The present invention aims to provide a power converter with an arm including switching devices connected in parallel, realizing long lifespans of switching devices. An inverter includes an upper and a lower arm, and gate drive circuits each driving the corresponding arm according to a gate control signal Gup_s indicating ON/OFF periods. Each arm includes switching devices connected in parallel. Each gate drive circuit includes: a switching gate control circuit 230u bringing a switching device 210u into conduction at the beginning of the ON period and bringing the same out of conduction within the ON period; and a conduction gate control circuit 231u bringing switching devices 211u and 212u within a period from when the switching device 210u is brought into conduction until the same is brought out of conduction, wherein the switching device 210u has a lower parasitic capacitance than the switching devices 211u and the 212u.