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Title:
DRIVE CIRCUIT OF POWER DEVICE
Document Type and Number:
Japanese Patent JP2007243585
Kind Code:
A
Abstract:

To provide a power device driving circuit capable of preventing the transmission of an error signal due to the negative noise, dv/dt, of a high potential side potential reference.

The driving circuit is provided with a level shift circuit for shifting the level of an ON signal and an OFF signal for respectively controlling the ON/OFF of a power device and outputting the level-shifted signals, a mask circuit for interrupting the transmission of the ON signal and the OFF signal when the levels of the ON signal and the OFF signal are lower than a first threshold level, and a short circuit arranged in a stage before the mask circuit so as to short-circuit the transmission route of the ON signal and the transmission route of the OFF signal when the levels of the ON signal and the OFF signal are lower than a second threshold level. The second threshold level is higher than the first threshold level.

COPYRIGHT: (C)2007,JPO&INPIT


Inventors:
SHIMIZU KAZUHIRO
Application Number:
JP2006062934A
Publication Date:
September 20, 2007
Filing Date:
March 08, 2006
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02M1/08; H03K17/16
Domestic Patent References:
JP2003273715A2003-09-26
JP2005304113A2005-10-27
JP2001145370A2001-05-25
JP2003339151A2003-11-28
Attorney, Agent or Firm:
Mamoru Takada
Hideki Takahashi