亚洲日本精品国产一区vr-国产在线观看免费麻豆-免费在线毛片-久久黄色小视频-韩国主播av福利一区二区-亚洲色大成网站www永久麻豆-夜夜小视频-欧美xxxx69-91视频在线国产-国模雨珍浓密毛大尺度150p-人人妻人人澡人人爽人人精品97-免费人成视频网站在线观看18-天堂色网-久久亚洲影视-禁久久精品乱码-免费欧美视频-男女啪啪进出阳道猛进-国产精品偷拍-久久精品2019中文字幕-亚洲欧美亚洲

This application note describes a relatively novel and simple way to produce an off-line, power factor corrected 15 Vdc and higher output power supply using an isolated, single stage conversion topology. The power topology is essentially a buck-boost derived flyback converter operating in continuous conduction mode (CCM) and utilizing ON Semiconductor’s NCP1652A controller which was designed specifically for this implementation. The power supply described in this application note is a 48 Vdc, 2 A supply with universal AC input and is intended for general purpose supplies, telecom distributed power “front-ends” and constant voltage LED drivers such as those used in area lighting and distributed lighting applications such as refrigerator case lighting and cove lighting. Efficiencies approaching 90% were achieved with a power factor exceeding 0.95 for most typical loads. The supply includes overcurrent protection, overvoltage protection, brownout detection, and an input EMI filter.