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Title:
GATE DRIVE CIRCUIT AND SWITCHING DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/187484
Kind Code:
A1
Abstract:
A gate drive circuit (1) comprises: a transmission unit (10) that generates a power signal used for driving a gate a semiconductor switching element (60); an isolation element (3) that transmits the power signal in an electrically isolated state; a plurality of rectification circuits (2) that rectify the output of the isolation element (3) and output a rectified signal; and a plurality of drive transistors (5) cascade-connected between a power supply and the gate of the semiconductor switching element (60). The outputs of the rectification circuits (2) are given to the gates of the drive transistors (5), and ground terminals of the correspondingly-provided rectification circuits (2) are connected to sources.

Inventors:
ENOMOTO, Shingo
NAGAI, Shuichi
KAWAI, Yasufumi
NEGORO, Noboru
TABATA, Osamu
CHOE, Songbaek
NAGATOMI, Yuta
Application Number:
JP2019/000350
Publication Date:
October 03, 2019
Filing Date:
January 09, 2019
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
H03K17/10; H02M1/08; H03K17/605; H03K17/687; H03K17/689
Domestic Patent References:
WO2013065254A12013-05-10
Foreign References:
JP2015164290A2015-09-10
JP2016220210A2016-12-22
JP2016158240A2016-09-01
JPH0993908A1997-04-04
JP2016127737A2016-07-11
Attorney, Agent or Firm:
NII, Hiromori et al. (6F Tanaka Ito Pia Shin-Osaka Bldg., 3-10, Nishi Nakajima 5-chome, Yodogawa-ku, Osaka-cit, Osaka 11, 〒5320011, JP)
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