Patent ID: 7446603

Claim:
A Class D audio amplifier comprising: a differential error amplifier generating a first error signal and a second error signal, wherein said first error signal is a function of first input signal, first output signal, second input signal and second output signal, and wherein said second error signal is a function of second input signal, second output signal, first input signal and first output signal; a waveform generator generating a first waveform and a second waveform, wherein said second waveform is at a predetermined phase difference to said first waveform; a pulse modulation circuit generating first pulse signal and second pulse signal, wherein said first pulse signal is a function of said first error signal and said first waveform, and wherein said second pulse signal is a function of said second error signal and said second waveform; a first driver and output stage generating said first output signal as a function of said first pulse signal; a second driver and output stage generating said second output signal as a function of said second pulse signal.