Title:
SEMICONDUCTOR DEVICE AND OVERCURRENT PROTECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/195275
Kind Code:
A1
Abstract:
The present invention suppresses oscillation occurring in a detection signal of a sense electric current outputted from a semiconductor element for electric current monitoring. Collectors of a main IGBT (1a) and a sense IGBT (1b) are connected to an electric power supply voltage via a terminal (C). An emitter of the main IGBT (1a) is connected to a load (2) via a terminal (E). A sense emitter of the sense IGBT (1b) is connected to a terminal (SE). A gate of the main IGBT (1a) is connected to one end of a capacitance (C0) and a terminal (G), and the other end of the capacitance (C0) is connected to a gate of the sense IGBT (1b). When a turn-on instruction for the main IGBT (1a) by a driving signal (s0) has been issued, the sense IGBT (1b) allows a sense electric current, which is proportional to the electric current flowing through the main IGBT (1a), to flow from the collector to the sense emitter.
Inventors:
SATO SHIGEKI (JP)
Application Number:
PCT/JP2023/007712
Publication Date:
October 12, 2023
Filing Date:
March 02, 2023
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD (JP)
International Classes:
H03K17/00; H02M1/00; H02M1/08; H03K17/08; H03K17/082; H03K17/16
Foreign References:
| JP2020014103A | 2020-01-23 | |||
| JPH0653795A | 1994-02-25 | |||
| JPH0548434U | 1993-06-25 |
Attorney, Agent or Firm:
FUSO INTERNATIONAL PATENT FIRM (JP)
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