We present a design method for an asymmetric CLLC resonant converter based on the behavior in time-domain. Instead using simplified equations, a highly parallelized simulation workflow is used to collect a database with non-dimensionalized result data including the non-linear semiconductor output capacitances. An algorithm searches the database for valid resonant tank configurations for multiple operating points defined in forward and reverse operation, evaluating output power, soft switching, and frequency range. Finally, the capability of the proposed algorithm and database approach is validated for a bidirectional charger with 3.7kW output power with wide battery voltage range, verified by measurements.
