Passgate strength calibration techniques for voltage regulators
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United States of America Patent
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Mar 17, 2015
Grant Date -
Mar 5, 2015
app pub date -
Aug 13, 2014
filing date -
Aug 29, 2013
priority date (Note) -
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Abstract
Systems and methods are provided to regulate a supply voltage of a load circuit. For example, a system includes a voltage regulator circuit that includes a passgate device. The system includes a passgate strength calibration control module which is configured to (i) obtain information which specifies operating conditions of the voltage regulator circuit, (ii) access entries of one or more look-up tables using the obtained information, (iii) use information within the accessed entries to determine a maximum load current that could be demanded by the load circuit under the operating conditions specified by the obtained information, and to predict a passgate device width which is sufficient to supply the determined maximum load current, and (iv) set an active width of the passgate device according to the predicted passgate device width.
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