Common-mode Stable Multilevel Output Stage with EMI Reduction Feedback Loop for Class-D audio Amplifier. - Naoaki Nishimura; Atsushi Matamura; Preston Birdsong; Shaolong Liu; Abhishek Bandyopadhyay; Mariana T. Markova; Rajeev Morajkar (VLSI Technology and Circuits, 2022)