Gate-Treiberschaltung, Leistungsumwandlungsvorrichtung und Motoreinheit

Details

Veröffentlichungs-Nr.

EP4765604

Anmeldetag

1. März 2024

Veröffentlichung

20. Februar 2025

Rechtsraum

EP

IPC

H02M1/08, H02M1/00, H02M7/48

Abstract

One embodiment of the gate drive circuit according to the present invention drives a switching element and comprises: a charging circuit that charges the input capacitance of a switching element by applying a gate voltage to the gate terminal of the switching element; and a discharging circuit that discharges the input capacitance. The charging circuit has: a first charging path having a series circuit in which a first switch and an inductor are connected in series between a first terminal and a first node; and a second charging path in which a second switch is connected between the first terminal and the first node. When the switching element is turned on, charging is performed through the first charging path after charging through the second charging path. The discharging circuit has a configuration in which a path through which the discharge current flows from the gate terminal is switched between a first discharging path and a second discharging path having a resistance value higher than that of the first discharging path.

Anmelder

Firma

Nidec Corporation

Land

🇯🇵 Japan