Integrated circuit for controlling a switch of a current path with leading edge blanking device of the current signal
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United States of America Patent
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Jul 19, 2016
Grant Date -
Mar 7, 2013
app pub date -
Nov 1, 2012
filing date -
May 4, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
An integrated control circuit of a switch is described, which is adapted to open or close a current path; said integrated circuit includes a comparator to compare a first signal with a second signal representative of the current flowing through said current path. The comparator outputs a third variable signal between a low logic level and a high logic level according to whether said second signal is lower than said first signal or vice versa; the integrated circuit has a driver to generate a signal to drive said switch in response to the third signal, and is configured to detect a spike on the leading edge of said second signal and to blank said third signal for a first blanking time period which depends on a turn-on delay of said switch and a second blanking period which depends on the duration of said spike on the leading edge of said second signal.
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