METHOD AND APPARATUS FOR A POWER SUPPLY CONTROLLER RESPONSIVE TO A FEEDFORWARD SIGNAL
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United States of America Patent
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app pub date -
Apr 2, 2013
filing date -
Oct 4, 2006
priority date (Note) -
Abandoned
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Abstract
An example power converter includes an energy transfer element, a switch, a feedback circuit, a feedforward circuit, and an integrated circuit controller. The integrated circuit controller includes a gain selector circuit and a switch duty cycle controller. The gain selector circuit selects a gain multiplier according to a value of a feedforward signal generated by the feedforward circuit and applies the gain multiplier to the feedforward signal to generate a duty cycle adjust signal. The switch duty cycle controller generates a drive signal to control the switch in response to a feedback signal generated by the feedback circuit. A duty cycle of the drive signal is varied in response to the duty cycle adjust signal such that the duty cycle varies according to a plurality of linear functions over a range of values of the feedforward signal.
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