An Automotive 12 V-to-1.2 V Integrated Switched-Capacitor DC-DC Converter for Improved Load Transient Response
This letter presents a 12 V-to-1.2 V switched-capacitor dc-dc converter, which has a voltage conversion ratio of 1/10 with an input voltage of 12 V, for automotive applications. The power stage comprises an 8-phase ladder converter and a 16-phase 3-to-1 converter. All power switches are designed usi...
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| Veröffentlicht in: | IEEE transactions on power electronics 2023-10, Vol.38 (10), p.1-4 |
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| creator | Park, Inho Kim, Hyunjin Park, Taehyeong Jeong, Junwon Kim, Chulwoo |
| description | This letter presents a 12 V-to-1.2 V switched-capacitor dc-dc converter, which has a voltage conversion ratio of 1/10 with an input voltage of 12 V, for automotive applications. The power stage comprises an 8-phase ladder converter and a 16-phase 3-to-1 converter. All power switches are designed using 5-V isolated CMOS transistors. To improve the load transient response, the bias current for the charge pump of the 3-to-1 converter is adjusted via a dynamic amplifier. The charge pump for the ladder converter is assisted by the feedback loop of the 3-to-1 converter so that it responds fast to the light-to-heavy load transition. The proposed phase-shedding control reduces the overshoot when the load current increases. The proposed work is fabricated in a 180-nm BCD process. For a load step of 60 mA, the light-to-heavy and heavy-to-light responses are improved by 47.28% and 52.50%, respectively. The maximum end-to-end efficiency is measured as 57.80%. |
| doi_str_mv | 10.1109/TPEL.2023.3292276 |
| format | Article |
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The power stage comprises an 8-phase ladder converter and a 16-phase 3-to-1 converter. All power switches are designed using 5-V isolated CMOS transistors. To improve the load transient response, the bias current for the charge pump of the 3-to-1 converter is adjusted via a dynamic amplifier. The charge pump for the ladder converter is assisted by the feedback loop of the 3-to-1 converter so that it responds fast to the light-to-heavy load transition. The proposed phase-shedding control reduces the overshoot when the load current increases. The proposed work is fabricated in a 180-nm BCD process. For a load step of 60 mA, the light-to-heavy and heavy-to-light responses are improved by 47.28% and 52.50%, respectively. The maximum end-to-end efficiency is measured as 57.80%.</description><identifier>ISSN: 0885-8993</identifier><identifier>EISSN: 1941-0107</identifier><identifier>DOI: 10.1109/TPEL.2023.3292276</identifier><identifier>CODEN: ITPEE8</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Capacitors ; charge pump ; Charge pumps ; CMOS ; Control systems ; Control theory ; Conversion ratio ; dc–dc converter ; Electric potential ; Feedback loop ; Feedback loops ; load transient response ; power management ; Switched capacitor ; Switches ; Transient response ; Voltage ; Voltage control ; Voltage converters (DC to DC) ; Voltage-controlled oscillators</subject><ispartof>IEEE transactions on power electronics, 2023-10, Vol.38 (10), p.1-4</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2023</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c161t-e9fb7cd86c9569464f2c84b6b506431df844a3afcb79b08c3d0b37257a869a5b3</cites><orcidid>0000-0003-4379-7905 ; 0000-0003-3411-3997 ; 0000-0001-7999-3305 ; 0000-0003-2067-0557 ; 0000-0003-4059-597X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/10172229$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>315,781,785,797,27929,27930,54763</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/10172229$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Park, Inho</creatorcontrib><creatorcontrib>Kim, Hyunjin</creatorcontrib><creatorcontrib>Park, Taehyeong</creatorcontrib><creatorcontrib>Jeong, Junwon</creatorcontrib><creatorcontrib>Kim, Chulwoo</creatorcontrib><title>An Automotive 12 V-to-1.2 V Integrated Switched-Capacitor DC-DC Converter for Improved Load Transient Response</title><title>IEEE transactions on power electronics</title><addtitle>TPEL</addtitle><description>This letter presents a 12 V-to-1.2 V switched-capacitor dc-dc converter, which has a voltage conversion ratio of 1/10 with an input voltage of 12 V, for automotive applications. The power stage comprises an 8-phase ladder converter and a 16-phase 3-to-1 converter. All power switches are designed using 5-V isolated CMOS transistors. To improve the load transient response, the bias current for the charge pump of the 3-to-1 converter is adjusted via a dynamic amplifier. The charge pump for the ladder converter is assisted by the feedback loop of the 3-to-1 converter so that it responds fast to the light-to-heavy load transition. The proposed phase-shedding control reduces the overshoot when the load current increases. The proposed work is fabricated in a 180-nm BCD process. For a load step of 60 mA, the light-to-heavy and heavy-to-light responses are improved by 47.28% and 52.50%, respectively. The maximum end-to-end efficiency is measured as 57.80%.</description><subject>Capacitors</subject><subject>charge pump</subject><subject>Charge pumps</subject><subject>CMOS</subject><subject>Control systems</subject><subject>Control theory</subject><subject>Conversion ratio</subject><subject>dc–dc converter</subject><subject>Electric potential</subject><subject>Feedback loop</subject><subject>Feedback loops</subject><subject>load transient response</subject><subject>power management</subject><subject>Switched capacitor</subject><subject>Switches</subject><subject>Transient response</subject><subject>Voltage</subject><subject>Voltage control</subject><subject>Voltage converters (DC to DC)</subject><subject>Voltage-controlled oscillators</subject><issn>0885-8993</issn><issn>1941-0107</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpNkM9LwzAUgIMoOKd_gOAh4Dk1L2nT5Di6qYOCotNrSdNUO1xTk2zif2_HdvD0Ho_v_foQugaaAFB1t3pelAmjjCecKcZycYImoFIgFGh-iiZUyoxIpfg5ughhTSmkGYUJ6mc9nm2j27jY7SwGht9JdASSMcHLPtoPr6Nt8OtPF82nbUihB2266DyeF2Re4ML1O-uj9bgda8vN4N1u5EunG7zyug-d7SN-sWFwfbCX6KzVX8FeHeMUvd0vVsUjKZ8elsWsJAYERGJVW-emkcKoTKhUpC0zMq1FnVGRcmhamaaa69bUuaqpNLyhNc9ZlmsplM5qPkW3h7njOd9bG2K1dlvfjysrJsX4e5YBHyk4UMa7ELxtq8F3G-1_K6DVXmu111rttVZHrWPPzaGns9b-4yFnjCn-Bws8clU</recordid><startdate>20231001</startdate><enddate>20231001</enddate><creator>Park, Inho</creator><creator>Kim, Hyunjin</creator><creator>Park, Taehyeong</creator><creator>Jeong, Junwon</creator><creator>Kim, Chulwoo</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/0000-0003-4379-7905</orcidid><orcidid>https://orcid.org/0000-0003-3411-3997</orcidid><orcidid>https://orcid.org/0000-0001-7999-3305</orcidid><orcidid>https://orcid.org/0000-0003-2067-0557</orcidid><orcidid>https://orcid.org/0000-0003-4059-597X</orcidid></search><sort><creationdate>20231001</creationdate><title>An Automotive 12 V-to-1.2 V Integrated Switched-Capacitor DC-DC Converter for Improved Load Transient Response</title><author>Park, Inho ; Kim, Hyunjin ; Park, Taehyeong ; Jeong, Junwon ; Kim, Chulwoo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c161t-e9fb7cd86c9569464f2c84b6b506431df844a3afcb79b08c3d0b37257a869a5b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Capacitors</topic><topic>charge pump</topic><topic>Charge pumps</topic><topic>CMOS</topic><topic>Control systems</topic><topic>Control theory</topic><topic>Conversion ratio</topic><topic>dc–dc converter</topic><topic>Electric potential</topic><topic>Feedback loop</topic><topic>Feedback loops</topic><topic>load transient response</topic><topic>power management</topic><topic>Switched capacitor</topic><topic>Switches</topic><topic>Transient response</topic><topic>Voltage</topic><topic>Voltage control</topic><topic>Voltage converters (DC to DC)</topic><topic>Voltage-controlled oscillators</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Park, Inho</creatorcontrib><creatorcontrib>Kim, Hyunjin</creatorcontrib><creatorcontrib>Park, Taehyeong</creatorcontrib><creatorcontrib>Jeong, Junwon</creatorcontrib><creatorcontrib>Kim, Chulwoo</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>Park, Inho</au><au>Kim, Hyunjin</au><au>Park, Taehyeong</au><au>Jeong, Junwon</au><au>Kim, Chulwoo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An Automotive 12 V-to-1.2 V Integrated Switched-Capacitor DC-DC Converter for Improved Load Transient Response</atitle><jtitle>IEEE transactions on power electronics</jtitle><stitle>TPEL</stitle><date>2023-10-01</date><risdate>2023</risdate><volume>38</volume><issue>10</issue><spage>1</spage><epage>4</epage><pages>1-4</pages><issn>0885-8993</issn><eissn>1941-0107</eissn><coden>ITPEE8</coden><abstract>This letter presents a 12 V-to-1.2 V switched-capacitor dc-dc converter, which has a voltage conversion ratio of 1/10 with an input voltage of 12 V, for automotive applications. The power stage comprises an 8-phase ladder converter and a 16-phase 3-to-1 converter. All power switches are designed using 5-V isolated CMOS transistors. To improve the load transient response, the bias current for the charge pump of the 3-to-1 converter is adjusted via a dynamic amplifier. The charge pump for the ladder converter is assisted by the feedback loop of the 3-to-1 converter so that it responds fast to the light-to-heavy load transition. The proposed phase-shedding control reduces the overshoot when the load current increases. The proposed work is fabricated in a 180-nm BCD process. For a load step of 60 mA, the light-to-heavy and heavy-to-light responses are improved by 47.28% and 52.50%, respectively. 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| source | IEEE Electronic Library (IEL) |
| subjects | Capacitors charge pump Charge pumps CMOS Control systems Control theory Conversion ratio dc–dc converter Electric potential Feedback loop Feedback loops load transient response power management Switched capacitor Switches Transient response Voltage Voltage control Voltage converters (DC to DC) Voltage-controlled oscillators |
| title | An Automotive 12 V-to-1.2 V Integrated Switched-Capacitor DC-DC Converter for Improved Load Transient Response |
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