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SSL2103可调光LED照明控制器IC的主要特性及应用原理说明
发布时间：2011/1/25 0:05:00 来源：
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NXP公司的SSL2103用于可调光LED照明的开关电源(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针对更高功率的LED照明灯具（PAR20、PAR30和PAR38）而设计，为LED灯具设计者在功率、外形尺寸及调光控制方面提供完全的灵活性。本文介绍了SSL2103主要特性和优势, 方框图以及降压稳压器配置图和反激电源配置图.
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 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降压稳压器配置图  图3.SSL2103反激电源配置图 |
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