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1. (WO2018055900) SWITCHING ELEMENT DRIVING CIRCUIT

Pub. No.:    WO/2018/055900    International Application No.:    PCT/JP2017/027059
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Thu Jul 27 01:59:59 CEST 2017
IPC: H03K 17/695
H02M 1/08
H03K 17/16
H03K 17/56
H03K 17/687
Applicants: AISIN AW CO., LTD.
アイシン・エィ・ダブリュ株式会社
Inventors: TAKAKURA Yuji
▲高▼倉裕司
NAKAMURA Yasushi
中村恭士
Title: SWITCHING ELEMENT DRIVING CIRCUIT
Abstract:
The purpose of the present invention is to suitably control a switching element to an off state even in a case when a switching control signal is amplified, and the supply of power to a driving circuit transmitted to the switching element is delayed. Provided are: a compensation resistor (R2) that connects an input unit (IN) and an output unit (OUT) of a push-pull buffer circuit (21); and an input-side pull-down resistor (R3) that connects the input unit (IN) and a negative electrode (VG) side of a switching element (3) subject to driving. The sum of the resistance value of the compensation resistor (R2) and the resistance value of the input-side pull-down resistor (R3) is set to a value that is smaller than the resistance value of a resistor (R1) between a control terminal (G) of the switching element (3) subject to driving and an emitter terminal or a source terminal (S) of the switching element (3), and greater than the resistance value of a lower-side current controlling resistor (R21L) connected between a second potential (–V2) more negative than the negative electrode (VG) and a lower-side buffer element (21L).