Audio-skipping of a constant on-time power converter
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United States of America Patent
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Mar 4, 2014
Grant Date -
May 31, 2012
app pub date -
Nov 30, 2011
filing date -
Nov 30, 2010
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Abstract
When the switching frequency of a constant on-time power converter decreases to a threshold, the power converter is switched from the original operation of triggering a constant on-time of a high-side switch responsive to the output voltage of the power converter reaching a valley point to the operation of triggering a constant off-time of the high-side switch responsive to the output voltage reaching a peak point, to thereby prevent the power converter from operating in an audio frequency range.
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