Voltage monitoring using bitstream signal processing
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United States of America Patent
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May 7, 2013
Grant Date -
Mar 8, 2012
app pub date -
Sep 2, 2010
filing date -
Sep 2, 2010
priority date (Note) -
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Abstract
Systems and methods are provided for monitoring a voltage. A level shifter is configured to generate a current proportional to the voltage of the battery cell. A delta-sigma modulator is configured to convert the current into a first density modulated bitstream representing the voltage of the battery cell. A first reference source is configured to provide a second density modulated bitstream representing a first threshold voltage. A first comparator is configured to compare the first density modulated bitstream and the second density modulated bitstream.
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