| Abstract |
High frequency power conversion and substantial reduction of the switching losses are more and more often achieved with resonant converters. But, even with a single switch, there are many possible topologies and a proper choice requires careful analysis. To guide this analysis the concept of resonant switch is used and even generalized (twenty different switches are listed). By regrouping them according to various criterions (commutation mechanism, duality,...), a structured study of these resonant switches is achieved. Using these switches in the well-known buck converter, the authors show up the most important characteristics of each group of switches: working limits, current and voltage constraints, voltage conversion ratio,... Attractive topologies are finally selected and more deeply studied. |
