Patent ID: 10020805

Abstract:
A bidirectional MOSFET switch is provided. The switch includes an input terminal, an output terminal and two MOSFET transistors which are connected to one another by their source and gate terminals. The input and the output terminals are connected to a respective drain terminal of the two MOSFET transistors. The switch further includes a control input terminal that is galvanically isolated by a potential isolator and connected to a control unit configured to switch a control current for a FET transistor via a further MOSFET transistor. The FET transistor is configured to generate, by the control current, a gate voltage Vgs between the gate and the source at the two MOSFET transistors for the switching thereof, and a floating voltage source, which is galvanically connected to the input and which is configured to generate a gate control current for the two MOSFET transistors.