Patent ID: 7825725
Filing Date: 2010-11-02
Classification: H03F

Abstract:
1. A class D amplifier in which first and second output signals, as binary signals, are generated from an input signal, to drive a load connected across first and second output terminals, said class D amplifier comprising: a pulse generating circuit that generates a pulse width modulated first pulse signal from said input signal, an inverted signal of said first output signal, and said second output signal; a differential pulse generating circuit that receives said first pulse signal and that generates a second pulse signal by inverting a low level and a high level of said first pulse signal and shifting a resulting pulse signal by a half period of said first pulse signal; a first pulse amplifier that receives said first pulse signal to generate said first output signal to deliver the generated first output signal to said first output terminal; and a second pulse amplifier that receives said second pulse signal to generate said second output signal to deliver the generated second output signal to said second output terminal.