Title:
SEMICONDUCTOR DEVICE AND OVERCURRENT PROTECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/199840
Kind Code:
A1
Abstract:
he present invention suppresses oscillation in a sense current detection signal outputted from a power semiconductor element for current monitoring. A voltage control circuit (1c) includes a diode (D1) for charging a gate voltage to be applied to the gate of a current monitoring element (1b) and a diode (D2) for discharging the gate voltage, and controls the gate voltage for the current monitoring element (1b). The collector of an output element (1a) and the collector of the current monitoring element (1b) are connected to a supply voltage via a terminal (C). The emitter of the output element (1a) is connected to a load (2) via a terminal (E). The sense emitter of the current monitoring element (1b) is connected to a terminal (SE). The anode of the diode (D1) is connected to the gate of the output element (1a) and the cathode of the diode (D2). The cathode of the diode (D1) is connected to the anode of the diode (D2) and the gate of the current monitoring element (1b).
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Inventors:
SATO SHIGEKI (JP)
Application Number:
PCT/JP2023/014242
Publication Date:
October 19, 2023
Filing Date:
April 06, 2023
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD (JP)
International Classes:
H02M1/00; H02M1/08; H03K17/00; H03K17/08
Foreign References:
| JP2015233133A | 2015-12-24 | |||
| JP2016021652A | 2016-02-04 | |||
| JP2009165285A | 2009-07-23 |
Attorney, Agent or Firm:
FUSO INTERNATIONAL PATENT FIRM (JP)
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