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1. 发明申请

US20110075723A1 Thermal Feedback for Switch Mode Amplification 有权
标题翻译：开关模式放大的热反馈
公开(公告)号：US20110075723A1
公开(公告)日：2011-03-31
申请号：US12909262
申请日：2010-10-21
申请人： John L. Melanson , Xiaofan Fei , Johann G. Gaboriau , Steven Green , Jason P. Rhode , Eric Walburger , Wilson E. Taylor, JR.
发明人： John L. Melanson , Xiaofan Fei , Johann G. Gaboriau , Steven Green , Jason P. Rhode , Eric Walburger , Wilson E. Taylor, JR.
IPC分类号： H03K9/08
CPC分类号： H03F3/2175 , H03F1/52 , H03F3/2173 , H03F2200/331 , H03F2200/447
摘要： A thermal sensor at the output of a switching amplifier senses heat dissipation at the output switch. If an overheating condition is sensed, gain of the digital input signal is lowered to reduce output power of the audio output signal.
摘要翻译：开关放大器输出端的热传感器感测输出开关的散热。如果感测到过热状况，数字输入信号的增益被降低以降低音频输出信号的输出功率。

2. 发明授权

US08447050B2 Thermal feedback for switch mode amplification 有权
标题翻译：开关模式放大的热反馈
公开(公告)号：US08447050B2
公开(公告)日：2013-05-21
申请号：US12909262
申请日：2010-10-21
申请人： John L. Melanson , Xiaofan Fei , Johann G. Gaboriau , Steven Green , Jason P. Rhode , Eric Walburger , Wilson E. Taylor, Jr.
发明人： John L. Melanson , Xiaofan Fei , Johann G. Gaboriau , Steven Green , Jason P. Rhode , Eric Walburger , Wilson E. Taylor, Jr.
IPC分类号： H03F99/00 , H03F3/38
CPC分类号： H03F3/2175 , H03F1/52 , H03F3/2173 , H03F2200/331 , H03F2200/447
摘要： A thermal sensor at the output of a switching amplifier senses heat dissipation at the output switch. If an overheating condition is sensed, gain of the digital input signal is lowered to reduce output power of the audio output signal.
摘要翻译：开关放大器输出端的热传感器感测输出开关的散热。如果感测到过热状况，数字输入信号的增益被降低以降低音频输出信号的输出功率。

3. 发明授权

US07840015B1 Thermal feedback for switch mode amplification 有权
标题翻译：开关模式放大的热反馈
公开(公告)号：US07840015B1
公开(公告)日：2010-11-23
申请号：US10234896
申请日：2002-09-04
申请人： John L. Melanson , Xiaofan Fei , Johann G. Gaboriau , Steven Green , Jason P. Rhode , Eric Walburger , Wilson E. Taylor, Jr.
发明人： John L. Melanson , Xiaofan Fei , Johann G. Gaboriau , Steven Green , Jason P. Rhode , Eric Walburger , Wilson E. Taylor, Jr.
IPC分类号： H03G3/00 , H03G3/20 , H03F3/38
CPC分类号： H03F3/2175 , H03F1/52 , H03F3/2173 , H03F2200/331 , H03F2200/447
摘要： A thermal sensor at the output of a switching amplifier senses heat dissipation at the output switch. If an overheating condition is sensed, gain of the digital input signal is lowered to reduce output power of the audio output signal.
摘要翻译：开关放大器输出端的热传感器感测输出开关的散热。如果感测到过热状况，数字输入信号的增益被降低以降低音频输出信号的输出功率。

4. 发明授权

US06538590B1 Transient noise reduction circuits, systems and methods in power digital-to-analog converters 有权
标题翻译：功率数模转换器中的瞬态降噪电路，系统和方法
公开(公告)号：US06538590B1
公开(公告)日：2003-03-25
申请号：US09825080
申请日：2001-04-02
申请人： Johann Guy Gaboriau , Eric Walburger , John Laurence Melanson , Xiaofan Fei
发明人： Johann Guy Gaboriau , Eric Walburger , John Laurence Melanson , Xiaofan Fei
IPC分类号： H03M166
CPC分类号： H03F3/2173 , H03F3/2171 , H03F2200/331 , H03M1/0881 , H03M1/822
摘要： A system for suppressing transient noise in switched-mode amplifier systems is disclosed. An amplifier, for amplifying a signal from a digital signal source includes a first complementary metal oxide semiconductor field effect transistor (MOSFET) pair. A common node of the pair is serially coupled to an output node of the amplifier by a resistor. The first MOSFET pair is configured to drive a ramp on the output node of the amplifier.
摘要翻译：公开了一种用于抑制开关式放大器系统中的瞬态噪声的系统。用于放大来自数字信号源的信号的放大器包括第一互补金属氧化物半导体场效应晶体管（MOSFET）对。该对的公共节点通过电阻器串联耦合到放大器的输出节点。第一个MOSFET对被配置为驱动放大器的输出节点上的斜坡。

5. 发明授权

US06522273B1 Circuits systems and methods for power digital-to-analog converter protection 有权
标题翻译：用于电源数模转换器保护的电路系统和方法
公开(公告)号：US06522273B1
公开(公告)日：2003-02-18
申请号：US09825091
申请日：2001-04-02
申请人： Xiaofan Fei , Johann Guy Gaboriau , Jason Powell Rhode , John Laurence Melanson , Eric Walburger
发明人： Xiaofan Fei , Johann Guy Gaboriau , Jason Powell Rhode , John Laurence Melanson , Eric Walburger
IPC分类号： H03M116
CPC分类号： H03M1/0604 , H03M1/822 , H03M3/506 , H03M3/51
摘要： An apparatus and method for power digital-to-analog converter protection are implemented. An attenuation value is set in response to the value of the supply voltage. The attenuation value is provided to a gain control, along with the input signal. A gain, offset by the attenuation value, determines the gain-adjusted output signal of the gain control generated from the input signal.
摘要翻译：实现了功率数模转换器保护的装置和方法。响应于电源电压的值设置衰减值。衰减值与输入信号一起提供给增益控制。通过衰减值偏移的增益确定从输入信号产生的增益控制的增益调整输出信号。

6. 发明授权

US06597240B1 Circuits and methods for slew rate control and current limiting in switch-mode systems 有权
标题翻译：开关模式系统中的转换速率控制和电流限制的电路和方法
公开(公告)号：US06597240B1
公开(公告)日：2003-07-22
申请号：US09825443
申请日：2001-04-02
申请人： Eric Walburger , John Laurence Melanson
发明人： Eric Walburger , John Laurence Melanson
IPC分类号： H03F338
CPC分类号： H03F3/2171 , H03F2200/294 , H03F2200/372
摘要： An apparatus and method for limiting the output current in a switched mode amplifier are implemented. The apparatus includes a driver amplifier configurable for selective operation in one of three modes. The amplifier is operable for transitioning between the first mode and one of the second and third modes in response to a state of an output node of the driver. Bias circuitry, configurable for selective coupling to the driver amplifier is operable for limiting the output current of the amplifier in the first operating mode.
摘要翻译：实现了用于限制开关模式放大器中的输出电流的装置和方法。该装置包括可配置为以三种模式之一选择性操作的驱动放大器。放大器可操作用于响应于驱动器的输出节点的状态在第一模式和第二和第三模式之一之间转换。可配置用于选择性耦合到驱动放大器的偏置电路可操作用于在第一操作模式中限制放大器的输出电流。

7. 发明授权

US06529074B1 Circuits and methods for output impedance matching in switched mode circuits 有权
标题翻译：在开关模式电路中输出阻抗匹配的电路和方法
公开(公告)号：US06529074B1
公开(公告)日：2003-03-04
申请号：US09917311
申请日：2001-07-26
申请人： John Laurence Melanson , Eric Walburger , Johann Guy Gaboriau
发明人： John Laurence Melanson , Eric Walburger , Johann Guy Gaboriau
IPC分类号： H03F3217
CPC分类号： H03F3/2171 , H03F2200/294 , H03F2200/372 , H03K17/145
摘要： An output stage 300 includes a first output switch 201 having a current path for driving an output from a first voltage rail and a second output switch 202 having a current path for selectively driving the output from a second voltage rail. A first reference switch 301 is scaled with respects to first output switch 201 and has a current path coupled to the first voltage rail. A second reference switch 302 scaled with respects to second output switch 202 has a current path coupled to a current path of first reference switch 301 at a node and the second voltage rail. The logic measures an impedance mismatch between first and second reference switches 301, 302 and proportionally varies the impedance of a selected one of first and second output switches 201, 202 in response.
摘要翻译：输出级300包括具有用于驱动来自第一电压轨的输出的电流路径的第一输出开关201和具有用于选择性地驱动来自第二电压轨的输出的电流路径的第二输出开关202。第一参考开关301相对于第一输出开关201被缩放，并且具有耦合到第一电压轨的电流路径。相对于第二输出开关202缩放的第二参考开关302具有耦合到节点处的第一参考开关301的电流路径的电流路径和第二电压轨。该逻辑测量第一和第二参考开关301,302之间的阻抗不匹配，并且响应地按比例地改变第一和第二输出开关201,202中所选择的一个的阻抗。

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