Circuit arrangement for connecting a first node with a second circuit node and for the protection of the first node against an overvoltage

摘要

The invention relates to a circuit arrangement for connecting a first node (1) with a second circuit node (2) and for the protection of the first node (1) in front of an excess voltage at the second circuit node (2) has the following features:a first semiconductor switching element (m1) with a load path and a control connection, whose load path between the first and second circuit node is connected,a drive circuit (10) for the first semiconductor switching element (m1), which is designed for this purpose, one on the first circuit node (1) which is applied to the first voltage (vcc1) to detect and the first semiconductor switch element (m1) stepwise, via the control input, when the first voltage (vcc1) reaches a first threshold value.