Patent ID: 11901888
Assignee: INFINEON TECHNOLOGIES AUSTRIA AG
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A gate charge profiler system, comprising:
a power transistor comprising a gate that controls conduction between a drain and a source;
a gate driver configured to drive the gate of the power transistor with a gate drive current in response to an input signal;
a gate charge profiler, comprising:
an analog comparator configured to generate a comparison signal when a drain-source voltage across the drain and the source equals a threshold voltage; and
a timer arranged subsequent to the analog comparator and configured to output a time value based on input of a transition of the input signal and input of the comparison signal; and

a controller, configured to:
output the input signal to the gate driver and the timer; and
calculate a value of a gate charge of the power transistor based on the gate drive current and the time value.