Determination of cross regulation in multioutput resonant converters

The determination of the cross-regulation characteristics in multioutput resonant converters is examined. The steady-state cross-regulation characteristics are derived using the state-plane techniques, illustrated by the example of a two-output clamped series resonant converter with clamped capacitor voltage. This technique can be applied to any multioutput resonant converter, thus it can serve as an important design tool and a criterion for selecting the optimal topology. The intuition gained from the analysis can be used to reduce the cross regulation in the multioutput power supplies. The theoretical results are verified by simulations and experimental measurements.<>