A motor driving device comprising: a rectifier to rectify input AC power; and a converter to convert the power rectified by the rectifier into DC power, wherein the converter comprises an interleaved converter comprising a first converter and a second converter configured for operating in an interleaved manner, characterized in that: the first converter of the interleaved converter comprises a first boost converter, and a first resonator comprising a passive element connected to the first boost converter, to perform resonation, wherein: the first boost converter comprises a first inductor (L1a), a first diode (D1a) connected to the first inductor, and a first switching element (S1a); and the first resonator comprises: a first resonating diode, a second resonating diode, and a first resonating inductor, which are connected in order and in series between both ends of the rectifier, a second resonating inductor connected between the first inductor and the first switching element of the first boost converter, and a first resonating capacitor (Cra) connected between a node between the first resonating diode and the second resonating diode, and a node between the second resonating inductor and the first switching element. a rectifier to rectify input AC power; and a converter to convert the power rectified by the rectifier into DC power, the first converter of the interleaved converter comprises a first boost converter, and a first resonator comprising a passive element connected to the first boost converter, to perform resonation, wherein: the first boost converter comprises a first inductor (L1a), a first diode (D1a) connected to the first inductor, and a first switching element (S1a); and the first resonator comprises: a first resonating diode, a second resonating diode, and a first resonating inductor, which are connected in order and in series between both ends of the rectifier, a second resonating inductor connected between the first inductor and the first switching element of the first boost converter, and a first resonating capacitor (Cra) connected between a node between the first resonating diode and the second resonating diode, and a node between the second resonating inductor and the first switching element. the first boost converter comprises a first inductor (L1a), a first diode (D1a) connected to the first inductor, and a first switching element (S1a); and the first resonator comprises: a first resonating diode, a second resonating diode, and a first resonating inductor, which are connected in order and in series between both ends of the rectifier, a second resonating inductor connected between the first inductor and the first switching element of the first boost converter, and a first resonating capacitor (Cra) connected between a node between the first resonating diode and the second resonating diode, and a node between the second resonating inductor and the first switching element. a first resonating diode, a second resonating diode, and a first resonating inductor, which are connected in order and in series between both ends of the rectifier, a second resonating inductor connected between the first inductor and the first switching element of the first boost converter, and a first resonating capacitor (Cra) connected between a node between the first resonating diode and the second resonating diode, and a node between the second resonating inductor and the first switching element.