Boost converter maximal output power detector allowing optimal dynamic duty-cycle limitation
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United States of America Patent
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Mar 13, 2018
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Dec 18, 2015
filing date -
Dec 18, 2015
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Abstract
A method and apparatus for detecting a critical duty cycle that maximizes an output power of a boost converter is provided. In the method and apparatus, the boost converter may be operated at or below the critical duty cycle. In the method and apparatus, a first voltage that is a function of an output voltage of a boost converter and voltage drops across a first set of parasitic resistances of the boost converter is detected. A second voltage that is a function voltage drops across a second set of parasitic resistances of the boost converter is also detected. The voltages are compared to determine the critical duty cycle and the boost converter is operated in accordance with a duty cycle that does not exceed the critical duty cycle.
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