AC-TO-DC POWER CONVERTING DEVICE
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United States of America Patent
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Issued Date -
Oct 22, 2015
app pub date -
Apr 22, 2014
filing date -
Apr 22, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A power converting device includes a filter filtering an AC input voltage to generate a filtered voltage, a power factor corrector boosting the filtered voltage to generate a boosted voltage, and a step-down converter reducing the boosted voltage to generate a DC output voltage. The power factor corrector includes a capacitor, an inductor, two diodes and two switches. The inductor has a first terminal coupled to the filter, and a second terminal. The diodes are coupled in series across the capacitor. A common node between the diodes is coupled to the second terminal of the inductor. The switches are coupled in series across the capacitor. A voltage across one of the switches serves as the boosted voltage.
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