Omron Corporation

Hironori Tauchi

Noriyuki Nosaka

Takuro Hashimoto

Wataru Okada

Satoshi Iwai

Takashi Hyodo

Yuki Ito

Mamoru Sueki

An overcurrent protection circuit includes a first switching element including a fourth terminal, a sixth terminal connected to a first terminal, and a fifth terminal, and a second switching element including a seventh terminal connected to the fifth terminal, an eighth terminal connected to the fourth terminal, and a ninth terminal. The first switching element electrically connects the sixth terminal and the fifth terminal in response to detecting a voltage value between the first terminal and a third terminal of the switching device exceeding a predetermined threshold based on the predetermined threshold voltage input into the fourth terminal. The second switching element electrically connects, in response to the sixth terminal and the fifth terminal of the first switching element being electrically connected to each other, the eighth terminal and the ninth terminal to lower the predetermined threshold voltage input into the fourth terminal of the first switching element.

Overcurrent protection circuit and power converter

A driving circuit that drives a switching element, the driving circuit includes: a controller that includes a first terminal connected to a gate terminal of the switching element and a second terminal connected to a source terminal of the switching element, and outputs a control signal from the first terminal to the gate terminal; a first capacitor and a first resistor connected in parallel; and a second capacitor and a second resistor connected in parallel, in which the first capacitor and the first resistor are connected in series to a first connecting wire for connecting the gate terminal and the first terminal on the gate terminal side of the first connecting wire, and in which the second capacitor and the second resistor are connected in series to the first connecting wire on the first terminal side of the first connecting wire.

Driving circuit for switching element and switching circuit

An unbalanced failure detector circuit according to one aspect of the present disclosure is provided for detecting an unbalanced failure of an electronic device apparatus including electronic devices, and the electronic device apparatus includes a plurality of current paths connected in parallel. The unbalanced failure detector circuit includes a detector unit, and a controller. The detector unit has a plurality of coils connected in series and arranged to surround the plurality of current paths, respectively, and is configured to output a coil sum voltage which is a sum of induced voltages generated across the plurality of coils by currents flowing through the plurality of current paths. The controller is configured to detect the unbalanced failure of the electronic device apparatus when the coil sum voltage outputted from the detector unit exceeds a predetermined value range.

Unbalanced failure detector circuit for detecting unbalanced failure of electronic device apparatus including electronic devices

Growing community of inventors

Kyoto, Japan

Hironori Tauchi