SYSTEM AND METHOD FOR ESTIMATING INPUT POWER FOR A POWER PROCESSING CIRCUIT
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United States of America Patent
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Issued Date -
Dec 25, 2008
app pub date -
Dec 13, 2007
filing date -
Jun 19, 2007
priority date (Note) -
Abandoned
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Abstract
A controller for a power processing circuit and a related method of operating the same. In one embodiment, the controller includes a multiplier configured to produce a product of an input current and an input voltage of the power processing circuit. The controller also includes a low-pass filter configured to produce an input power estimate of an input power to the power processing circuit as a function of the product of the input current and the input voltage. In another embodiment, the controller is a power-factor controller and includes a voltage loop compensator configured to produce a voltage compensation signal as a function of an output voltage of the power processing circuit. The controller also includes an input power estimator configured to produce an input power estimate of an input power to the power processing circuit as a function of the voltage compensation signal.
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