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Patent Searching and Data


Title:
DRIVING DEVICE OF SEMICONDUCTOR ELEMENT
Document Type and Number:
WIPO Patent Application WO/2017/208668
Kind Code:
A1
Abstract:
The present invention comprises: a plurality of detection circuits (32, 33, 34) that detect information required for a operation for protecting a semiconductor element constituting a power conversion device; a protection-signal-generating unit (35) that generates protection signals of different pulse widths for each of the plurality of detection circuits when the plurality of detection circuits detect the information required for the protection operation; a protection-state-monitoring unit (36) that generates protection state signals while the information required for a protection operation is detected by any of the plurality of detection circuits; and a signal output unit (40) that, when a protection signal has been inputted, changes the state from a first level to a second level, and that, when input of the protection signal has been stopped and the protection state signal is inputted, outputs an alarm signal to become an interim level between the first level and the second level.

Inventors:
YAMAMURA TAKUO (JP)
Application Number:
PCT/JP2017/015987
Publication Date:
December 07, 2017
Filing Date:
April 21, 2017
Export Citation:
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Assignee:
FUJI ELECTRIC CO LTD (JP)
International Classes:
H02M1/00; H02M1/08; H02M7/48
Domestic Patent References:
WO2016052011A12016-04-07
Foreign References:
JP2014103820A2014-06-05
Attorney, Agent or Firm:
HIROSE Hajime et al. (JP)
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