Contents I. Introduction
High step-up DC-DC converters are employed in several areas, as for automotive applications, renewable systems, microgrid CC, micro inverters, etc. These converters are intended to raise the input voltage of the input source, usually low (less than 50 V), to a high voltage level (typically 400 V) [1]–[3]. This approach requires that the converters be able to achieve high voltage gain and good performance. Thus, the standard boost converter is not viable for this application, since it does not perform well when it requires high voltage gain owing to the high current and voltage stresses across the components [4]–[5]. On the other hand, the simplicity that the boost converter presents, allows different voltage-lifting techniques to be integrated to it.
