Improved Error Correction Methods for Filterless Digital Class D Audio Power Amplifier Based on FCLNF
Aiming at correcting the error caused by the nonlinear and power supply noise of the bridge-tied-load (BTL) power stage of the filterless digital class D power amplifier, an error correction method was proposed based on feedforward power supply noise suppression (FFPSNS) and first-order closed loop...
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| Veröffentlicht in: | Mathematical problems in engineering 2020, Vol.2020 (2020), p.1-9 |
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| creator | Li, Li Sun, Yan-jing Li, Hong-jie |
| description | Aiming at correcting the error caused by the nonlinear and power supply noise of the bridge-tied-load (BTL) power stage of the filterless digital class D power amplifier, an error correction method was proposed based on feedforward power supply noise suppression (FFPSNS) and first-order closed loop negative feedback (FCLNF) techniques. This method constructed the first-order LCLNF loop for the power stage and further reduced the impact of the power supply noise on the power amplifier output by using FFPSNS technology to introduce the power supply noise into the feedback loop at the same time. The 0.35 μm CMOS process is used for analysis and comparison in Cadence. Cadence simulation results indicate that PSRR at the power supply noise frequency of 200 Hz is improved with 36.02 dB. The power supply induced intermodulation distortion (PS-IMD) components are decreased by approximately 15.57 dB and the signal-to-noise ratio (SNR) of the power amplifier is increased by 17 dB. The total harmonic distortion + noise (THD + N) of the power amplifier is reduced to 0.02% by FCLNF + FFPSNS. |
| doi_str_mv | 10.1155/2020/5914062 |
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This method constructed the first-order LCLNF loop for the power stage and further reduced the impact of the power supply noise on the power amplifier output by using FFPSNS technology to introduce the power supply noise into the feedback loop at the same time. The 0.35 μm CMOS process is used for analysis and comparison in Cadence. Cadence simulation results indicate that PSRR at the power supply noise frequency of 200 Hz is improved with 36.02 dB. The power supply induced intermodulation distortion (PS-IMD) components are decreased by approximately 15.57 dB and the signal-to-noise ratio (SNR) of the power amplifier is increased by 17 dB. The total harmonic distortion + noise (THD + N) of the power amplifier is reduced to 0.02% by FCLNF + FFPSNS.</description><identifier>ISSN: 1024-123X</identifier><identifier>EISSN: 1563-5147</identifier><identifier>DOI: 10.1155/2020/5914062</identifier><language>eng</language><publisher>Cairo, Egypt: Hindawi Publishing Corporation</publisher><subject>Closed loops ; CMOS ; Digital switching ; Efficiency ; Engineering ; Error correction ; Error correction & detection ; Feedback loops ; Harmonic distortion ; Intermodulation distortion ; Negative feedback ; Noise levels ; Power amplifiers ; Power supply ; Receivers & amplifiers ; Signal to noise ratio ; Video equipment</subject><ispartof>Mathematical problems in engineering, 2020, Vol.2020 (2020), p.1-9</ispartof><rights>Copyright © 2020 Li Li et al.</rights><rights>Copyright © 2020 Li Li et al. This is an open access article distributed under the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. http://creativecommons.org/licenses/by/4.0</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c360t-f4736140b1b0247c8fe9a034dbf14179059d03e5b1e586eb48843a1ab15f9e313</citedby><cites>FETCH-LOGICAL-c360t-f4736140b1b0247c8fe9a034dbf14179059d03e5b1e586eb48843a1ab15f9e313</cites><orcidid>0000-0001-5055-7438</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,4024,27923,27924,27925</link.rule.ids></links><search><contributor>Lee, Sanghyuk</contributor><contributor>Sanghyuk Lee</contributor><creatorcontrib>Li, Li</creatorcontrib><creatorcontrib>Sun, Yan-jing</creatorcontrib><creatorcontrib>Li, Hong-jie</creatorcontrib><title>Improved Error Correction Methods for Filterless Digital Class D Audio Power Amplifier Based on FCLNF</title><title>Mathematical problems in engineering</title><description>Aiming at correcting the error caused by the nonlinear and power supply noise of the bridge-tied-load (BTL) power stage of the filterless digital class D power amplifier, an error correction method was proposed based on feedforward power supply noise suppression (FFPSNS) and first-order closed loop negative feedback (FCLNF) techniques. This method constructed the first-order LCLNF loop for the power stage and further reduced the impact of the power supply noise on the power amplifier output by using FFPSNS technology to introduce the power supply noise into the feedback loop at the same time. The 0.35 μm CMOS process is used for analysis and comparison in Cadence. Cadence simulation results indicate that PSRR at the power supply noise frequency of 200 Hz is improved with 36.02 dB. The power supply induced intermodulation distortion (PS-IMD) components are decreased by approximately 15.57 dB and the signal-to-noise ratio (SNR) of the power amplifier is increased by 17 dB. The total harmonic distortion + noise (THD + N) of the power amplifier is reduced to 0.02% by FCLNF + FFPSNS.</description><subject>Closed loops</subject><subject>CMOS</subject><subject>Digital switching</subject><subject>Efficiency</subject><subject>Engineering</subject><subject>Error correction</subject><subject>Error correction & detection</subject><subject>Feedback loops</subject><subject>Harmonic distortion</subject><subject>Intermodulation distortion</subject><subject>Negative feedback</subject><subject>Noise levels</subject><subject>Power amplifiers</subject><subject>Power supply</subject><subject>Receivers & amplifiers</subject><subject>Signal to noise ratio</subject><subject>Video equipment</subject><issn>1024-123X</issn><issn>1563-5147</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>RHX</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNqFkMtLAzEQxoMoWKs3zxLwqGszm2Qfx7p2VaiPg4K3Jbs7sSnbpiZbi_-9KS14FAbmwY9vZj5CzoHdAEg5ilnMRjIHwZL4gAxAJjySINLDULNYRBDzj2Ny4v2csRgkZAOCj4uVs9_Y0olz1tHCOodNb-ySPmE_s62nOoxL0_XoOvSe3plP06uOFp3adnS8bo2lr3aDjo4Xq85oE6pb5YNmUCmL6XN5So606jye7fOQvJeTt-Ihmr7cPxbjadTwhPWRFilPwvU11OHctMk05opx0dYaBKQ5k3nLOMoaUGYJ1iLLBFegapA6Rw58SC53uuGnrzX6vprbtVuGlVUseMJFxlkcqOsd1TjrvUNdrZxZKPdTAau2RlZbI6u9kQG_2uEzs2zVxvxHX-xoDAxq9UdDnvAQv-A_eoA</recordid><startdate>2020</startdate><enddate>2020</enddate><creator>Li, Li</creator><creator>Sun, Yan-jing</creator><creator>Li, Hong-jie</creator><general>Hindawi Publishing Corporation</general><general>Hindawi</general><general>Hindawi Limited</general><scope>ADJCN</scope><scope>AHFXO</scope><scope>RHU</scope><scope>RHW</scope><scope>RHX</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>CWDGH</scope><scope>DWQXO</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>JQ2</scope><scope>K7-</scope><scope>KR7</scope><scope>L6V</scope><scope>M7S</scope><scope>P5Z</scope><scope>P62</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><orcidid>https://orcid.org/0000-0001-5055-7438</orcidid></search><sort><creationdate>2020</creationdate><title>Improved Error Correction Methods for Filterless Digital Class D Audio Power Amplifier Based on FCLNF</title><author>Li, Li ; Sun, Yan-jing ; Li, Hong-jie</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c360t-f4736140b1b0247c8fe9a034dbf14179059d03e5b1e586eb48843a1ab15f9e313</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Closed loops</topic><topic>CMOS</topic><topic>Digital switching</topic><topic>Efficiency</topic><topic>Engineering</topic><topic>Error correction</topic><topic>Error correction & detection</topic><topic>Feedback loops</topic><topic>Harmonic distortion</topic><topic>Intermodulation distortion</topic><topic>Negative feedback</topic><topic>Noise levels</topic><topic>Power amplifiers</topic><topic>Power supply</topic><topic>Receivers & amplifiers</topic><topic>Signal to noise ratio</topic><topic>Video equipment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Li</creatorcontrib><creatorcontrib>Sun, Yan-jing</creatorcontrib><creatorcontrib>Li, Hong-jie</creatorcontrib><collection>الدوريات العلمية والإحصائية - e-Marefa Academic and Statistical Periodicals</collection><collection>معرفة - المحتوى العربي الأكاديمي المتكامل - e-Marefa Academic Complete</collection><collection>Hindawi Publishing Complete</collection><collection>Hindawi Publishing Subscription Journals</collection><collection>Hindawi Publishing Open Access Journals</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>Middle East & Africa Database</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Computer Science Collection</collection><collection>Computer Science Database</collection><collection>Civil Engineering Abstracts</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Access via ProQuest (Open Access)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><jtitle>Mathematical problems in engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Li</au><au>Sun, Yan-jing</au><au>Li, Hong-jie</au><au>Lee, Sanghyuk</au><au>Sanghyuk Lee</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Improved Error Correction Methods for Filterless Digital Class D Audio Power Amplifier Based on FCLNF</atitle><jtitle>Mathematical problems in engineering</jtitle><date>2020</date><risdate>2020</risdate><volume>2020</volume><issue>2020</issue><spage>1</spage><epage>9</epage><pages>1-9</pages><issn>1024-123X</issn><eissn>1563-5147</eissn><abstract>Aiming at correcting the error caused by the nonlinear and power supply noise of the bridge-tied-load (BTL) power stage of the filterless digital class D power amplifier, an error correction method was proposed based on feedforward power supply noise suppression (FFPSNS) and first-order closed loop negative feedback (FCLNF) techniques. This method constructed the first-order LCLNF loop for the power stage and further reduced the impact of the power supply noise on the power amplifier output by using FFPSNS technology to introduce the power supply noise into the feedback loop at the same time. The 0.35 μm CMOS process is used for analysis and comparison in Cadence. Cadence simulation results indicate that PSRR at the power supply noise frequency of 200 Hz is improved with 36.02 dB. The power supply induced intermodulation distortion (PS-IMD) components are decreased by approximately 15.57 dB and the signal-to-noise ratio (SNR) of the power amplifier is increased by 17 dB. The total harmonic distortion + noise (THD + N) of the power amplifier is reduced to 0.02% by FCLNF + FFPSNS.</abstract><cop>Cairo, Egypt</cop><pub>Hindawi Publishing Corporation</pub><doi>10.1155/2020/5914062</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0001-5055-7438</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Closed loops CMOS Digital switching Efficiency Engineering Error correction Error correction & detection Feedback loops Harmonic distortion Intermodulation distortion Negative feedback Noise levels Power amplifiers Power supply Receivers & amplifiers Signal to noise ratio Video equipment |
| title | Improved Error Correction Methods for Filterless Digital Class D Audio Power Amplifier Based on FCLNF |
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