An 87% peak efficiency, 37W, class H audio amplifier with GaN output stage
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...
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sg-ntu-dr.10356-1521122021-07-19T02:50:22Z An 87% peak efficiency, 37W, class H audio amplifier with GaN output stage Nardi, Utomo Siek, Liter Yap, Heng Goh Disney, Don Selvaraj, Lawrence Peng, Lulu School of Electrical and Electronic Engineering 2018 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC) Global Foundries VIRTUS, IC Design Centre of Excellence Engineering::Electrical and electronic engineering Audio Amplifier Class H Amplifier 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. We would like to acknowledge GlobalFoundries Inc for providing the chip fabrication and the back-end support for this project. We would also want to acknowledge Aaron Cai and Zhang Xiang for the fruitful discussions on class H amplifier and enhancement mode GaN transistors. 2021-07-19T02:50:21Z 2021-07-19T02:50:21Z 2018 Conference Paper 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). https://dx.doi.org/10.1109/NORCHIP.2018.8573508 978-1-5386-7657-8 https://hdl.handle.net/10356/152112 10.1109/NORCHIP.2018.8573508 en © 2018 Institute of Electrical and Electronics Engineers (IEEE). All rights reserved. |
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Engineering::Electrical and electronic engineering Audio Amplifier Class H Amplifier |
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Engineering::Electrical and electronic engineering Audio Amplifier Class H Amplifier Nardi, Utomo Siek, Liter Yap, Heng Goh Disney, Don Selvaraj, Lawrence Peng, Lulu An 87% peak efficiency, 37W, class H audio amplifier with GaN output stage |
| description |
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. |
| author2 |
School of Electrical and Electronic Engineering |
| author_facet |
School of Electrical and Electronic Engineering Nardi, Utomo Siek, Liter Yap, Heng Goh Disney, Don Selvaraj, Lawrence Peng, Lulu |
| format |
Conference or Workshop Item |
| author |
Nardi, Utomo Siek, Liter Yap, Heng Goh Disney, Don Selvaraj, Lawrence Peng, Lulu |
| author_sort |
Nardi, Utomo |
| title |
An 87% peak efficiency, 37W, class H audio amplifier with GaN output stage |
| title_short |
An 87% peak efficiency, 37W, class H audio amplifier with GaN output stage |
| title_full |
An 87% peak efficiency, 37W, class H audio amplifier with GaN output stage |
| title_fullStr |
An 87% peak efficiency, 37W, class H audio amplifier with GaN output stage |
| title_full_unstemmed |
An 87% peak efficiency, 37W, class H audio amplifier with GaN output stage |
| title_sort |
87% peak efficiency, 37w, class h audio amplifier with gan output stage |
| publishDate |
2021 |
| url |
https://hdl.handle.net/10356/152112 |
| _version_ |
1707050435760619520 |