Sepic fed buck converter
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United States of America Patent
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Oct 12, 2010
Issued Date -
N/A
app pub date -
Nov 14, 2008
filing date -
Dec 4, 2007
priority date (Note) -
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Abstract
A Single Ended Primary Inductance Converter (SEPIC) fed BUCK converter includes: a first switch configured to open or close according to a first signal; a SEPIC portion coupled to the first switch and coupled to an energy source, the SEPIC portion comprising a first set of one or more passive components; a BUCK converter portion coupled to the first switch, the BUCK converter portion comprising a second set of one or more passive components. While the first switch is closed, the SEPIC portion is configured to store energy from an energy source in at least some of the first set of passive components and deliver energy to the BUCK portion, and the BUCK converter portion is configured to deliver energy to a load and to store energy in at least some of the second set of passive components. While the first switch is open, the SEPIC portion is configured to deliver at least some of its stored energy to the load, and the BUCK converter portion is configured to deliver at least some of its stored energy to the load.
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