SWITCHING CONTROLLING CIRCUIT, CONVERTER USING THE SAME, AND SWITCHING CONTROLLING METHOD
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United States of America Patent
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Issued Date -
Apr 14, 2016
app pub date -
Jul 30, 2015
filing date -
Oct 8, 2014
priority date (Note) -
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Abstract
The converter includes: a switching unit; an energy storing unit storing energy from direct current input power and then generating an output voltage according to a switching operation of the switching unit; and a switching controlling unit turning on the switching unit when a voltage between one end of the switching unit and the other end thereof reaches a zero point of a resonance waveform, wherein the switching controlling unit includes: a voltage detecting unit detecting the voltage one end of the switching unit and the other end thereof in case of a resonance waveform; a first comparator comparing the voltage detected by the voltage detecting unit with a predetermined first reference voltage corresponding to the zero point of the resonance waveform and outputting a first signal according to a comparison result; and a switching driving unit turning on the switching unit in response to the first signal.
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