公开(公告)号：US07675362B2

公开(公告)日：2010-03-09

申请号：US12144591

申请日：2008-06-23

申请人： Fu-Yuan Chen ,  Ming-Hung Chang ,  Yueh-Ping Yu

发明人： Fu-Yuan Chen ,  Ming-Hung Chang ,  Yueh-Ping Yu

IPC分类号： H03F3/217

CPC分类号： H03F3/217

摘要： A switching amplifier includes an input end for receiving an input signal, a reference signal reception end for receiving a reference signal, a feedback end for receiving a feedback signal, an output end for outputting an output signal, an integration circuit for performing integration operation on the input signal according to the output signal and the feedback signal, so as to generate an integration result, a comparison circuit coupled to the integration circuit, the reference signal end, and the output end, for comparing the integration result and the reference signal, so as to generate the output signal for the output end, and a feedback circuit coupled between an output end of the integration circuit and the feedback end, for generating the feedback signal for the feedback end to clamp the integration result to a predetermined value when the integration result reaches the predetermined value.

摘要翻译： 开关放大器包括用于接收输入信号的输入端，用于接收参考信号的参考信号接收端，用于接收反馈信号的反馈端，用于输出输出信号的输出端，用于执行积分运算的积分电路 根据输出信号和反馈信号的输入信号，以产生积分结果，耦合到积分电路的比较电路，参考信号端和输出端，用于比较积分结果和参考信号， 以产生用于输出端的输出信号，以及耦合在积分电路的输出端和反馈端之间的反馈电路，用于产生用于反馈端的反馈信号，以将积分结果钳位到预定值时 积分结果达到预定值。

公开(公告)号：US20090160551A1

公开(公告)日：2009-06-25

申请号：US12144591

申请日：2008-06-23

申请人： Fu-Yuan Chen ,  Ming-Hung Chang ,  Yueh-Ping Yu

发明人： Fu-Yuan Chen ,  Ming-Hung Chang ,  Yueh-Ping Yu

IPC分类号： H03F3/217

CPC分类号： H03F3/217

摘要： A switching amplifier includes an input end for receiving an input signal, a reference signal reception end for receiving a reference signal, a feedback end for receiving a feedback signal, an output end for outputting an output signal, an integration circuit for performing integration operation on the input signal according to the output signal and the feedback signal, so as to generate an integration result, a comparison circuit coupled to the integration circuit, the reference signal end, and the output end, for comparing the integration result and the reference signal, so as to generate the output signal for the output end, and a feedback circuit coupled between an output end of the integration circuit and the feedback end, for generating the feedback signal for the feedback end to clamp the integration result to a predetermined value when the integration result reaches the predetermined value.

摘要翻译： 开关放大器包括用于接收输入信号的输入端，用于接收参考信号的参考信号接收端，用于接收反馈信号的反馈端，用于输出输出信号的输出端，用于执行积分运算的积分电路 根据输出信号和反馈信号的输入信号，以产生积分结果，耦合到积分电路的比较电路，参考信号端和输出端，用于比较积分结果和参考信号， 以产生用于输出端的输出信号，以及耦合在积分电路的输出端和反馈端之间的反馈电路，用于产生用于反馈端的反馈信号，以将积分结果钳位到预定值时 积分结果达到预定值。

公开(公告)号：US20070035341A1

公开(公告)日：2007-02-15

申请号：US11163158

申请日：2005-10-07

申请人： Ming-Hung Chang ,  Fu-Yuan Chen

发明人： Ming-Hung Chang ,  Fu-Yuan Chen

IPC分类号： H03F3/217

CPC分类号： H03F3/217 ,  H03F1/32 ,  H03F1/34 ,  H03F2200/144 ,  H03F2200/351

摘要： An amplifier circuit includes a feedback loop; a former stage amplifier unit coupled to an input node of the amplifier circuit and the feedback loop for amplifying the difference between an input signal received from the input node and an output signal which comes back through the feedback loop, and outputting a first output signal; a compensating amplifier unit coupled to the former stage amplifier unit for amplifying the first output signal and outputting a second output signal; and an output stage amplifier unit coupled to the compensating amplifier unit and the feedback loop for outputting a third output signal according to the second output signal.

摘要翻译： 放大器电路包括反馈回路; 耦合到放大器电路的输入节点的前级放大器单元和用于放大从输入节点接收的输入信号与通过反馈回路返回的输出信号之间的差异的反馈回路，并输出第一输出信号; 耦合到前级放大器单元的补偿放大器单元，用于放大第一输出信号并输出​​第二输出信号; 以及输出级放大器单元，其耦合到所述补偿放大器单元和所述反馈回路，用于根据所述第二输出信号输出第三输出信号。

公开(公告)号：US07924088B1

公开(公告)日：2011-04-12

申请号：US12641268

申请日：2009-12-17

申请人： Yu-Chen Chiang ,  Ming-Hung Chang ,  Fu-Yuan Chen

发明人： Yu-Chen Chiang ,  Ming-Hung Chang ,  Fu-Yuan Chen

IPC分类号： H03F1/02

CPC分类号： H03F3/45475 ,  H03F3/45937 ,  H03F2200/375 ,  H03F2203/45048 ,  H03F2203/45528 ,  H03F2203/45562 ,  H03F2203/45586 ,  H03F2203/45594 ,  H03F2203/45614 ,  H03F2203/45616

摘要： An offset voltage calibration method is disclosed, which is utilized for calibrating an offset voltage of an electronic device during a calibration period. The offset voltage calibration method includes generating a control signal according to an output signal of the electronic device, counting a count value and generating an offset indication signal according to the control signal, stopping counting and generating a final count value according to a compensation value after the output signal changes state, generating a calibration signal according to the count value or the final count value, and calibrating the offset voltage according to the offset indication signal and the calibration signal.

摘要翻译： 公开了一种偏移电压校准方法，其用于在校准周期期间校准电子设备的偏移电压。 偏移电压校准方法包括根据电子设备的输出信号产生控制信号，对计数值进行计数，并根据控制信号产生偏移指示信号，停止计数，并根据后面的补偿值产生最终计数值 输出信号改变状态，根据计数值或最终计数值产生校准信号，并根据偏移指示信号和校准信号校准偏移电压。

公开(公告)号：US20060284677A1

公开(公告)日：2006-12-21

申请号：US11389194

申请日：2006-03-27

申请人： Ming-Hung Chang ,  Fu-Yuan Chen

发明人： Ming-Hung Chang ,  Fu-Yuan Chen

IPC分类号： H03F3/217

CPC分类号： H03F3/217 ,  H03F3/2173 ,  H03F2200/384

摘要： In a switching amplifier for generating a pair of output signals of square waves in response to an input signal, when the input signal is zero, the first output signal has a first duty cycle and the second output signal has a second duty cycle; when the input signal is greater than zero, the first output signal has a third duty cycle varying with the input signal and the second output signal still has the second duty cycle; and when the input signal is less than zero, the first output signal has the first duty cycle and the second output signal has a fourth duty cycle varying with the input signal. The first and second duty cycles are very small but equal to each other in size, and the phase difference between the first and second output signals could range from 0 to 180 degrees.

摘要翻译： 在用于响应于输入信号产生一对方波输出信号的开关放大器中，当输入信号为零时，第一输出信号具有第一占空比，第二输出信号具有第二占空比; 当输入信号大于零时，第一输出信号具有随输入信号而变化的第三占空比，第二输出信号仍具有第二占空比; 并且当输入信号小于零时，第一输出信号具有第一占空比，第二输出信号具有与输入信号变化的第四占空比。 第一和第二占空比非常小，但在尺寸上彼此相等，并且第一和第二输出信号之间的相位差可以在0至180度的范围内。

公开(公告)号：US20110074505A1

公开(公告)日：2011-03-31

申请号：US12641268

申请日：2009-12-17

申请人： Yu-Chen Chiang ,  Ming-Hung Chang ,  Fu-Yuan Chen

发明人： Yu-Chen Chiang ,  Ming-Hung Chang ,  Fu-Yuan Chen

IPC分类号： H03G3/20 ,  H03L5/00

CPC分类号： H03F3/45475 ,  H03F3/45937 ,  H03F2200/375 ,  H03F2203/45048 ,  H03F2203/45528 ,  H03F2203/45562 ,  H03F2203/45586 ,  H03F2203/45594 ,  H03F2203/45614 ,  H03F2203/45616

摘要： An offset voltage calibration method is disclosed, which is utilized for calibrating an offset voltage of an electronic device during a calibration period. The offset voltage calibration method includes generating a control signal according to an output signal of the electronic device, counting a count value and generating an offset indication signal according to the control signal, stopping counting and generating a final count value according to a compensation value after the output signal changes state, generating a calibration signal according to the count value or the final count value, and calibrating the offset voltage according to the offset indication signal and the calibration signal.

摘要翻译： 公开了一种偏移电压校准方法，其用于在校准周期期间校准电子设备的偏移电压。 偏移电压校准方法包括根据电子设备的输出信号产生控制信号，对计数值进行计数，并根据控制信号产生偏移指示信号，停止计数，并根据后面的补偿值产生最终计数值 输出信号改变状态，根据计数值或最终计数值产生校准信号，并根据偏移指示信号和校准信号校准偏移电压。

公开(公告)号：US08169209B2

公开(公告)日：2012-05-01

申请号：US12687094

申请日：2010-01-13

申请人： Fu-Yuan Chen ,  Yu-Chen Chiang ,  Ming-Hung Chang

发明人： Fu-Yuan Chen ,  Yu-Chen Chiang ,  Ming-Hung Chang

IPC分类号： G05F1/00

CPC分类号： H03F3/217

摘要： An output driving circuit capable of reducing EMI effect includes a non-overlapping signal generation unit for generating a first non-overlapping signal and a second non-overlapping signal according to an input signal, a pre-driver for generating a first pre-driving signal and a second pre-driving signal according to the first non-overlapping signal and the second non-overlapping signal, a high-side switch, a low-side switch, and a control unit for controlling the high-side switch or the low-side switch to be switched into a weak on state to reduce load inductive current effect for a load.

摘要翻译： 能够降低EMI效应的输出驱动电路包括用于根据输入信号产生第一非重叠信号和第二不重叠信号的非重叠信号产生单元，用于产生第一预驱动信号的预驱动器 以及根据第一非重叠信号和第二非重叠信号的第二预驱动信号，高侧开关，低侧开关和用于控制高侧开关或低端开关的控制单元， 侧开关切换为弱导通状态，以减轻负载的负载感应电流效应。

公开(公告)号：US07388426B2

公开(公告)日：2008-06-17

申请号：US11452894

申请日：2006-06-15

申请人： Ming-Hung Chang ,  Fu-Yuan Chen

发明人： Ming-Hung Chang ,  Fu-Yuan Chen

IPC分类号： H03F3/38

CPC分类号： H03F3/2173

摘要： In a control circuit and method for a high efficiency and low EMI switching amplifier, an input signal is compared with a reference signal to generate a comparison signal, and a control signal is generated in response to the comparison signal for a driver to generate an output signal. The output signal is fed back to control the slope of the reference signal in association with an initial level set for the reference signal to provide a minimum on-time period for the output signal. Alternatively, a reference value is provided to compare with the reference signal for setting a minimum on-time period for the output signal.

摘要翻译： 在用于高效率和低EMI开关放大器的控制电路和方法中，将输入信号与参考信号进行比较以产生比较信号，并且响应于驱动器的比较信号产生控制信号以产生输出 信号。 输出信号被反馈以与参考信号的初始电平相关联地控制参考信号的斜率，以为输出信号提供最小导通时间周期。 或者，提供参考值以与用于设置输出信号的最小导通时间周期的参考信号进行比较。

公开(公告)号：US20080129370A1

公开(公告)日：2008-06-05

申请号：US12007907

申请日：2008-01-17

申请人： Ming-Hung Chang ,  Fu-Yuan Chen

发明人： Ming-Hung Chang ,  Fu-Yuan Chen

IPC分类号： H03K17/687 ,  H03F3/38

CPC分类号： H03F3/2173 ,  H03F1/0205 ,  H03F1/34 ,  H03F2200/03 ,  H03F2200/114 ,  H03F2200/301 ,  H03F2200/351 ,  H03F2200/384 ,  H03F2200/391 ,  H03K17/6871

摘要： In a control circuit and method for a high efficiency and low EMI switching amplifier, an input signal is compared with a reference signal to generate a comparison signal, and a control signal is generated in response to the comparison signal for a driver to generate an output signal. The output signal is fed back to control the slope of the reference signal in association with an initial level set for the reference signal to provide a minimum on-time period for the output signal. Alternatively, a reference value is provided to compare with the reference signal for setting a minimum on-time period for the output signal.

公开(公告)号：US07345540B2

公开(公告)日：2008-03-18

申请号：US11163158

申请日：2005-10-07

申请人： Ming-Hung Chang ,  Fu-Yuan Chen

发明人： Ming-Hung Chang ,  Fu-Yuan Chen

IPC分类号： H03F1/04

CPC分类号： H03F3/217 ,  H03F1/32 ,  H03F1/34 ,  H03F2200/144 ,  H03F2200/351

摘要： An amplifier circuit includes a feedback loop; a former stage amplifier unit coupled to an input node of the amplifier circuit and the feedback loop for amplifying the difference between an input signal received from the input node and an output signal which comes back through the feedback loop, and outputting a first output signal; a compensating amplifier unit coupled to the former stage amplifier unit for amplifying the first output signal and outputting a second output signal; and an output stage amplifier unit coupled to the compensating amplifier unit and the feedback loop for outputting a third output signal according to the second output signal.

摘要翻译： 放大器电路包括反馈回路; 耦合到放大器电路的输入节点的前级放大器单元和用于放大从输入节点接收的输入信号与通过反馈回路返回的输出信号之间的差异的反馈回路，并输出第一输出信号; 耦合到前级放大器单元的补偿放大器单元，用于放大第一输出信号并输出​​第二输出信号; 以及输出级放大器单元，其耦合到所述补偿放大器单元和所述反馈回路，用于根据所述第二输出信号输出第三输出信号。