申请号：US12749187
申请日：2010-03-29
申请人： Larry Kirn
发明人： Larry Kirn
IPC分类号： H03F3/217
CPC分类号： H03F1/26 , H03F3/2173 , H03F2200/33 , H03F2200/372
摘要： A switching amplifier includes first and second output terminals that may be connected to a load. A pulse-width modulator receiving an input signal to obtain respective positive and negative values of the input signal. The modulator is connected to first and second switching circuits. The first switching circuit applies a plurality of pulses to the first output terminal that, in response to the positive samples, have a constant frequency and are pulse-width modulated, and, in response to the negative samples, have a varying frequency and a constant width. Similarly, the second switching circuit applies a plurality of pulses to the second output terminal that, in response to the negative samples, have a constant frequency and are pulse-width modulated, and, in response to the positive samples, have a varying frequency and a constant width. The varying phase of the constant width pulses disperses RF interference across a wider spectrum.
摘要翻译：开关放大器包括可连接到负载的第一和第二输出端子。接收输入信号的脉冲宽度调制器以获得输入信号的相应正值和负值。调制器连接到第一和第二开关电路。第一开关电路向第一输出端施加多个脉冲，响应于正采样，其具有恒定频率并被脉冲宽度调制，并且响应于负采样具有变化的频率和常数宽度。类似地，第二开关电路向第二输出端施加多个脉冲，其响应于负采样具有恒定频率并且被脉宽调制，并且响应于正采样具有变化的频率和恒定宽度。恒定宽度脉冲的变化相位在更宽的频谱上分散射频干扰。

10. 发明授权

US07948308B2 Filter compensation for switching amplifiers 有权
标题翻译：开关放大器滤波补偿
公开(公告)号：US07948308B2
公开(公告)日：2011-05-24
申请号：US12524841
申请日：2008-01-30
申请人： Larry Kirn
发明人： Larry Kirn
IPC分类号： H03F3/38 , H03F3/217
CPC分类号： H03F3/217
摘要： Embodiments of the present invention provide methods and systems for limiting bipolar current flow in a switching amplifier. Embodiments of the present invention are directed to a multi-referenced switching amplifier. In some embodiment, the switching amplifier is a dual referenced switching amplifier comprising a regulator between the two references, where the first reference provides coarse modulation to a load and the second reference provides fine modulation to the load. The dual referenced switching amplifiers comprise the output filters made up of an inductor and a capacitor. In some embodiments, fine modulation is not applied to the load, thus limiting bipolar current flow induced by the filter inductors.
摘要翻译：本发明的实施例提供用于限制开关放大器中的双极电流的方法和系统。本发明的实施例涉及多参考开关放大器。在一些实施例中，开关放大器是双参考开关放大器，其包括两个参考之间的调节器，其中第一参考为负载提供粗调制，而第二参考提供对负载的精细调制。双参考开关放大器包括由电感器和电容器组成的输出滤波器。在一些实施例中，精细调制不应用于负载，因此限制了由滤波电感器引起的双极性电流。

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