PROJECT TITLE :

Embedded Single-Inductor Bipolar-Output DC–DC Converter in Class-D Amplifier for Low Common Noise

ABSTRACT:

This paper proposes a high efficiency category-D amplifier (CDA) with embedded single-inductor bipolar output (SIBO) power module. The characteristics of SIBO converter's bipolar outputs not solely suppress equivalent common-mode noise however conjointly take away many giant external bulky elements in typical boost offer CDA systems. Since bipolar outputs within the SIBO give independent driving capability, CDA is capable of operating in both single-ended and bridge-tide load configurations. Furthermore, the proposed dynamic voltage boosting technique adjusts the SIBO output voltage level per the CDA's output level with five% power efficiency improvement. Peak total harmonic distortion and noise performance is 0.012%. Peak power efficiency of SIBO and CDA is 89% and 93.2%, respectively.