A high step-up DC-DC converter based on integrated coupled inductor and switched capacitor

For a variety of renewable energy applications, large number of dc-dc converters can be used. Here a high step up dc-dc converter using a integrated coupled inductor and switched capacitor is proposed. The converter acheives high voltage gain with the help of an inductor which is coupled type and two voltage multiplier cells. When the switch is off the two capacitors are charged using the energy in the inductor which is coupled type, leading to an increase in the voltage gain. Recycling of the energy in the leakage inductance by the passive clamp circuit leads to decrease in the switching stresses.