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Title:
POWER DEVICE DRIVE CIRCUIT
Document Type and Number:
Japanese Patent JP2018125889
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a power device drive circuit that is able to immediately turn off a power device without using a negative power source.SOLUTION: A drive circuit 1 includes a plurality of switch circuits SW2 to SW6 connected to a space between any two of a CG connection terminal 9, an E connection terminal 11, and a capacitance connection terminal 13. A control signal generating section 3 controls on/off of the plurality of switch circuits SW2 to SW6. When an IGBT2 is changed from an on-state to an off-state, a charging path is formed for supplying electric charges, which have been charged to a capacity between a control gate CG and an emitter, to a capacity 14 connected to the capacitance connection terminal 13, and then a negative voltage application path is formed for connecting a positive-potential-side terminal and a negative-potential-side terminal of the capacitor 14 to the emitter and a second gate respectively.SELECTED DRAWING: Figure 1

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Inventors:
YAMAMOTO MASAHIRO
IWAMURA TAKEHIRO
Application Number:
JP2018088146A
Publication Date:
August 09, 2018
Filing Date:
May 01, 2018
Export Citation:
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Assignee:
DENSO CORP
International Classes:
H03K17/04; H02M1/08; H03K17/0412
Domestic Patent References:
JP2009021823A2009-01-29
JP2009200891A2009-09-03
JP2013098415A2013-05-20
JP2014027345A2014-02-06
JP2014187479A2014-10-02
JPH06350076A1994-12-22
JPH05283676A1993-10-29
Attorney, Agent or Firm:
Patent Business Corporation Sato International Patent Office