原标题：NXP SSL2103多用途AC-DC LED照明解决方案

　　nxp 公司的SSL2103是多用途开关电源(SMPS)控制器，是一款多用途AC/DC LED照明控制器，具有更宽的功率适用范围和更好的调光兼容性，令其适用于可调及不可调LED照明灯，SSL2103在正常工作温度下的寿命可以超过75000小时。主要应用于100V、110V或230V的交流电源网络，电路板外形尺寸可以应用于E27、GU10或者PARx 灯。本文介绍了SSL2103主要特性和优势，方框图以及降压和反激配置框图。

　　SSL2103： SMPS controller IC for dimmable LED lighting

　　SSL2103 is a Switched Mode Power Supply (SMPS) controller IC designed for LED lighting applications. It is an extension of the NXP SSL2101/SSL2102 product platform,allowing easy design of derivative applications.

　　When used in combination with a phase cut dimmer connected directly to a rectified mains, it provides dimmability to the application.In dimmer applications, integrated dedicated circuitry optimizes the dimming curve.

　　• SSL2101: fully integrated LED driver for lamps up to 10 W

　　• SSL2102: fully integrated LED driver for lamps up to 25 W

　　• SSL2103: gives the application designer flexibility permitting the:

　　– control of an external power switch to allow the IC to provide any power

　　– control of external bleeder transistors to provide extended dimmer interoperability

　　The device includes a circuit that allows start-up directly from the rectified mains voltage.

　　SSL2103主要特性和优势：

　　Easy migration to existing lighting control infrastructures, TRIAC and transistor dimmers

　　Compatible with most dimming solutions

　　Optimized efficiency with valley switching managed by built-in circuitry

　　Built-in demagnetization detection

　　Built-in OverTemperature Protection (OTP)

　　Short-Winding Protection (SWP) and OverCurrent Protection (OCP)

　　Internal VCC generation allowing start-up from rectified mains voltage

　　Natural dimming curve by logarithmic correction, optimized for human eye response, down to 1 %

　　SSL2103应用：

　　The SSL2103 is suitable for various power requirements including:

　　Retro-fit lamps

　　LED modules such as LED spots and down-lights

　　LED strings suitable for retail displays etc.

　　图1。SSL2103方框图

　　图2。SSL2103降压配置框图

　　图3。SSL2103反激配置框图