Large-signal transient response of regulated resonant converters

Large-signal transient responses of regulated resonant converters are investigated by analysis and experiment. The maximum peak values of the voltage stress on the semiconductor switch, reactor current and output voltage are obtained for the step-change of the line voltage and the load condition. As a result, a much higher voltage appears across the semiconductor switch for a larger variation of the line voltage compared with the steady state voltage. A comparison of large-signal transient responses clarifies that full-wave resonant converters have much higher voltage-stress on semiconductor switches compared with their half-wave counterparts, and that full-wave converters show a faster response of the output voltage than their half-wave counterparts