Method and arrangement for actuating a metal-oxide-semiconductor field-effect transistor

A method for actuating a metal-oxide-semiconductor field-effect transistor (MOSFET), in particular a wide-bandgap MOSFET, comprising:

• storing in a characteristic block a change of at least one actuating variable, which actuates the MOSFET as a function of at least one operating characteristic variable that influences the switching behavior of the MOSFET, with the change counteracting a reference actuating value of the actuating variable;
• ascertaining during operation of the MOSFET an actual value of the at least one operating characteristic variable;
• and
• changing the at least one actuating variable from the reference actuating value commensurate with the change of at least one actuating variable stored in the characteristic block, depending on the actual value of the at least one operating characteristic variable.

A current converter, in particular a traction current converter, comprising:

• at least one metal-oxide-semiconductor field-effect transistor (MOSFET) and;
• and
• an actuating arrangement for controlling the MOSFET, said actuating arrangement comprising:
• an evaluation unit receiving at least one operating characteristic variable of the MOSFET that influences a switching behavior of the MOSFET, said evaluation unit comprising a characteristic block storing a change of at least one actuating variable of the MOSFET compared to a reference actuating value as a function of the at least one operating characteristic variable, and
• a control unit receiving a control signal and producing a changed actuating value of the at least one actuating variable, wherein the changed actuating value is changed from the reference actuating value of the actuating variable commensurate with the change of the at least one actuating variable ascertained by the evaluation unit, and actuating the MOSFET in response to a control signal with the changed actuating value.