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Single stage Flyback converter with active power factor correction (PFC) function built-in is very popular for low power LED driver application. However, a universal driver design (120V∼277Vac wide input) for meeting PF>0.90 and THD<20% at 50% of maximum output power remains very challenging using peak current transition mode (PCTM) PFC control. Therefore, in this paper, a novel and practical...
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