Title:
SEMICONDUCTOR DEVICE DRIVING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2017/098624
Kind Code:
A1
Abstract:
A semiconductor device driving circuit is provided with: a signal transmission circuit including a first level shift circuit for level-shifting an input signal having a first voltage level and generating, on the basis of the input signal, a drive signal having a second voltage level higher than the first voltage level; and a desaturation voltage detection circuit for, when detecting the desaturation voltage of a semiconductor switching element driven by the drive signal, outputting a first error signal having the first voltage level. The semiconductor device driving circuit level-shifts the first error signal or a conversion signal obtained by converting the first error signal to a pulse signal and thereby generates a second error signal having the second voltage level. The semiconductor device driving circuit is further provided with a soft cutoff circuit for changing the drive signal for the semiconductor switching element so that the semiconductor switching element is cut off softly when the second error signal is input.
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Inventors:
HOKAZONO KAZUYA (JP)
YAMAMOTO AKIHISA (JP)
WANG DONG (JP)
YAMAMOTO AKIHISA (JP)
WANG DONG (JP)
Application Number:
PCT/JP2015/084617
Publication Date:
June 15, 2017
Filing Date:
December 10, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M1/08; H03K5/003; H03K17/00
Foreign References:
| JP2004260981A | 2004-09-16 | |||
| JP2005006464A | 2005-01-06 | |||
| JP2015202034A | 2015-11-12 |
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (JP)
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