Abstract: Recently, the LLC resonant converter has drawn
a lot of attention due to its advantages over the conventional
series resonant converter and parallel resonant converter:
narrow frequency variation over wide load and input variation
and Zero Voltage Switching (ZVS) of the switches for entire
load range. This paper presents an analysis and reviews
practical design considerations for the LLC-type resonant
converter. It includes designing the transformer and selecting
the components. The step-by-step design procedure explained
with a design example will help engineers design the LLC
resonant converter easily