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A Single Chip 1 W CMOS Audio Power Amplifier with Pseudo Buffer Analog and Class D Switching Mixed Mode for Mobile Application
Ji-Yeoul RYOO Gyu-Hyeong CHO
Publication
IEICE TRANSACTIONS on Electronics
Vol.E88-C
No.9
pp.1886-1892 Publication Date: 2005/09/01 Online ISSN:
DOI: 10.1093/ietele/e88-c.9.1886 Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Electronic Circuits Keyword: analog, switching, audio power amplifier, reverse recovery current, on-chip,
Full Text: PDF(2.3MB)>>
Summary:
A single chip analog and class D switching mixed mode audio power amplifier using 0.35 µm CMOS process is presented in this paper. It has on-chip power MOSFET's and adopts a novel reverse recovery current free gate control that can reduce EMI noise and current stress of the power MOSFET's. It shows about 0.1% THD at 1 kHz and up to 87% efficiency at 4 Ω BTL at 3.3 V single power supply.
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