公开(公告)号：US12191848B2

公开(公告)日：2025-01-07

申请号：US17916743

申请日：2021-04-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryosuke Maeda ,  Yusuke Kinoshita ,  Hidetoshi Ishida

IPC: H03K17/16 ,  H02H3/20

Abstract: A control circuit controls a switching element including a gate and a source corresponding to the gate. The control circuit includes an inductor, a circuit element, and a resistor. The inductor is connected between the gate and the source of the switching element. The circuit element is connected in series to the inductor between the gate and the source. The circuit element allows an electric current to flow therethrough in response to generation of electromotive force in the inductor. The resistor is connected in parallel to the inductor and the circuit element between the gate and the source.

公开(公告)号：US12143098B2

公开(公告)日：2024-11-12

申请号：US17998658

申请日：2021-04-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yusuke Kinoshita ,  Yuta Nagatomi ,  Ryosuke Maeda ,  Satoshi Nakazawa

IPC: H03K17/082

Abstract: A power loss of a switching device is suppressed. Circuit for a switching device is used in switching device. Switching device includes first path and second path. First path includes first field effect transistor and first inductor. Second path includes second field effect transistor and second inductor. First path and second path are connected in parallel to power supply. A first maximum current that is a maximum current during conduction of first field effect transistor is smaller than a second maximum current that is a maximum current during conduction of second field effect transistor. Circuit for a switching device includes processing part. Processing part executes a specific operation according to a voltage difference between voltage across first inductor and voltage across second inductor.