High Boost DC-DC Converter: HB-LDC Converter

Abstract

A new type of DC-DC converter has been devised: the Hybrid Boost Inductor-Diode-Capacitor (HB-LDC) converter. A novel switching structure, a diode, a capacitor and a switch were added into an elementary additional circuit, to construct the HB-LDC converter. The proposed switching structure that carries out the step-up function is composed of three inductors and six diodes. The HB-LDC converter depends mainly on charging and discharging of the inductors and capacitors to realize the step-up function. The continuous-conduction mode (CCM) operation for the HB-LDC converter is analyzed. When the HB-LDC converter works in CCM, the voltage gain is only related to the duty cycle. Theoretical analysis shows that the HB-LDC converter is characterized by high voltage gain, low switching stress, and low inductance ripple. The theoretical analysis was verified by the construction of a working device.