Infineon Technologies Ag

Christian Novak

Marcus Nuebling

Christoph Bauer

Peter Weiss

Peter Weiß

This disclosure describes a driver circuit configured to control a gate injection transistor (GIT). The driver circuit is configured to output a control current to a gate of the GIT, detect a voltage at the gate of the GIT, and determine a load current through the GIT based on the voltage detected at the gate of the GIT. The voltage at the gate of the GIT may be dependent on both the load current and the control current.

Techniques and driver circuits configured to monitor load current through a gate injection transistor (GIT)

A device for controlling a current controlled switching element includes an output node, a current driver circuit, and detection circuitry. The output node is configured to electrically couple to a control node of the current controlled switching element. The current controlled switching element is configured to change from operating in an off-state to operating in an on-state when a charge supplied to the control node causes a voltage at the control node to be greater than an activation threshold. The current driver circuit configured to output an activation current to the output node in response to a switching signal indicating to change from operating the current controlled switching element from the off-state to the on-state. The detection circuitry is configured to detect, based on the voltage at the control node, when a switching event has occurred while the current driver circuit outputs the activation current.

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Remseck am Neckar, Germany

Christian Novak