A drive circuit of a power device, including a set-side level shift circuit that receives a set signal and generates a level-shifted set signal, a reset-side level shift circuit that receives a reset signal and generates a level-shifted reset signal, a control circuit that is connected to the set-side level shift circuit and the reset-side level shift circuit, and that outputs a drive signal, a level of the drive signal changing between a first logic level for turning off the power device based on the level-shifted reset signal and a second logic level for turning on the power device based on the level-shifted set signal, and an ensuring circuit that ensures, based on the drive signal, that the control circuit controls to turn on the power device responsive to the level-shifted set signal, and to turn off the power device responsive to the level-shifted reset signal.