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        LED 1-5W驅動解決方案

        作者: 時間:2011-12-11 來源:網絡 收藏


        材料清單(BOM):



        圖5.NCP3065降壓演示板應用電路(2)

        材料清單(BOM):


        MR16 GreenPoin

        This reference document describes a built and tested, GreenPoint® solution for a 1 to 5W driver for MR16 replacement. The circuit is proposed for driving HB--LED (high--brightness LED) in a variety of lighting applications but is configured in size and features for an MR16 LED replacement. Configurations like this are found in 12 Vac / 12 Vdc track lighting applications, automotive applications, and low voltage AC landscaping applications as well as task lighting such as under--cabinet lights and desk lamps that might be powered from standard off--the—shelf Vac wall adapters.

        The circuit is based around the ON Semiconductor NCP3065 operating at ~150 kHz in a non—isolated configuration. A key consideration in this design was achieving flat current regulation across input line variation and output voltage variation with a 12 Vac input. It also features an auto--detect circuit in combination with the NCP3065 which allows input from a 12 Vdc or 12 Vac supply and still maintain targeted output current regulation.

        圖6. MR16 LED方框圖

        圖7. MR16 LED器外形圖

        圖8.1-5W MR16 LED驅動器電路圖

        材料清單:

        本文引用地址:http://www.104case.com/article/168767.htm

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        關鍵詞: 解決方案 驅動 1-5W LED

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