A washing machine comprising: a washing tub; a motor to rotate the washing tub; and a driving unit to drive the motor by an operation section of the motor, wherein the driving unit comprises: an inverter to convert predetermined DC power into AC power having a predetermined frequency, and to output the AC power to the motor; an output current detection unit to detect output current (io) flowing in the motor, and an inverter controller to control the inverter in response to the output current, wherein the inverter includes three pairs of switching elements, each pair including an upper-arm switching element (Sa, Sb, Sc) and a lower-arm switching element (S'a, S'b, S'c), wherein during a laundry-amount sensing section, the washing tub rotates at a first rotation speed, wherein during a first eccentricity sensing section (Tm) after the laundry-amount sensing section, the washing tub rotates at a second rotation speed higher than the first rotation speed, wherein during a first dehydration section (Tn) after the first eccentricity sensing section (Tm), the washing tub rotates at a third rotation speed higher than the second rotation speed, wherein during a second eccentricity sensing section (To) after the first dehydration section (Tn), the washing tub rotates at the second rotation speed lower than the third rotation speed, wherein the driving unit is configured to drive the motor using a pulse width modulation scheme, to mix a three-phase PWM scheme and a two-phase PWM scheme in a common operation mode, and to drive the motor using the mixed PWM scheme, wherein the motor is driven based on the three-phase PWM scheme in the laundry-amount sensing section, the first eccentricity sensing section (Tm), and the second eccentricity sensing section (To), wherein the motor is driven based on the two-phase PWM scheme in the first dehydration section (Tn), wherein in the three-phase PWM scheme, three pairs of switching elements (Sa, Sb, Sc, S'a, S'b, S'c) repeat turn-on and turn-off operations, and wherein in the two-phase PWM scheme, upper-arm switching elements (Sa, Sb) and lower-arm switching elements (S'a, S'b) of two pairs among three pairs of switching elements (Sa, Sb, Sc, S'a, S'b, S'c) repeat turn-on and turn-off operations, and one of an upper-arm switching element (Sc) or a lower-arm switching element (S'c) in the remaining one pair among three pairs of switching elements (Sa, Sb, Sc, S'a, S'b, S'c) stays in a turn-on state and the other one of the upper-arm switching element (Sc) or the lower-arm switching element (S'c) in the remaining one pair stays in a turn-off state. a washing tub; a motor to rotate the washing tub; and a driving unit to drive the motor by an operation section of the motor, wherein the driving unit comprises: an inverter to convert predetermined DC power into AC power having a predetermined frequency, and to output the AC power to the motor; an output current detection unit to detect output current (io) flowing in the motor, and an inverter controller to control the inverter in response to the output current, an inverter to convert predetermined DC power into AC power having a predetermined frequency, and to output the AC power to the motor; an output current detection unit to detect output current (io) flowing in the motor, and an inverter controller to control the inverter in response to the output current, wherein the inverter includes three pairs of switching elements, each pair including an upper-arm switching element (Sa, Sb, Sc) and a lower-arm switching element (S'a, S'b, S'c), wherein during a laundry-amount sensing section, the washing tub rotates at a first rotation speed, wherein during a first eccentricity sensing section (Tm) after the laundry-amount sensing section, the washing tub rotates at a second rotation speed higher than the first rotation speed, wherein during a first dehydration section (Tn) after the first eccentricity sensing section (Tm), the washing tub rotates at a third rotation speed higher than the second rotation speed, wherein during a second eccentricity sensing section (To) after the first dehydration section (Tn), the washing tub rotates at the second rotation speed lower than the third rotation speed, wherein the driving unit is configured to drive the motor using a pulse width modulation scheme, to mix a three-phase PWM scheme and a two-phase PWM scheme in a common operation mode, and to drive the motor using the mixed PWM scheme, wherein the motor is driven based on the three-phase PWM scheme in the laundry-amount sensing section, the first eccentricity sensing section (Tm), and the second eccentricity sensing section (To), wherein the motor is driven based on the two-phase PWM scheme in the first dehydration section (Tn), wherein in the three-phase PWM scheme, three pairs of switching elements (Sa, Sb, Sc, S'a, S'b, S'c) repeat turn-on and turn-off operations, and wherein in the two-phase PWM scheme, upper-arm switching elements (Sa, Sb) and lower-arm switching elements (S'a, S'b) of two pairs among three pairs of switching elements (Sa, Sb, Sc, S'a, S'b, S'c) repeat turn-on and turn-off operations, and one of an upper-arm switching element (Sc) or a lower-arm switching element (S'c) in the remaining one pair among three pairs of switching elements (Sa, Sb, Sc, S'a, S'b, S'c) stays in a turn-on state and the other one of the upper-arm switching element (Sc) or the lower-arm switching element (S'c) in the remaining one pair stays in a turn-off state.