An Adaptive Variable-Frequency Control With Constant Crossover Frequency Achieving Fast Transient Response for Wide-Operation-Range Flyback Converter
Flyback converters with universal serial bus power delivery (USB-PD) specification are widely used in low-power adapter application. The wide output voltage range operation of USB-PD makes the loop gain vary under different working conditions. To ensure stability in all working conditions, the loop...
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| Veröffentlicht in: | IEEE transactions on power electronics 2019-06, Vol.34 (6), p.5537-5548 |
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| container_title | IEEE transactions on power electronics |
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| creator | Cheng, Ching-Hsiang Chen, Ching-Jan Wang, Shinn-Shyong |
| description | Flyback converters with universal serial bus power delivery (USB-PD) specification are widely used in low-power adapter application. The wide output voltage range operation of USB-PD makes the loop gain vary under different working conditions. To ensure stability in all working conditions, the loop gain has to be compensated based on the worst case of control-to-output transfer function. However, in other conditions, the crossover frequencies of loop gain are sacrificed, resulting in poor transient responses. This paper proposes an adaptive variable-frequency peak current mode control with constant crossover frequency to mitigate the tradeoff between stability and transient response while possessing the variable frequency characteristic to improve light load efficiency. The adaptive control law is derived from the proposed small-signal model. Experimental and simulation results verify the analysis. The proposed control reduces the output voltage variation at load transient by 43% and 34% at 5 and 20 V output voltage, respectively. |
| doi_str_mv | 10.1109/TPEL.2018.2869156 |
| format | Article |
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The wide output voltage range operation of USB-PD makes the loop gain vary under different working conditions. To ensure stability in all working conditions, the loop gain has to be compensated based on the worst case of control-to-output transfer function. However, in other conditions, the crossover frequencies of loop gain are sacrificed, resulting in poor transient responses. This paper proposes an adaptive variable-frequency peak current mode control with constant crossover frequency to mitigate the tradeoff between stability and transient response while possessing the variable frequency characteristic to improve light load efficiency. The adaptive control law is derived from the proposed small-signal model. Experimental and simulation results verify the analysis. The proposed control reduces the output voltage variation at load transient by 43% and 34% at 5 and 20 V output voltage, respectively.</description><identifier>ISSN: 0885-8993</identifier><identifier>EISSN: 1941-0107</identifier><identifier>DOI: 10.1109/TPEL.2018.2869156</identifier><identifier>CODEN: ITPEE8</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Adapters ; Adaptive control ; Adaptive variable-frequency peak current mode (AVFPCM) control ; Computer simulation ; constant crossover frequency ; Control stability ; Control theory ; Converters ; Crossovers ; Data buses ; Electric potential ; Electronics ; flyback converter ; Frequency control ; Frequency conversion ; Stability analysis ; Switches ; Transfer functions ; Transient analysis ; Transient response ; Universal Serial Bus ; universal serial bus power delivery (USB-PD) ; Voltage control</subject><ispartof>IEEE transactions on power electronics, 2019-06, Vol.34 (6), p.5537-5548</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c293t-d58cd58dabe45e563ed82b982b0f7a2ff9129b96d1e73d63cb44c2232db276823</citedby><cites>FETCH-LOGICAL-c293t-d58cd58dabe45e563ed82b982b0f7a2ff9129b96d1e73d63cb44c2232db276823</cites><orcidid>0000-0002-2207-1286 ; 0000-0003-4696-0464</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/8457302$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,777,781,793,27905,27906,54739</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/8457302$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Cheng, Ching-Hsiang</creatorcontrib><creatorcontrib>Chen, Ching-Jan</creatorcontrib><creatorcontrib>Wang, Shinn-Shyong</creatorcontrib><title>An Adaptive Variable-Frequency Control With Constant Crossover Frequency Achieving Fast Transient Response for Wide-Operation-Range Flyback Converter</title><title>IEEE transactions on power electronics</title><addtitle>TPEL</addtitle><description>Flyback converters with universal serial bus power delivery (USB-PD) specification are widely used in low-power adapter application. The wide output voltage range operation of USB-PD makes the loop gain vary under different working conditions. To ensure stability in all working conditions, the loop gain has to be compensated based on the worst case of control-to-output transfer function. However, in other conditions, the crossover frequencies of loop gain are sacrificed, resulting in poor transient responses. This paper proposes an adaptive variable-frequency peak current mode control with constant crossover frequency to mitigate the tradeoff between stability and transient response while possessing the variable frequency characteristic to improve light load efficiency. The adaptive control law is derived from the proposed small-signal model. Experimental and simulation results verify the analysis. The proposed control reduces the output voltage variation at load transient by 43% and 34% at 5 and 20 V output voltage, respectively.</description><subject>Adapters</subject><subject>Adaptive control</subject><subject>Adaptive variable-frequency peak current mode (AVFPCM) control</subject><subject>Computer simulation</subject><subject>constant crossover frequency</subject><subject>Control stability</subject><subject>Control theory</subject><subject>Converters</subject><subject>Crossovers</subject><subject>Data buses</subject><subject>Electric potential</subject><subject>Electronics</subject><subject>flyback converter</subject><subject>Frequency control</subject><subject>Frequency conversion</subject><subject>Stability analysis</subject><subject>Switches</subject><subject>Transfer functions</subject><subject>Transient analysis</subject><subject>Transient response</subject><subject>Universal Serial Bus</subject><subject>universal serial bus power delivery (USB-PD)</subject><subject>Voltage control</subject><issn>0885-8993</issn><issn>1941-0107</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpFkF9LwzAUxYMoOKcfQHwJ-NyZP02bPI6xqTBQxtTHkra3W-ZMa5IN9kH8vqZs6MPlcuF3zuUchG4pGVFK1MPydTofMULliMlMUZGdoQFVKU0IJfk5GhApRSKV4pfoyvsNITQVhA7Qz9jica27YPaA37UzutxCMnPwvQNbHfCktcG1W_xhwro_fNA24IlrvW_34PA_Oa7WBvbGrvBM-4CXTltvIMIL8F0UAm5aF31qSF46cDqY1iYLbVeAZ9tDqavP3j96BnDX6KLRWw83pz1Eb7PpcvKUzF8enyfjeVIxxUNSC1nFqXUJqQCRcaglK1Uc0uSaNY2iTJUqqynkvM54VaZpxRhndcnyTDI-RPdH3861MYYPxabdORtfFoxRQXIuWB4peqSqPraDpuic-dLuUFBS9O0XfftF335xaj9q7o4aAwB_vExFzgnjv-eBg4U</recordid><startdate>20190601</startdate><enddate>20190601</enddate><creator>Cheng, Ching-Hsiang</creator><creator>Chen, Ching-Jan</creator><creator>Wang, Shinn-Shyong</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-2207-1286</orcidid><orcidid>https://orcid.org/0000-0003-4696-0464</orcidid></search><sort><creationdate>20190601</creationdate><title>An Adaptive Variable-Frequency Control With Constant Crossover Frequency Achieving Fast Transient Response for Wide-Operation-Range Flyback Converter</title><author>Cheng, Ching-Hsiang ; Chen, Ching-Jan ; Wang, Shinn-Shyong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c293t-d58cd58dabe45e563ed82b982b0f7a2ff9129b96d1e73d63cb44c2232db276823</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Adapters</topic><topic>Adaptive control</topic><topic>Adaptive variable-frequency peak current mode (AVFPCM) control</topic><topic>Computer simulation</topic><topic>constant crossover frequency</topic><topic>Control stability</topic><topic>Control theory</topic><topic>Converters</topic><topic>Crossovers</topic><topic>Data buses</topic><topic>Electric potential</topic><topic>Electronics</topic><topic>flyback converter</topic><topic>Frequency control</topic><topic>Frequency conversion</topic><topic>Stability analysis</topic><topic>Switches</topic><topic>Transfer functions</topic><topic>Transient analysis</topic><topic>Transient response</topic><topic>Universal Serial Bus</topic><topic>universal serial bus power delivery (USB-PD)</topic><topic>Voltage control</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cheng, Ching-Hsiang</creatorcontrib><creatorcontrib>Chen, Ching-Jan</creatorcontrib><creatorcontrib>Wang, Shinn-Shyong</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on power electronics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Cheng, Ching-Hsiang</au><au>Chen, Ching-Jan</au><au>Wang, Shinn-Shyong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An Adaptive Variable-Frequency Control With Constant Crossover Frequency Achieving Fast Transient Response for Wide-Operation-Range Flyback Converter</atitle><jtitle>IEEE transactions on power electronics</jtitle><stitle>TPEL</stitle><date>2019-06-01</date><risdate>2019</risdate><volume>34</volume><issue>6</issue><spage>5537</spage><epage>5548</epage><pages>5537-5548</pages><issn>0885-8993</issn><eissn>1941-0107</eissn><coden>ITPEE8</coden><abstract>Flyback converters with universal serial bus power delivery (USB-PD) specification are widely used in low-power adapter application. The wide output voltage range operation of USB-PD makes the loop gain vary under different working conditions. To ensure stability in all working conditions, the loop gain has to be compensated based on the worst case of control-to-output transfer function. However, in other conditions, the crossover frequencies of loop gain are sacrificed, resulting in poor transient responses. This paper proposes an adaptive variable-frequency peak current mode control with constant crossover frequency to mitigate the tradeoff between stability and transient response while possessing the variable frequency characteristic to improve light load efficiency. The adaptive control law is derived from the proposed small-signal model. Experimental and simulation results verify the analysis. The proposed control reduces the output voltage variation at load transient by 43% and 34% at 5 and 20 V output voltage, respectively.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TPEL.2018.2869156</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0002-2207-1286</orcidid><orcidid>https://orcid.org/0000-0003-4696-0464</orcidid></addata></record> |
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| issn | 0885-8993 1941-0107 |
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| source | IEEE Electronic Library (IEL) |
| subjects | Adapters Adaptive control Adaptive variable-frequency peak current mode (AVFPCM) control Computer simulation constant crossover frequency Control stability Control theory Converters Crossovers Data buses Electric potential Electronics flyback converter Frequency control Frequency conversion Stability analysis Switches Transfer functions Transient analysis Transient response Universal Serial Bus universal serial bus power delivery (USB-PD) Voltage control |
| title | An Adaptive Variable-Frequency Control With Constant Crossover Frequency Achieving Fast Transient Response for Wide-Operation-Range Flyback Converter |
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