Unified steady-state description of phase-shift-controlled ZVS-operated series-resonant and non-resonant single-active-bridge converters

A steady-state representation for zero-voltage-switching series-resonant converter topologies using phase-shift control is presented. The model uses directly accessible system parameters. It is further shown how the mathematical formulation converges into the well-known equations for the non-resonant single-active bridge converter, considering it an asymptotic case of the ZVS-operated series-resonant converter with infinite series capacitance. The analysis results can be applied to circuit variants with 2-Level full-bridge or 3-Level half-bridge converters. ZVS operating ranges for different resonant tank layouts are illustrated and discussed.