Switching device for electric vehicle and method of controlling the switching device

Provided are a switching device for an electric vehicle and a method of controlling the switching device. The switching device includes a signal selection part, an inverter, and a controller. The signal selection part receives a first or second switching signal, and selects the first or second switching signal according to a preselected operation mode of the electric vehicle to output the selected switching signal. The inverter performs a direct current/alternating current conversion process on power according to the switching signal output from the signal selection part, and outputs the power. The controller senses an operation mode selection signal for the electric vehicle, and generates a control signal according to the preselected operation mode such that the signal selection part selects the first or second switching signal.