Active gate drive circuit
A gate drive circuit and a method for controlling a gate-controlled component (30), the gate drive circuit comprising a PI controller (31) adapted to receive an input reference signal (v ref,d/dt ) and to control a gate voltage of the gate-controlled component. The gate drive circuit further compris...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A gate drive circuit and a method for controlling a gate-controlled component (30), the gate drive circuit comprising a PI controller (31) adapted to receive an input reference signal (v ref,d/dt ) and to control a gate voltage of the gate-controlled component. The gate drive circuit further comprises a first feedback loop for the PI controller (31) adapted to provide feedback from a time derivative of a collector-to-emitter voltage (v CE ) of the controlled component (30), the first feedback loop comprising first gain (k v ), a second feedback loop for the PI controller (31) adapted to provide feedback from the time derivative of the collector current (i C ) of the controlled component (30), the second feedback loop comprising second gain (k i ), wherein the second feedback loop comprises a clipping circuit (32) adapted to modify the feedback signal in the second feedback loop during turn-on of the controlled component (30) when the time derivative of the collector current is negative. |
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