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A High-Switching-Frequency Flyback Converter in Resonant Mode
The demand of miniaturization of power systems has accelerated the research on high-switching-frequency power converters. A flyback converter in resonant mode that features low switching losses, less transformer losses, and low switching noise at high switching frequency is investigated in this pape...
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Published in: | IEEE transactions on power electronics 2017-11, Vol.32 (11), p.8582-8592 |
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container_title | IEEE transactions on power electronics |
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creator | Jianting Li van Horck, Frank B. M. Daniel, Bobby J. Bergveld, Henk Jan |
description | The demand of miniaturization of power systems has accelerated the research on high-switching-frequency power converters. A flyback converter in resonant mode that features low switching losses, less transformer losses, and low switching noise at high switching frequency is investigated in this paper as an alternative to a conventional quasi-resonant (QR) flyback topology to increase power density. In order to find a compromise between magnet size, electromagnetic interference (EMI), and efficiency, the concept utilizes the resonant behavior between transformer leakage inductance and snubber capacitor to achieve near-zero-voltage switching at both turn-on and turn-off of the primary switch, low core loss due to a continuous transformer magnetizing current, and reduced EMI due to low di/dt and dv/dt values. Meanwhile, the concept uses the regenerative snubber to recycle the transformer leakage energy with two snubber diodes and one snubber capacitor. The proposed concept has been validated on a 340-kHz 65-W prototype. Compared to the conventional QR flyback converter operating at the same switching frequency, the proposed concept has 2% efficiency improvement and better EMI performance. |
doi_str_mv | 10.1109/TPEL.2016.2642044 |
format | article |
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Meanwhile, the concept uses the regenerative snubber to recycle the transformer leakage energy with two snubber diodes and one snubber capacitor. The proposed concept has been validated on a 340-kHz 65-W prototype. Compared to the conventional QR flyback converter operating at the same switching frequency, the proposed concept has 2% efficiency improvement and better EMI performance.</description><identifier>ISSN: 0885-8993</identifier><identifier>EISSN: 1941-0107</identifier><identifier>DOI: 10.1109/TPEL.2016.2642044</identifier><identifier>CODEN: ITPEE8</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Capacitors ; Core loss ; Diode snubbers ; Electromagnetic interference ; Electronics ; Flyback ; high switching frequency ; Inductance ; Leakage ; Miniaturization ; Power converters ; regenerative snubber ; resonant power conversion ; Silicon ; Snubbers ; Switches ; Switching ; Switching frequency ; Switching loss ; Topology ; Transformers ; Windings</subject><ispartof>IEEE transactions on power electronics, 2017-11, Vol.32 (11), p.8582-8592</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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M.</creatorcontrib><creatorcontrib>Daniel, Bobby J.</creatorcontrib><creatorcontrib>Bergveld, Henk Jan</creatorcontrib><title>A High-Switching-Frequency Flyback Converter in Resonant Mode</title><title>IEEE transactions on power electronics</title><addtitle>TPEL</addtitle><description>The demand of miniaturization of power systems has accelerated the research on high-switching-frequency power converters. A flyback converter in resonant mode that features low switching losses, less transformer losses, and low switching noise at high switching frequency is investigated in this paper as an alternative to a conventional quasi-resonant (QR) flyback topology to increase power density. In order to find a compromise between magnet size, electromagnetic interference (EMI), and efficiency, the concept utilizes the resonant behavior between transformer leakage inductance and snubber capacitor to achieve near-zero-voltage switching at both turn-on and turn-off of the primary switch, low core loss due to a continuous transformer magnetizing current, and reduced EMI due to low di/dt and dv/dt values. Meanwhile, the concept uses the regenerative snubber to recycle the transformer leakage energy with two snubber diodes and one snubber capacitor. The proposed concept has been validated on a 340-kHz 65-W prototype. Compared to the conventional QR flyback converter operating at the same switching frequency, the proposed concept has 2% efficiency improvement and better EMI performance.</description><subject>Capacitors</subject><subject>Core loss</subject><subject>Diode snubbers</subject><subject>Electromagnetic interference</subject><subject>Electronics</subject><subject>Flyback</subject><subject>high switching frequency</subject><subject>Inductance</subject><subject>Leakage</subject><subject>Miniaturization</subject><subject>Power converters</subject><subject>regenerative snubber</subject><subject>resonant power conversion</subject><subject>Silicon</subject><subject>Snubbers</subject><subject>Switches</subject><subject>Switching</subject><subject>Switching frequency</subject><subject>Switching loss</subject><subject>Topology</subject><subject>Transformers</subject><subject>Windings</subject><issn>0885-8993</issn><issn>1941-0107</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNo9kE1PAjEQhhujiYj-AONlE8_FmX5s24MHQkBMMBrFc1O6BRaxi91Fwr93CcTTzOF535k8hNwi9BDBPEzfhpMeA8x7LBcMhDgjHTQCKSCoc9IBrSXVxvBLclXXKwAUErBDHvvZuFws6ceubPyyjAs6SuFnG6LfZ6P1fub8Vzao4m9ITUhZGbP3UFfRxSZ7qYpwTS7mbl2Hm9Psks_RcDoY08nr0_OgP6GeS9NQ6cG7woCccYc8GKcZ-tzIQoByELieazbzhUAlIQeNXLcLINNCBOYU8i65P_ZuUtU-Vzd2VW1TbE9ahkqIXBg0LYVHyqeqrlOY200qv13aWwR7sGQPluzBkj1ZajN3x0wZQvjnlTIMUfA_5Hlgng</recordid><startdate>201711</startdate><enddate>201711</enddate><creator>Jianting Li</creator><creator>van Horck, Frank B. 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M.</au><au>Daniel, Bobby J.</au><au>Bergveld, Henk Jan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A High-Switching-Frequency Flyback Converter in Resonant Mode</atitle><jtitle>IEEE transactions on power electronics</jtitle><stitle>TPEL</stitle><date>2017-11</date><risdate>2017</risdate><volume>32</volume><issue>11</issue><spage>8582</spage><epage>8592</epage><pages>8582-8592</pages><issn>0885-8993</issn><eissn>1941-0107</eissn><coden>ITPEE8</coden><abstract>The demand of miniaturization of power systems has accelerated the research on high-switching-frequency power converters. A flyback converter in resonant mode that features low switching losses, less transformer losses, and low switching noise at high switching frequency is investigated in this paper as an alternative to a conventional quasi-resonant (QR) flyback topology to increase power density. In order to find a compromise between magnet size, electromagnetic interference (EMI), and efficiency, the concept utilizes the resonant behavior between transformer leakage inductance and snubber capacitor to achieve near-zero-voltage switching at both turn-on and turn-off of the primary switch, low core loss due to a continuous transformer magnetizing current, and reduced EMI due to low di/dt and dv/dt values. Meanwhile, the concept uses the regenerative snubber to recycle the transformer leakage energy with two snubber diodes and one snubber capacitor. The proposed concept has been validated on a 340-kHz 65-W prototype. Compared to the conventional QR flyback converter operating at the same switching frequency, the proposed concept has 2% efficiency improvement and better EMI performance.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TPEL.2016.2642044</doi><tpages>11</tpages></addata></record> |
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subjects | Capacitors Core loss Diode snubbers Electromagnetic interference Electronics Flyback high switching frequency Inductance Leakage Miniaturization Power converters regenerative snubber resonant power conversion Silicon Snubbers Switches Switching Switching frequency Switching loss Topology Transformers Windings |
title | A High-Switching-Frequency Flyback Converter in Resonant Mode |
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