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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
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 ICdesigned for LED lighting applications. It is an extension of theNXP SSL2101/SSL2102 product platform,allowing easy design ofderivative applications.When used in combination with a phase cutdimmer connected directly to a rectified mains, it providesdimmability to the application.In dimmer applications, integrateddedicated 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 permittingthe:
control of an external power switch to allow the IC to provide anypower
control of external bleeder transistors to provide extended dimmerinteroperability

SSL2103主要特性和优势:
Easy migration to existing lighting control infrastructures, TRIACand transistor
dimmers
Compatible with most dimming solutions
Optimized efficiency with valley switching managed by built-incircuitry
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 mainsvoltage
Natural dimming curve by logarithmic correction, optimized forhuman eye response,
down to 1 %

SSL2103应用:
The SSL2103 is suitable for various power requirementsincluding:
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  

文章来源于：http://www.szczkjgs.com/news_show_145675.htm
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