Multiphase buck type voltage regulator
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United States of America Patent
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May 24, 2005
Grant Date -
Jun 3, 2004
app pub date -
Jul 14, 2003
filing date -
Jul 12, 2002
priority date (Note) -
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Abstract
A multiphase buck type voltage regulator having at least two phases and including a first switching means that selectively connect a supply voltage to a load through a first current path; a second switching means that selectively connect said supply voltage to said load through a second current path; a first activation circuit that activates said first switching means; a first delay circuit that deactivates said first switching means after a first period of time; a second activation circuit that activates said second switching means; a second delay circuit that after a second period of time deactivates said second switching means; said first period of time depends on said supply voltage and on the output voltage; said second period of time depends on said supply voltage and on a voltage proportional to the difference of current that flows in said first and second current path.
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