A Filterless Digital Audio Class D Amplifier Based on Grow Left Double Edge Puls

A filterless digital audio class-D amplifier (CDA) based on grow-Left double-edge (GLDE) pulse width modulation (PWM) is proposed in this paper. It consists of a high performance fully-digital uniform-sampling PWM (UPWM) modulator and a bridge-tied-load (BTL) power stage. Due to adopt the ternary PW