Soft-start switching power converting apparatus with pulse-frequency modulation technique
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United States of America Patent
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Dec 1, 2015
Grant Date -
Sep 3, 2015
app pub date -
May 15, 2015
filing date -
Jul 5, 2013
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Abstract
A switching power converting apparatus includes a voltage conversion module, a detecting unit, and a switching signal generating unit. The voltage conversion module converts an input voltage into an output voltage associated with a secondary side current, which flows through a secondary winding of a transformer and is generated based on a switching signal. The detecting unit generates a detecting signal based on the output voltage and a predetermined reference voltage. The switching signal generating unit generates the switching signal based on the detecting signal and an adjusting signal so that the secondary side current is gradually increased during a start period of the switching power converting apparatus.
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