An 87% peak efficiency, 37W, class H audio amplifier with GaN output stage

• Main Authors: Nardi, Utomo, Siek, Liter, Yap, Heng Goh, Disney, Don, Selvaraj, Lawrence, Peng, Lulu
• Other Authors: School of Electrical and Electronic Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2021
• Subjects: Engineering::Electrical and electronic engineering; Audio Amplifier; Class H Amplifier
• Online Access: https://hdl.handle.net/10356/152112
• Institution: Nanyang Technological University

This paper presents a novel high output power class H audio amplifier design with GaN transistors output stage. The design is implemented in 0.18-μm BCD process. Several design techniques to drive the GaN output stage and to improve the efficiency of the class H amplifier are introduced in this pape...