Zero ripple single stage AC-DC LED driver with unity power factor
作者： Peng Fang , Brian White , Christopher Fiorentino , Yan-Fei Liu
DOI: 10.1109/ECCE.2013.6647155
关键词:
摘要: The single stage LED Driver can achieve relatively high efficiency, however the low frequency ripple current is too significant if power factor has been achieved. With two stages AC-DC structure, we and tight regulation at same time. However, drawback of structure efficiency component cost. In this paper, an innovative with cancellation technology proposed. We almost as cost while maintaining comparable performance to Driver. Our experimental prototype 1.5mA Pk-Pk 120Hz current, 0.99 85.5% for a universal AC input, 35W (50V-0.7A) output application.
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