Digital correction of PWM switching amplifiers

  title={Digital correction of PWM switching amplifiers},
  author={Pallab Midya and Bill Roeckner and Stefan Bergstedt},
  journal={IEEE Power Electronics Letters},
Pulsewidth modulated (PWM) signals for driving a switching audio amplifier can be synthesized in the digital domain with extremely high linearity and precision. However, nonidealities associated with the power stage degrade output performance. A method to digitally correct for these nonidealities, resulting in very low total harmonic distortion (THD) and high signal-to-noise ratio (SNR) performance, is presented. This method also provides excellent rejection of power supply noise which is… CONTINUE READING
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