Switching regulator based on a high-voltage gain DC-DC converter with non-pulsating input/output currents

In recent years, new technological advances are requiring the use of direct current (DC)-DC switching converters with higher conversion ratios between input and output voltages. Additionally, the desirable characteristics of the converters are non-pulsating input and output currents as well as a reduced voltage stress on the switching devices. In this work, a control strategy is proposed for the high-voltage gain converter to regulate the output voltage. The steady-state operating conditions are discussed as well as the bilinear switching, non-linear averaged, and linear averaged models. The transfer functions of variables to be used for control purposes are analysed too. Experimental results for a 300W switching regulator with 97% conversion efficiency are given to validate the controller design procedure.