Architectural and performance comparison among a base LLC resonant converter circuit model and two improved variants

This paper presents two improved LLC resonant converter topologies that enhances the functional parameters of a base LLC resonant converter circuit model. The first improved converter circuit model maintains the hardware topological layout of the base converter circuit model, but replaces the two MOSFETs of the base converter with a pair of more energy efficient type MOSFETs. The architectural assembly of the second proposed improved converter model maintains the hardware topological layout of the base converter circuit model and the first improved converter circuit model, but substitutes the Operational Amplifiers used by the previous two convert models with class AB amplifiers. It has been observed, through multiple simulation measurements using Multisim 14 design environment, that the first improved converter circuit model generates the highest output voltage value, while the second improved converter circuit model has the highest efficiency out of all three converter circuit models.