- Patent Title: Gate drive circuit, power conversion apparatus, and railway vehicle
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Application No.: US15777126Application Date: 2016-06-24
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Publication No.: US10511301B2Publication Date: 2019-12-17
- Inventor: Satoru Akiyama , Ryuusei Fujita
- Applicant: HITACHI, LTD.
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Volpe and Koenig, P.C.
- International Application: PCT/JP2016/068893 WO 20160624
- International Announcement: WO2017/221417 WO 20171228
- Main IPC: H02M1/08
- IPC: H02M1/08 ; H03K17/16 ; B61C3/00 ; H02M7/5387 ; H02P27/06

Abstract:
A gate drive circuit to prevent a false turn-on phenomenon includes a first, second, third and fourth switching element, and a capacitor. A source of the first switching element is connected to a first voltage, and a drain of the same is connected to the main switching element's gate electrode. A source of the second switching element is connected to a second voltage, and a drain of the same is connected to the gate electrode. A source of the third switching element is connected to the first voltage, and a drain of the same is connected to a first electrode of the capacitor. A source of the fourth switching element is connected to the second voltage, and a drain of the same is connected to the first electrode and to the drain of the third switching element. A second electrode of the capacitor is connected to the gate electrode.
Public/Granted literature
- US20180375509A1 GATE DRIVE CIRCUIT, POWER CONVERSION APPARATUS, AND RAILWAY VEHICLE Public/Granted day:2018-12-27
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