CONTROL CIRCUIT WITH FEEDBACK
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United States of America Patent
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Issued Date -
Jun 1, 2017
app pub date -
Nov 23, 2016
filing date -
Nov 27, 2015
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Abstract
A gate drive circuit adapted to control a power semiconductor component, the gate drive circuit comprising a gate driver connectable to a positive auxiliary voltage and to a negative auxiliary voltage, the gate drive circuit comprising a feedback circuit having an inductive coupling element for providing a feedback signal, wherein one end of the feedback circuit having the inductive coupling element is connected to a known reference potential and the other end of the feedback circuit is connected to the gate driver, and the inductive coupling element is inductively coupled to the main current path of the power semiconductor component for providing feedback signal to the gate driver based on the change rate of the current of the power semiconductor component for limiting the change rate of the current of the power semiconductor component.
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