A high-efficiency self-oscillating Class D amplifier in 0.35-um CMOS

Abstract

Consider the structure of a self-oscillation power amplifier as a power line driver. Self-oscillation power amplifier was improved by the Class-D power amplifier. The traditional Class-D switching power amplifier is vulnerable to distortion limitation. Due to the non-linear continuous time nature of the self-oscillation, it possesses peculiar properties that enable the construction of a highly linear, high-efficiency line driver. In the thesis which has efficiency up to 53%, SFDR and THD are 53.6 dB and 52.8 dB respectively. A prototype has been fabricated in a 0.35-um CMOS process to the proposed circuit.