Three-Output Flyback Converter with Synchronous Rectification for Improving Cross-Regulation and Efficiency
This paper proposes a single stage alternating current/direct current (AC/DC) flyback converter which contains three output windings with synchronous rectification (SR) function to achieve better cross-regulation and efficiency. Because the three output windings are stacked in a series structure and...
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doaj-5f73c5180700462b9d2dfaa3a3139e662021-02-10T00:06:08ZengMDPI AGElectronics2079-92922021-02-011043043010.3390/electronics10040430Three-Output Flyback Converter with Synchronous Rectification for Improving Cross-Regulation and EfficiencyChung-Ming Leng0Huang-Jen Chiu1Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10607, TaiwanDepartment of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10607, TaiwanThis paper proposes a single stage alternating current/direct current (AC/DC) flyback converter which contains three output windings with synchronous rectification (SR) function to achieve better cross-regulation and efficiency. Because the three output windings are stacked in a series structure and use synchronous rectification instead of diode rectification, the forward conduction loss of the diode can be eliminated, and the current of each winding can flow bilaterally. Therefore, the energy of leakage inductance can be dissipated through heavy load winding without transient overvoltage in light load winding. Compared with existing methods in the literature, the proposed converter can be realized by simple analog IC with fewer winding turns. Finally, under the extreme load imbalance condition, the cross-regulation is still within ±2.26%. The maximum efficiency of the proposed converter reaches 87%, which is about 3% higher than the conventional Schottky diode solution’s efficiency. The circuit structure and operation principle are described. A practical prototype and experiment results are implemented to verify the feasibility of the proposed converter.https://www.mdpi.com/2079-9292/10/4/430flybackcross-regulationsynchronous rectifiermulti-outputs |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chung-Ming Leng Huang-Jen Chiu |
spellingShingle |
Chung-Ming Leng Huang-Jen Chiu Three-Output Flyback Converter with Synchronous Rectification for Improving Cross-Regulation and Efficiency Electronics flyback cross-regulation synchronous rectifier multi-outputs |
author_facet |
Chung-Ming Leng Huang-Jen Chiu |
author_sort |
Chung-Ming Leng |
title |
Three-Output Flyback Converter with Synchronous Rectification for Improving Cross-Regulation and Efficiency |
title_short |
Three-Output Flyback Converter with Synchronous Rectification for Improving Cross-Regulation and Efficiency |
title_full |
Three-Output Flyback Converter with Synchronous Rectification for Improving Cross-Regulation and Efficiency |
title_fullStr |
Three-Output Flyback Converter with Synchronous Rectification for Improving Cross-Regulation and Efficiency |
title_full_unstemmed |
Three-Output Flyback Converter with Synchronous Rectification for Improving Cross-Regulation and Efficiency |
title_sort |
three-output flyback converter with synchronous rectification for improving cross-regulation and efficiency |
publisher |
MDPI AG |
series |
Electronics |
issn |
2079-9292 |
publishDate |
2021-02-01 |
description |
This paper proposes a single stage alternating current/direct current (AC/DC) flyback converter which contains three output windings with synchronous rectification (SR) function to achieve better cross-regulation and efficiency. Because the three output windings are stacked in a series structure and use synchronous rectification instead of diode rectification, the forward conduction loss of the diode can be eliminated, and the current of each winding can flow bilaterally. Therefore, the energy of leakage inductance can be dissipated through heavy load winding without transient overvoltage in light load winding. Compared with existing methods in the literature, the proposed converter can be realized by simple analog IC with fewer winding turns. Finally, under the extreme load imbalance condition, the cross-regulation is still within ±2.26%. The maximum efficiency of the proposed converter reaches 87%, which is about 3% higher than the conventional Schottky diode solution’s efficiency. The circuit structure and operation principle are described. A practical prototype and experiment results are implemented to verify the feasibility of the proposed converter. |
topic |
flyback cross-regulation synchronous rectifier multi-outputs |
url |
https://www.mdpi.com/2079-9292/10/4/430 |
work_keys_str_mv |
AT chungmingleng threeoutputflybackconverterwithsynchronousrectificationforimprovingcrossregulationandefficiency AT huangjenchiu threeoutputflybackconverterwithsynchronousrectificationforimprovingcrossregulationandefficiency |
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