公开(公告)号：US07023269B2

公开(公告)日：2006-04-04

申请号：US10935418

申请日：2004-09-08

申请人： Yongmin Meng ,  Longhai Ye ,  Yiu Cheung Brian Li

发明人： Yongmin Meng ,  Longhai Ye ,  Yiu Cheung Brian Li

IPC分类号： H03F3/38

CPC分类号： H03F3/217 ,  H03F1/02 ,  H03F1/0277 ,  H03F3/2173 ,  H03F3/38 ,  H03F3/72

摘要： An amplifier including a difference amplifier, said difference amplifier including a first output and a second output which are adapted for providing a PWM signal output to a load by signal difference between said first and said second outputs, said difference amplifier being adapted for operating in at least first and second alternative operating modes which are respectively characterised by first and second operating voltages, wherein during transition from one operating mode to another, the pulse area of the pulses of said first and second outputs of said difference amplifier are changed according to a pre-determined manner so that the pulse area of pulses of said first and second outputs at the end of said transitional mode is equivalent to the pulse area of the pulses of said first and second outputs immediately after the change of operating modes.

摘要翻译： 一种放大器，包括差分放大器，所述差分放大器包括第一输出和第二输出，其适于通过所述第一和所述第二输出之间的信号差来向负载输出PWM信号，所述差分放大器适于在 分别以第一和第二工作电压为特征的最少的第一和第二替代操作模式，其中在从一个操作模式转换到另一操作模式期间，所述差分放大器的所述第一和第二输出的脉冲的脉冲区域根据预先 使得在所述过渡模式结束时所述第一和第二输出的脉冲的脉冲面积等于在操作模式改变之后的所述第一和第二输出的脉冲的脉冲面积。

公开(公告)号：US20060049869A1

公开(公告)日：2006-03-09

申请号：US10935418

申请日：2004-09-08

申请人： Yongmin Meng ,  Longhai Ye ,  Yiu Li

发明人： Yongmin Meng ,  Longhai Ye ,  Yiu Li

IPC分类号： H03F3/38

CPC分类号： H03F3/217 ,  H03F1/02 ,  H03F1/0277 ,  H03F3/2173 ,  H03F3/38 ,  H03F3/72

摘要： An amplifier including a difference amplifier, said difference amplifier including a first output and a second output which are adapted for providing a PWM signal output to a load by signal difference between said first and said second outputs, said difference amplifier being adapted for operating in at least first and second alternative operating modes which are respectively characterised by first and second operating voltages, wherein during transition from one operating mode to another, the pulse area of the pulses of said first and second outputs of said difference amplifier are changed according to a pre-determined manner so that the pulse area of pulses of said first and second outputs at the end of said transitional mode is equivalent to the pulse area of the pulses of said first and second outputs immediately after the change of operating modes.

摘要翻译： 一种放大器，包括差分放大器，所述差分放大器包括第一输出和第二输出，其适于通过所述第一和所述第二输出之间的信号差来向负载输出PWM信号，所述差分放大器适于在 分别以第一和第二工作电压为特征的最少的第一和第二替代操作模式，其中在从一个操作模式转换到另一操作模式期间，所述差分放大器的所述第一和第二输出的脉冲的脉冲区域根据预先 使得在所述过渡模式结束时所述第一和第二输出的脉冲的脉冲面积等于在操作模式改变之后的所述第一和第二输出的脉冲的脉冲面积。