Title:
POWER MODULE
Document Type and Number:
Japanese Patent JP2018098849
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce initial variations in switching loss and surge voltage, and further, to reduce a surge voltage generated when a power semiconductor element is turned off in an overcurrent state.SOLUTION: A power MOS 43 is turned on by injection of a control drive current I41 supplied from a constant current circuit 20 and a switch 41 to its input capacitance of a gate, and turned off by discharge of stored electric charge in the input capacitance and by emission of a control drive current I42 via a switch 42 and a constant current circuit 30-1. In a case of an overcurrent state when the power MOS 43 is turned off, the overcurrent state is detected by a surge voltage suppression circuit 50, and the control drive current I42 is reduced, and the reduced control drive current I43 is emitted to turn off the power MOS 43.SELECTED DRAWING: Figure 1
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Inventors:
SUZUKI KENICHI
Application Number:
JP2016239209A
Publication Date:
June 21, 2018
Filing Date:
December 09, 2016
Export Citation:
Assignee:
SHINDENGEN ELECTRIC MFG
International Classes:
H02M1/08
Domestic Patent References:
| JP2005253183A | 2005-09-15 | |||
| JP2013031357A | 2013-02-07 | |||
| JPH0716208U | 1995-03-17 | |||
| JP2009038517A | 2009-02-19 | |||
| JPH10150764A | 1998-06-02 | |||
| JP2013017078A | 2013-01-24 | |||
| JP2004215493A | 2004-07-29 |
Foreign References:
| US20060006922A1 | 2006-01-12 | |||
| US20110175650A1 | 2011-07-21 |
Attorney, Agent or Firm:
Kakimoto Yasunari
Kunihiko Ohashi
Kunihiko Ohashi
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