METHOD AND APPARATUS FOR ON/OFF CONTROL OF A POWER CONVERTER
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United States of America Patent
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Issued Date -
Feb 6, 2014
app pub date -
Oct 15, 2013
filing date -
Apr 6, 2007
priority date (Note) -
Abandoned
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Abstract
A power converter includes an energy transfer element coupled between a power converter input and a power converter output. A power switch is coupled to the energy transfer element and the power converter input. A feedback sampling circuit is coupled to receive a feedback signal representative of the power converter output to generate at least one feedback signal sample during each switching cycle. A switch conduction scheduling circuit is coupled to set a number of enabled cycles and a number of disabled cycles of the power switch in a plurality of future switching cycles in response to the feedback signal samples for each present switching cycle and one or more past switching cycles. A switch conduction control circuit is coupled to enable or disable conduction of the power switch during a switching cycle to control an amount of energy transferred from the power converter input to the power converter output.
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