High Voltage LED Applications

　　本文介紹了如何建立高電壓電路設(shè)計(jì)采用MLX10803家用和工業(yè)用，或任何需要從發(fā)光二極管的高光層次應(yīng)用。

　　本文中描述的應(yīng)用程序用于驅(qū)動(dòng)大功率LED二極管。所描述的電路可以在其他應(yīng)用程序中使用類似的情況一樣，如果他們屬于MLX10803規(guī)格。這是一個(gè)概念性描述，在某些情況下，沒有給定的組件值。在大多數(shù)情況下，所描述的應(yīng)用程序已經(jīng)實(shí)現(xiàn)。

　　對(duì)于高壓設(shè)計(jì)來說，這不是一個(gè)微不足道的任務(wù)，在涉及到高電壓時(shí)必須非常小心。討論的例子必須精心設(shè)計(jì)和制作；微小的錯(cuò)誤會(huì)產(chǎn)生毀滅性的后果。對(duì)于沒有經(jīng)驗(yàn)或未受過訓(xùn)練的人，不推薦使用這些例子。它是為電氣和電子工程師提供相關(guān)的培訓(xùn)和經(jīng)驗(yàn)，設(shè)計(jì)和建設(shè)高壓電路。電路板必須根據(jù)高壓規(guī)則設(shè)計(jì)。根據(jù)用戶的具體實(shí)現(xiàn)，這些示例可能存在致命電壓。

　　The circuits described in this article have a very good efficiency; converting efficiencies up to 98-99% are to be expected. This makes the circuit design fairly simple in respect of thermal handling. Remember that if you design lamps with up to 100 watts and more， even 1% loss generates 1 watt， and more heat.

　　Every kind of active current regulation generates ripple on the regulated output. This ripple can generate electromagnetic radiation （EMR）， resulting in electromagnetic coupling to the surrounding electronics （EMC）。 The MLX10803 and the applications described in this article are designed to minimize EMR. Additional care has to be taken when designing the circuit board and the physical application. Melexis makes no claims about the suitability of any of these circuits for EMI/EMC and EMR compliance against international regulations. Compliance testing is recommended and it will fall to the user to conduct such testing prior to sale in specific countries and markets.