Patent ID: 7548110

Claim:
A power amplifier, comprising: a delta-sigma modulation module, receiving a differential-mode input signal, integrating and quantizing an error between the differential-mode input signal and an output signal, and generating a first mean signal and a second mean signal; a differential programmable dead-time control module, coupled to the delta-sigma modulation module, the differential programmable dead-time control module receiving the first mean signal and generating a first signal and a second signal corresponding to the first mean signal through logic calculation, and the differential programmable dead-time control module receiving the second mean signal and generating a third signal and a fourth signal corresponding to the second mean signal through logic calculation and the differential programmable dead-time control module adjusts dead-time corresponding to the first mean signal and the second mean signal respectively; and an output stage module, coupled to the differential programmable dead-time control module, the output stage module being controlled by the first signal, the second signal, the third signal, and the fourth signal to generate the output signal to drive a load.