Transfer Characteristics of a Current Mode Controlled ZVS Buck-Boost Converter which linked with a Buck Converter

Abstract

The development of zero-voltage switching (ZVS) technique has attracted for many industrial applications. We had presented a quasi resonant ZVS buck converter linked with a buck-boost component. The output voltage of the ZVS buck-boost component is had to be controlled by the maximum current in the switching devices. However the transfer function with the input which is the maximum current in the switching devices is not proposed.
In this paper, a transfer function at the ZVS buck-boost converter controlled by the maximum current in the switching devices is proposed. The transfer functions are expressed by the differential equation of the storage energy in the resonance reactor resonance capacitor and the smoothing capacitor.
The transfer function is conformed by the computer simulation and the experiment.