DC/DC converter converts DC to DC of different voltages, which operates in a switching state with high energy conversion efficiency. DC/DC converters have various circuit topologies. Converters that generate a voltage lower than the supply voltage are called "buck converters"; converters that generate a voltage higher than the supply voltage are called "boost converters". DC-DC converters are used in a wide range of technical products in a variety of fields, and are in high demand in fast-growing industries such as automotive, consumer electronics, and industrial machinery and vehicles.