SSL2103可调光LED照明控制器IC的主要特性及应用原理说明>>深圳市永阜康电子有限公司

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