Charge pump capacitor based high voltage gain DC-DC step-up converter

This paper aims at designing a high voltage-gain step-up converter based on charge pump concept. Without any circuitry design complexity, this novel step up converter can generate almost threefold output voltage relative to its input through charging two charge pump capacitors. In order to verify the effectiveness of the proposed converter, simulations are carried out where the efficiency curve shows high value for a wide range of output power. Furthermore, a minimum switching loss is guaranteed by using an inductor in the circuit which assists in zero current switching (ZCS). The results presented in this paper imply the proposed circuit´s potential in photovoltaic (PV) power generation system as well as fuel cell applications where step up voltage is required.