Patent ID: 11901884
Assignee: INFINEON TECHNOLOGIES AG
Field: Measurement (Instruments)
Classification: CPC H  G | IPC H

Claim 0:
1. A method comprising:
comparing, by an evaluation circuit, a first measurement signal to a second measurement signal, wherein the evaluation circuit comprises a measuring resistor;
wherein the first measurement signal is a drain-source voltage of a first transistor connected in series to a load,
wherein the first transistor conducts a first load current, and the first measurement signal comprises an indication of an amount of the first load current,
wherein the second measurement signal comprises a drain-source voltage of a second transistor which is connected in series to the load,
wherein the second transistor conducts a second load current, and the second measurement signal comprises an indication of an amount of the second load current;

based on the comparison, determining whether the first measurement signal deviates from the second measurement signal by more than a threshold value, wherein the threshold value defines the amount of the second load current multiplied by a constant, wherein selecting a value for the measuring resistor sets the value for the constant; and
in response to determining that the first measurement signal deviates from the second measurement signal by more than the threshold value, detecting the presence of an error.