公开(公告)号：US20080088371A1

公开(公告)日：2008-04-17

申请号：US11889419

申请日：2007-08-13

申请人： Seung-Bin You ,  Yong-JIn Cho

发明人： Seung-Bin You ,  Yong-JIn Cho

IPC分类号： H03F3/217

CPC分类号： H03F3/2171

摘要： A digital amplifier, a reference voltage generator for reducing a DC component of an amplified pulse width modulated signal of a digital amplifier, and a method of reducing a DC component of an amplified pulse width modulated signal applied to an input node of a load are described in this disclosure. The digital amplifier includes a pulse width modulation signal generator receiving an input signal and generating an amplified pulse width modulated signal, a filter filtering the amplified pulse width modulated signal and providing the filtered amplified pulse width modulated signal to an input node of a load, and a reference voltage generator providing a reference voltage to a reference node of the load to reduce a DC component of the filtered amplified pulse width modulated signal provided to the input node of the load.

摘要翻译： 描述数字放大器，用于减小数字放大器的放大的脉宽调制信号的DC分量的参考电压发生器以及减小施加到负载的输入节点的经放大的脉宽调制信号的DC分量的方法 在本公开中。 数字放大器包括接收输入信号并产生放大的脉宽调制信号的脉冲宽度调制信号发生器，对经放大的脉宽调制信号进行滤波的滤波器，并将滤波后的放大脉宽调制信号提供给负载的输入节点，以及 参考电压发生器，将参考电压提供给负载的参考节点，以减小提供给负载的输入节点的滤波后的放大脉宽调制信号的直流分量。