Patent · US Active

Circuit apparatus and method for operating a circuit apparatus

US11228309B2 · kind B2 · utility

0Cited by

3References

15Claims

0Family size

Assignees

LEONI Bordnetz-Systeme GmbH · DE
Hella GmbH & Co. KGaA · DE

Inventors

Sebastian Doernbach · Gerbrunn, DE
Rolf Wagemann · Würzburg, DE
Markus Plaschke · Ettlingen, DE

Key dates

Filing date	Jan 19, 2021
Grant date	Jan 18, 2022
Priority date	—
Expiry date	Jan 19, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2017/066
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A circuit device and a method for safely disconnecting a semiconductor switching element, in particular a MOSFET, are provided, wherein the semiconductor switching element comprises a gate terminal, a source terminal and a drain terminal, wherein, during operation of the semiconductor switching element, a current path between the drain terminal and the source terminal can be reversibly disconnected by the gate terminal, and the gate terminal comprises a gate voltage potential and the source terminal comprises a source voltage potential. A fuse unit is arranged between the gate terminal and the source terminal, which fuse unit is set up and designed, as a function of a potential difference between the gate voltage potential and the source voltage potential, so as to electrically connect the gate terminal to the source terminal after the current path is disconnected, so that the gate voltage potential and the source voltage potential are adapted.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.