A High-Efficiency Wide-Input-Voltage Range Switched Capacitor Point-of-Load DC-DC Converter
The traditional inductor-based buck converter has been the default design for switched-mode voltage regulators for decades. Switched capacitor (SC) dc-dc converters, on the other hand, have traditionally been used in low-power (
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| Veröffentlicht in: | IEEE transactions on power electronics 2013-09, Vol.28 (9), p.4335-4341 |
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| container_title | IEEE transactions on power electronics |
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| creator | Ng, Vincent W. Sanders, Seth R. |
| description | The traditional inductor-based buck converter has been the default design for switched-mode voltage regulators for decades. Switched capacitor (SC) dc-dc converters, on the other hand, have traditionally been used in low-power ( |
| doi_str_mv | 10.1109/TPEL.2012.2224887 |
| format | Article |
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Switched capacitor (SC) dc-dc converters, on the other hand, have traditionally been used in low-power (<;10 mW) and low conversion ratio (<;4:1) applications where neither regulation nor efficiency is critical. This study encompasses the complete successful design, fabrication, and test of a CMOS-based SC dc-dc converter, addressing the ubiquitous 12-1.5 V boardmounted point-of-load application. In particular, the circuit developed in this study attains higher efficiency (92% peak, and >80% over a load range of 5 mA to 1 A) than surveyed competitive buck converters, while requiring less board area and less costly passive components. The topology and controller enable a wide input range of 7.5-13.5 V. Controls based on feedback and feedforward provide tight regulation under worst case line and load step conditions. This study shows that the SC converter can outperform the buck converter, and thus, the scope of SC converter application can and should be expanded.</description><identifier>ISSN: 0885-8993</identifier><identifier>EISSN: 1941-0107</identifier><identifier>DOI: 10.1109/TPEL.2012.2224887</identifier><identifier>CODEN: ITPEE8</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Capacitors ; Clocks ; CMOS ; DC-DC power converters ; Electric currents ; Electrical equipment ; Feedback ; switched capacitor circuits ; switched-mode power supply ; Switches ; Switching frequency ; Voltage control ; Voltage measurement</subject><ispartof>IEEE transactions on power electronics, 2013-09, Vol.28 (9), p.4335-4341</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Sep 2013</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c293t-8b3f55e6e51088ca9eba91cb88fa5af828e1f6c63a3a1dd5d3117aa14bc061513</citedby><cites>FETCH-LOGICAL-c293t-8b3f55e6e51088ca9eba91cb88fa5af828e1f6c63a3a1dd5d3117aa14bc061513</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/6334460$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/6334460$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Ng, Vincent W.</creatorcontrib><creatorcontrib>Sanders, Seth R.</creatorcontrib><title>A High-Efficiency Wide-Input-Voltage Range Switched Capacitor Point-of-Load DC-DC Converter</title><title>IEEE transactions on power electronics</title><addtitle>TPEL</addtitle><description>The traditional inductor-based buck converter has been the default design for switched-mode voltage regulators for decades. Switched capacitor (SC) dc-dc converters, on the other hand, have traditionally been used in low-power (<;10 mW) and low conversion ratio (<;4:1) applications where neither regulation nor efficiency is critical. This study encompasses the complete successful design, fabrication, and test of a CMOS-based SC dc-dc converter, addressing the ubiquitous 12-1.5 V boardmounted point-of-load application. In particular, the circuit developed in this study attains higher efficiency (92% peak, and >80% over a load range of 5 mA to 1 A) than surveyed competitive buck converters, while requiring less board area and less costly passive components. The topology and controller enable a wide input range of 7.5-13.5 V. Controls based on feedback and feedforward provide tight regulation under worst case line and load step conditions. This study shows that the SC converter can outperform the buck converter, and thus, the scope of SC converter application can and should be expanded.</description><subject>Capacitors</subject><subject>Clocks</subject><subject>CMOS</subject><subject>DC-DC power converters</subject><subject>Electric currents</subject><subject>Electrical equipment</subject><subject>Feedback</subject><subject>switched capacitor circuits</subject><subject>switched-mode power supply</subject><subject>Switches</subject><subject>Switching frequency</subject><subject>Voltage control</subject><subject>Voltage measurement</subject><issn>0885-8993</issn><issn>1941-0107</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kMFOAjEQhhujiYg-gPGyiedip90u3SNZUEhIJIp68NB0uy2U4HbtFg1v7xKIc5i5fP_M5EPoFsgAgOQPy8VkPqAE6IBSmgoxPEM9yFPABMjwHPWIEByLPGeX6KptN4RAygn00OcombrVGk-sddqZWu-TD1cZPKubXcTvfhvVyiQvqu7666-Lem2qpFCN0i76kCy8qyP2Fs-9qpJxgcdFUvj6x4RowjW6sGrbmpvT7KO3x8mymOL589OsGM2xpjmLWJTMcm4yw6H7UqvclCoHXQphFVdWUGHAZjpjiimoKl4xgKFSkJaaZMCB9dH9cW8T_PfOtFFu_C7U3UkJVHRFgWUdBUdKB9-2wVjZBPelwl4CkQeH8uBQHhzKk8Muc3fMOGPMP58xlqYZYX8Tfmw3</recordid><startdate>20130901</startdate><enddate>20130901</enddate><creator>Ng, Vincent W.</creator><creator>Sanders, Seth R.</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></search><sort><creationdate>20130901</creationdate><title>A High-Efficiency Wide-Input-Voltage Range Switched Capacitor Point-of-Load DC-DC Converter</title><author>Ng, Vincent W. ; Sanders, Seth R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c293t-8b3f55e6e51088ca9eba91cb88fa5af828e1f6c63a3a1dd5d3117aa14bc061513</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Capacitors</topic><topic>Clocks</topic><topic>CMOS</topic><topic>DC-DC power converters</topic><topic>Electric currents</topic><topic>Electrical equipment</topic><topic>Feedback</topic><topic>switched capacitor circuits</topic><topic>switched-mode power supply</topic><topic>Switches</topic><topic>Switching frequency</topic><topic>Voltage control</topic><topic>Voltage measurement</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ng, Vincent W.</creatorcontrib><creatorcontrib>Sanders, Seth R.</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>Ng, Vincent W.</au><au>Sanders, Seth R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A High-Efficiency Wide-Input-Voltage Range Switched Capacitor Point-of-Load DC-DC Converter</atitle><jtitle>IEEE transactions on power electronics</jtitle><stitle>TPEL</stitle><date>2013-09-01</date><risdate>2013</risdate><volume>28</volume><issue>9</issue><spage>4335</spage><epage>4341</epage><pages>4335-4341</pages><issn>0885-8993</issn><eissn>1941-0107</eissn><coden>ITPEE8</coden><abstract>The traditional inductor-based buck converter has been the default design for switched-mode voltage regulators for decades. Switched capacitor (SC) dc-dc converters, on the other hand, have traditionally been used in low-power (<;10 mW) and low conversion ratio (<;4:1) applications where neither regulation nor efficiency is critical. This study encompasses the complete successful design, fabrication, and test of a CMOS-based SC dc-dc converter, addressing the ubiquitous 12-1.5 V boardmounted point-of-load application. In particular, the circuit developed in this study attains higher efficiency (92% peak, and >80% over a load range of 5 mA to 1 A) than surveyed competitive buck converters, while requiring less board area and less costly passive components. The topology and controller enable a wide input range of 7.5-13.5 V. Controls based on feedback and feedforward provide tight regulation under worst case line and load step conditions. This study shows that the SC converter can outperform the buck converter, and thus, the scope of SC converter application can and should be expanded.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TPEL.2012.2224887</doi><tpages>7</tpages></addata></record> |
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| ispartof | IEEE transactions on power electronics, 2013-09, Vol.28 (9), p.4335-4341 |
| issn | 0885-8993 1941-0107 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Capacitors Clocks CMOS DC-DC power converters Electric currents Electrical equipment Feedback switched capacitor circuits switched-mode power supply Switches Switching frequency Voltage control Voltage measurement |
| title | A High-Efficiency Wide-Input-Voltage Range Switched Capacitor Point-of-Load DC-DC Converter |
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