Title:
SWITCHING ELEMENT DRIVE CIRCUIT
Document Type and Number:
Japanese Patent JP2018068097
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a switching element drive circuit which can reduce a loss in a plurality of switching elements mutually connected in parallel.SOLUTION: A U-phase first upper arm switching element SUHA, which is an IGBT, and a U-phase second upper arm switching element SUHB, which is a MOSFET, are connected in parallel. A drive circuit Dr, after switching the U-phase first upper arm switching element SUHA to an ON state first, switches the U-phase second upper arm switching element SUHB to an ON state. The drive circuit Dr makes the charging speed of the gate electric charge of the U-phase second upper arm switching element SUHB higher than the charging speed of the gate electric charge of the U-phase first upper arm switching element SUHA.SELECTED DRAWING: Figure 3
Inventors:
HAYASHI YOSHINORI
WATANABE KAZUNORI
SUZUKI TOMOTAKA
MURAHO TOMOYUKI
WATANABE KAZUNORI
SUZUKI TOMOTAKA
MURAHO TOMOYUKI
Application Number:
JP2017078462A
Publication Date:
April 26, 2018
Filing Date:
April 11, 2017
Export Citation:
Assignee:
DENSO CORP
International Classes:
H02M1/08; H02M7/48
Domestic Patent References:
| JPH04354156A | 1992-12-08 | |||
| JP2010217043A | 2010-09-30 | |||
| JP2014217249A | 2014-11-17 | |||
| JP2013215039A | 2013-10-17 | |||
| JP5805513B2 | 2015-11-04 | |||
| JPH05291913A | 1993-11-05 | |||
| JP2006191774A | 2006-07-20 | |||
| JP2010279193A | 2010-12-09 | |||
| JPH07322600A | 1995-12-08 |
Attorney, Agent or Firm:
Tsuyoshi Yamada
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita