ANALYSIS AND DESIGN OF A PARALLEL RESONANT CONVERTER INCLUDING THE

A high frequency link dc/dc parallel resonant converter operating above resonance is analysed including the effect of high-frequency transformer using state-space approadi. Steady-state solutions are derived and are used to obtain the design curves. A method of obtaining optimum operating point under certain constraints is developed and is used to present a simple design procedure. The analysis shows that the inclusion of a high frequency transformer results in the introduction of a new mode of operation in between the two general steady-state modes. Experimental results obtained with a MOSFET based PRC for three different transformer turns ratios are presented to support the theory.