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Title: An 87% peak efficiency, 37W, class H audio amplifier with GaN output stage
Authors: Nardi, Utomo
Siek, Liter
Yap, Heng Goh
Disney, Don
Selvaraj, Lawrence
Peng, Lulu
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Nardi, U., Siek, L., Yap, H. G., Disney, D., Selvaraj, L. & Peng, L. (2018). An 87% peak efficiency, 37W, class H audio amplifier with GaN output stage. 2018 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC).
Abstract: 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 paper. The design consumes 706.3mW quiescent power and can deliver up to 37W peak output power to the load of 32Ω with the peak power efficiency of 87%. This design achieves the lowest THD+N ratio of -70.17dB.
ISBN: 978-1-5386-7657-8
DOI: 10.1109/NORCHIP.2018.8573508
Rights: © 2018 Institute of Electrical and Electronics Engineers (IEEE). All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Conference Papers

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