A design of a 10-W single-chip class D audio amplifier with very high efficiency using CMOS technology

A one-chip integrated circuit (IC) of a 10-W class-D audio power amplifier with very high efficiency using CMOS technology is presented. A mixture of a class D output stage and a bridge tied load (BTL) is the main topology of the proposed amplifier. The new 10-W IC audio power amplifier operates at...

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Bibliographic Details
Published inIEEE transactions on consumer electronics Vol. 45; no. 3; pp. 465 - 473
Main Authors Choi, Soo-chang, Lee, Jun-woo, Jin, Woo-kang, So, Jae-hwan, Kim, Suki
Format Journal Article
LanguageEnglish
Published IEEE 01.08.1999
Subjects
Amplifiers
Bridge circuits
Circuit topology
CMOS
CMOS integrated circuits
CMOS technology
Electronics
Harmonic distortion
High power amplifiers
High voltages
Integrated circuit technology
Integrated circuits
MOSFETs
Power amplifiers
Total harmonic distortion
Voltage
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Summary:A one-chip integrated circuit (IC) of a 10-W class-D audio power amplifier with very high efficiency using CMOS technology is presented. A mixture of a class D output stage and a bridge tied load (BTL) is the main topology of the proposed amplifier. The new 10-W IC audio power amplifier operates at 12 V with the efficiency of more than 90% and the total harmonic distortion (THD) of 0.1%. The amplifier is implemented in a 4-/spl mu/m double-metal, single-poly CMOS technology that provides with relatively high voltage (12 V) MOSFETs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0098-3063
1558-4127
DOI:10.1109/30.793526