Patent ID: 11916545
Assignee: SIEMENS AKTIENGESELLSCHAFT
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 14:
15. The gate driver of claim 14, wherein the measuring unit measures a test drain source voltage at the input of the measuring unit when the gate driver applies a test switch off gate voltage as the switch off gate voltage and a test reverse current flows between the drain terminal and a source terminal of the power semiconductor element; said measuring unit determining a variation in the test drain source voltage from a reference drain source voltage as a threshold voltage change, said variation occurring between the drain terminal and the source terminal of the power semiconductor element with the test switch off gate voltage applied when a threshold voltage of the power semiconductor element matches a reference threshold voltage; said measuring unit determining a threshold voltage change in the threshold voltage of the power semiconductor element in relation to the reference threshold voltage; and the adding unit changing the switch on gate voltage by the threshold voltage change in relation to a reference switch on gate voltage corresponding to the reference threshold voltage.