Title:
ELECTRIC CURRENT DETECTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/026618
Kind Code:
A1
Abstract:
Provided is an electric current detecting device that collectively detects the electric currents of a plurality of semiconductor devices (power semiconductor devices) using the inductance of the wiring when the plurality of semiconductor devices are connected in parallel. This invention comprises: a plurality of input resistors (111-11n), each having one terminal connected to the wiring of a respective power semiconductor module (301-30n) and having another terminal connected to a single point at an input connection point (P100); a summing resistor (120) connected between the input connection point (P100) and ground (G); and an integrator (12) that integrates the voltage across both terminals of the summing resistor (120).
Inventors:
INABA MASAMITSU (JP)
NAGASU MASAHIRO (JP)
NAGASU MASAHIRO (JP)
Application Number:
PCT/JP2019/024006
Publication Date:
February 06, 2020
Filing Date:
June 18, 2019
Export Citation:
Assignee:
HITACHI POWER SEMICONDUCTOR DEVICE LTD (JP)
NATIONAL INSTITUTE OF TECH KOSEN (JP)
NATIONAL INSTITUTE OF TECH KOSEN (JP)
International Classes:
G01R19/00; H02M1/00
Foreign References:
| JP2017122631A | 2017-07-13 | |||
| JPH10323016A | 1998-12-04 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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