Abstract: An in-vehicle control includes a first relay provided between a high-voltage battery and a high-voltage load, a first voltage conversion unit between the first relay and a low-voltage load, a second voltage conversion unit in parallel with the first relay and the first voltage conversion unit and the control unit. The first voltage conversion unit converts a voltage input from the high-voltage battery via the first relay into a low-voltage and outputs the low-voltage to a low-voltage load side. The second voltage conversion unit converts a voltage input from the high-voltage battery into a low-voltage and outputs the low-voltage to the low-voltage load side. The control unit controls the first relay in an ON state, causing the first voltage conversion unit to perform the first conversion operation while the vehicle is traveling, causing the second voltage conversion unit to perform the second conversion operation while the vehicle is parked.

Abstract: An abnormality detection device includes a parallel circuit unit in which a plurality of conductive paths are connected in parallel, a plurality of current sensors, and an abnormality determination unit. The current sensors respectively detect currents flowing through the plurality of conductive paths. The abnormality determination unit performs abnormality determination of the current sensors based on the respective detection values of the plurality of current sensors. In the abnormality detection device, currents distributed between the plurality of conductive paths are detected by the respective current sensor, and abnormality determination of the current sensors is performed based on the detection values. Accordingly, with this configuration, the current tolerance of the individual current sensors can be reduced, and thus the current sensors can be easily downsized.

Abstract: When a calculated duty obtained through a feedback operation is within a specific range, a duty outside the specific range is adopted without increasing a difference from the operation result. When a calculated duty obtained through a feedback operation is within a modification target range, an arithmetic unit of a DC-DC converter selects a predetermined value as a substitute and determines a usage duty based on the substitute. Whenever the calculated duty within the modification target range is obtained, the arithmetic unit updates a cumulative value by accumulating a value indicating a difference between the usage duty based on the substitute and the calculated duty. When a predetermined condition is met, the arithmetic unit modifies the usage duty by performing addition or subtraction on a part or whole of the cumulative value, and updates the cumulative value by subtracting the value used for modifying the usage duty.

Abstract: When a calculated duty obtained through a feedback operation is within a specific range, a duty outside the specific range is adopted without increasing a difference from the operation result. When a calculated duty obtained through a feedback operation is within a modification target range, an arithmetic unit of a DC-DC converter selects a predetermined value as a substitute and determines a usage duty based on the substitute. Whenever the calculated duty within the modification target range is obtained, the arithmetic unit updates a cumulative value by accumulating a value indicating a difference between the usage duty based on the substitute and the calculated duty. When a predetermined condition is met, the arithmetic unit modifies the usage duty by performing addition or subtraction on a part or whole of the cumulative value, and updates the cumulative value by subtracting the value used for modifying the usage duty.