Double Quadratic Buck Converter

In this paper, a new non-insulated DC-DC converter called Double Quadratic Buck Converter is proposed. This new converter has the advantages of high gain ratio near half range of duty cycle compared to the conventional Buck Converter. The stress voltage over the switches is reduced to half of the value compared to the conventional Quadratic Buck Converter. The topological symmetry simplifies the theoretical analysis of the converter. A complete theoretical analysis is made. The converter operation stages with the respective waveforms are explained. Static gain, critical inductance and boundary conduction mode are equated in order to obtain the external behavior curve of the converter. Besides the static model will be presented in this paper the dynamic model of the converter and the control of input current and of output voltage.