SWITCHING POWER SUPPLY SYSTEM, AND ASSOCIATED CONTROL CIRCUIT TO ELIMINATE FLICKER OF LED
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United States of America Patent
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Issued Date -
Jun 30, 2016
app pub date -
Dec 16, 2015
filing date -
Dec 25, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A switching power supply system has a switching circuit and a control circuit. The control circuit has an integrating circuit providing a charge signal by integrating an output current feedback signal, a charge control circuit, and a switching control circuit controlling the switching circuit based on the charge signal and a charge reference signal. The switching power supply system controls an output current stable via controlling the charge signal, so as to eliminate flicker and shimmer of a LED load with low power loss and simple circuit.
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