COUPLED INDUCTOR DC STEP DOWN CONVERTER
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United States of America Patent
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Issued Date -
Sep 18, 2014
app pub date -
Apr 22, 2013
filing date -
Mar 15, 2013
priority date (Note) -
Abandoned
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Abstract
A step down power converter include a switch, an inductor, a diode, a capacitor, and a winding magnetically coupled to the inductor. The diode, the inductor and the capacitor are coupled in series, and the transistor, the coupled winding and the capacitor are coupled in series. An output voltage Vout is supplied across the capacitor. When the switch is ON, energy is transferred from an input supply voltage to a load coupled across the capacitor, and current flows through the coupled winding thereby storing energy in the winding. When the switch OFF, current does not flow through the coupled winding, but the energy stored in the winding induces current in the magnetically coupled inductor, thereby delivering energy from the winding to the load.
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