Drive device

A drive device that drives a plurality of loads by controlling a plurality of semiconductor switches corresponding to the loads, the drive device comprising:

• a control storage unit that stores a current value of a control signal including a signal indicating a drive state of each of the loads;
• a drive unit that controls the plurality of semiconductor switches according to the current value of the control signal;
• an acquisition unit that acquires a current drive state indicating the drive state of each of the loads at a present time;
• a determination storage unit that stores a transition determination value for determining whether the current value of the control signal stored in the control storage unit is abnormal, the transition determination value being correlated with a driving transition from the current drive state;
• a determination unit that compares a correlated drive state of each of the loads correlated with the current value of the control signal stored in the control storage unit with the transition determination value, and determines that the current value of the control signal is abnormal when the correlated drive state and the transition determination value satisfy a predetermined corresponding relationship;
• and
• a power supply unit that switches a power supply state for the plurality of loads, wherein:
• the power supply unit sets the power supply state to be a power feed state when the determination unit determines that the current value of the control signal is not abnormal, and sets the power supply state to be a cut-off state when the determination unit determines that the current value of the control signal is abnormal;
• and
• the drive unit outputs a drive signal corresponding to the control signal to the plurality of semiconductor switches and controls a vehicle.