Methods for designing a filterless class-D amplifier and driver are
described herein. In the exemplary embodiment, a feedback loop is used to
stabilize the filterless class-D amplifier. A pulse width modulated (PWM)
output signal is generated by adding a comparator input signal to a
comparative signal, and comparing the sum to a peak voltage, which can be
a peak value of the comparative signal. A limit of one PWM sample will be
generated half per period of the comparative signal, resulting in lower
dynamic switching noise and a decreased sensitivity to jitter noise than
conventional filterless class-D amplifiers.