Hitachi Automotive Systems, Ltd.

Satoshi Idei

Hiroshi Tamura

Kenji Kubo

Takuma Ono

Susumu Sato

An object is to suppress deterioration of a high-voltage side battery regardless of the magnitude of a load current. Provided is a control device of a DC-DC converter that is constituted by a primary side circuit that is electrically connected between an input side and a transformer, and a secondary side circuit that is electrically connected between an output side and the transformer. The control device includes a command generating unitthat sets an output current limiting value to a predetermined value on the basis of a detected input voltage, a duty generating unitthat calculates a duty configured to turn ON/OFF a switching element on the basis of the output current limiting value and a detected output current, and a switching signal generating unitthat generates a switching signal on the basis of the duty. The duty generating unitgenerates the duty so that an output current is limited to the output current limiting value or less.

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Hitachinaka, Japan

Satoshi Idei