Abstract
It is necessary for converter design to analyze its operation modes completely. However series-resonant type DC-DC converter (LC type) is difficult to analyze because it has several operation modes. Especially a link transformer is modeled with its parasitic elements, it has been reported that it has more operation modes because L and/or C elements are added. This report analyzes the converter with the parasitics (LCC, and LLCC types) for its operation modes and the results are investigated to make clear its operation behaviors by a operation mode analysis software developed by one of the authors and by SPICE. This method and results are also useful for analysis of series resonant converters (LCC, LCL, LLCC types).
