Open AccessStudy and analysis of a DC–DC soft‐switched buck converter
Author(s) -
Alavi Peyman,
Babaei Ebrahim,
Mohseni Parham,
Marzang Vafa
Publication year - 2020
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2019.0431
Subject(s) - buck converter , electrical engineering , computer science , engineering , voltage
In this study, a soft‐switched buck converter is proposed and analysed. In this structure, by adding an auxiliary inductor and two auxiliary capacitors, zero‐voltage switching condition for switch's turn on and near to soft‐switching condition for switch's turn off are provided. Furthermore, the power diode turns off under zero‐current switching condition. As a result, switching losses and reverse recovery losses have been eliminated, and the proposed converter can provide high efficiencies. To prove the mentioned advantages, a 200 W laboratory prototype of the proposed converter is built and its results are investigated completely. On the basis of these results, the proposed converter can provide 96.1% experimental efficiency at 200 W output power, which proves the 96.78% theoretical efficiency. Also, in comparison results, it is shown that this converter not only provides higher efficiency in comparison with other structures, but also it has less components and simpler structure than other related buck converters.