Transition mode power factor correction device with built-in automatic total harmonic distortion reduction feature
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United States of America Patent
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Mar 6, 2012
Grant Date -
Sep 30, 2010
app pub date -
Mar 25, 2009
filing date -
Mar 25, 2009
priority date (Note) -
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Abstract
A controller for reducing the harmonics contents in the AC-to-DC converter that is capable of minimizing THD due to crossover distortion. The controller can approximate the shape of the current running through boost inductor to the sinusoidal waveform of the rectified line input voltage and in the meantime to keep the valley of rectified sinusoidal waveform line voltage close to local ground value. The controller can be used in a transition mode power factor correction device suitable for a wide range of AC line input voltage and output loading application.
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