Hitachi Astemo Ltd.

Honda Motor Co., Ltd.

Shintaro Tai

Kazunari Kurokawa

Yuta Nakamura

Shugo Ueno

Yoshinori Sagiya

Masatoshi Goto

Tetsuya Onodera

A control device that does not require arithmetic processing of a phase current can be provided. A control device in which a plurality of switching legs including a pair of semiconductor switching elements constituting an upper arm and a lower arm are provided in a number corresponding to the number of phases of a motor that is a load includes a switch short circuit detection unit configured to detect a short circuit failure of the semiconductor switching element, and a control unit configured to execute determination processing of determining whether the short circuit failure has occurred in the upper arm or the lower arm on the basis of a result of detection by the switch short circuit detection unit, and to set all the semiconductor switching elements that constitute an arm in which a short circuit failure has occurred on the basis of a result of the determination processing.

Control device

A gate driving power source device can be miniaturized by sharing power source units, and a large current can be prevented from locally flowing in a single chip even when a short-circuit failure occurs in a multi-phase conversion circuit included in a power conversion device. There is provided a shared power source unit supplying a shared DC power source to a gate drive circuit provided in any one of a plurality of lower arms of multi-phase conversion circuits or any one of a plurality of upper arms of the multi-phase conversion circuit and gate drive circuits provided in upper arms or lower arms of other conversion circuits.

Gate driving power source device including shared power source unit

An electric circuit device including a first high voltage serial connection circuitand a second high voltage serial connection circuit, those are provided on a board and connected to an end of high electric potential of a power source for automobile use; and a first low voltage serial connection circuitand a second low voltage serial connection circuit, those are provided on the board and connected to an end of low electric potential of the power source for automobile use, wherein the first high voltage serial connection circuitand the second high voltage serial connection circuitare respectively disposed on both surfaces of the board opposite to each other, and the first low voltage serial connection circuitand the second low voltage serial connection circuitare respectively disposed on the both surfaces of the board opposite to each other.

Electric circuit device

Growing community of inventors

Utsunomiya, Japan

Shintaro Tai