電圧駆動素子の駆動回路

Drive circuit of voltage drive element

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drive circuit of a voltage drive element capable of efficiently controlling the voltage drive element by inhibiting the discharging amount of a capacitor during a turn-off operation. <P>SOLUTION: This drive circuit of the voltage drive element is constructed by adding a capacitor to between a gate and an emitter terminal in the voltage drive element. Moreover, this drive circuit is configured so that the capacitor C101 may be connected only during a turn-on operation of the voltage drive element Q101, and may be disconnected during a turn-off operation of the voltage driving element Q101. Preferably, a switch element 100 and the capacitor C101 should be connected in series between the gate and the emitter in the voltage drive element, then the voltage drive element is connected from between the gate terminal of the voltage drive element and one terminal of the switch element 100 to a transistor for gate discharging through a resistor, thereby linking to a driving signal of the voltage drive element for on-off control of the switch element. <P>COPYRIGHT: (C)2006,JPO&NCIPI
【課題】ターンオフ動作時のコンデンサ放電電荷量を抑制することができ、効率の良い電圧駆動素子の制御を行うことができる電圧駆動素子の駆動回路を提供する。 【解決手段】電圧駆動素子のゲート・エミッタ端子間にコンデンサを付加してなる電圧駆動素子の駆動回路において、電圧駆動素子のターンオン時のみコンデンサC101が接続され、電圧駆動素子Q101のターンオフ時にはコンデンサが切り離されるよう構成する。好ましくは、電圧駆動素子のゲート・エミッタ間にスイッチ素子100とコンデンサC101とを直列に接続し、電圧駆動素子のゲート端子とスイッチ素子の一方の端子との間から、抵抗を介してゲート電荷放電用トランジスタへ接続し、スイッチ素子を電圧駆動素子の駆動信号に連動してオンオフ制御できるよう構成する。 【選択図】図1

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (3)

    Publication numberPublication dateAssigneeTitle
    CN-102801287-ANovember 28, 2012深圳市科陆变频器有限公司Driving voltage-limiting circuit for power device
    JP-2015211568-ANovember 24, 2015三菱電機株式会社, Mitsubishi Electric Corpゲート駆動回路
    WO-2017073215-A1May 04, 2017ローム株式会社Circuit de pilotage de commutateur, circuit de commutateur, et dispositif d'alimentation électrique