DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Kwang-Chan | ko |
dc.contributor.author | Chae, Chang-Seok | ko |
dc.contributor.author | Jeon, Jin-Yong | ko |
dc.contributor.author | Lee, Kang-Ho | ko |
dc.contributor.author | Cho, Gyu-Hyeong | ko |
dc.date.accessioned | 2013-03-11T08:58:40Z | - |
dc.date.available | 2013-03-11T08:58:40Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2010-06 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, v.57, no.6, pp.1122 - 1133 | - |
dc.identifier.issn | 1549-8328 | - |
dc.identifier.uri | http://hdl.handle.net/10203/98862 | - |
dc.description.abstract | A new Class-K* audio amplifier with high-power efficiency and high fidelity is integrated in a 0.35-mu m CMOS process. It proposes a new topology connected Class-D amplifier with fast-switching charge-dump (FSCD) amplifier in parallel. The integration of the amplifier requires neither analog buffer amplifier nor a complex compensation circuit needed in hybrid audio amplifier (Class-K). The FSCD amplifier composed of comparators and switches works at a high-switching frequency in order to absorb the distortion caused by Class-D amplifier switching. Thus, this assists the audio amplifier to have good linearity under switching operation. With the proposed topology, the audio amplifier has a flat frequency response with -3-dB bandwidth of 60 KHz and is capable of delivering up to 257 mW into 4.1-Omega load with maximum efficiency of 81%. A typical total harmonic distortion plus noise (THD + N) is less than 0.1% at the power level over 25 mW within the audio frequency range (20 Hz-20 kHz), and the minimum THD + N is 0.025% with the audio input frequency of 1 kHz at the output power of 114 mW. | - |
dc.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.subject | DESIGN | - |
dc.title | A High-Performance Fast Switching Charge Dump Assisted Class-K* Audio Amplifier | - |
dc.type | Article | - |
dc.identifier.wosid | 000281783800002 | - |
dc.identifier.scopusid | 2-s2.0-77953480772 | - |
dc.type.rims | ART | - |
dc.citation.volume | 57 | - |
dc.citation.issue | 6 | - |
dc.citation.beginningpage | 1122 | - |
dc.citation.endingpage | 1133 | - |
dc.citation.publicationname | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | - |
dc.identifier.doi | 10.1109/TCSI.2009.2028644 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Cho, Gyu-Hyeong | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Audio amplifier | - |
dc.subject.keywordAuthor | Class-K | - |
dc.subject.keywordAuthor | Class-AB | - |
dc.subject.keywordAuthor | Class-D | - |
dc.subject.keywordAuthor | efficiency | - |
dc.subject.keywordAuthor | fidelity | - |
dc.subject.keywordAuthor | Pulse-Width-Modulation (PWM) | - |
dc.subject.keywordAuthor | total harmonic distortion (THD) and CMOS | - |
dc.subject.keywordPlus | DESIGN | - |
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