Switching converter circuit
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United States of America Patent
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Sep 24, 2013
Grant Date -
Mar 1, 2012
app pub date -
Aug 17, 2011
filing date -
Aug 25, 2010
priority date (Note) -
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Abstract
A switching converter circuit utilized for converting voltages applied to a first input terminal and a second input terminal into constant voltages to output the constant voltages to a load includes a first switching unit connected between the first and the second input terminals, a second switching unit cascade connected with a third switching unit between the second input terminal and an output terminal, a fourth switching unit connected in parallel with the second and the third switching units, a first comparator to control switching on or off of the third switching unit, a second comparator to control switching on or off of the fourth switching unit, and a controller to control a time to allow the first comparator to output an output signal such that the fourth switching unit is switched off before the third switch is switched off based on the signal output from the first comparator.
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