Current control systems with current feedbacks
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United States of America Patent
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-
Jul 10, 2012
Grant Date -
Dec 23, 2010
app pub date -
Jun 18, 2009
filing date -
Jun 18, 2009
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A current control system includes a first switch, a second switch, and a controller. The second switch is coupled in parallel with the first switch and operable for providing a feedback signal indicative of a current flowing through the first switch. The feedback signal is determined by a width-to-length ratio of the first switch and a width-to-length ratio of the second switch. In addition, the controller is coupled to the first and second switches and operable for adjusting the current according to the feedback signal.
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