ASYMMETRIC TOPOLOGY TO BOOST LOW LOAD EFFICIENCY IN MULTI-PHASE SWITCH-MODE POWER CONVERSION
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United States of America Patent
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app pub date -
Apr 10, 2014
filing date -
Feb 5, 2009
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Abandoned
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Abstract
Techniques for performing DC to DC power conversion in switch-mode converter circuits include combinations of dynamic switch shedding, phase shedding, symmetric phase circuit topologies, and asymmetric phase circuit topologies. In at least one embodiment of the invention, a method of operating a power converter circuit includes operating a first phase switch circuit portion using a first number of switch devices when the power converter circuit is configured in a first mode of operation. The first number is greater than zero. The method includes operating the first phase switch circuit portion using the first number of switch devices when the power converter circuit is configured in a second mode of operation. The method includes operating a second phase switch circuit portion using a second number of switch devices when the power converter circuit is configured in the second mode of operation. The second number is greater than the first number.
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