NXP SSL2103可調光LED照明方案

NXP公司的SSL2103用于可調光led照明的開關電源(SMPS)控制器,是一款多用途AC/DC LED照明控制器, 具有更寬的功率適用范圍和更好的調光兼容性，令其適用于可調及不可調LED照明燈。SSL2103針對更高功率的LED照明燈具（PAR20、PAR30和PAR38）而設計，為LED燈具設計者在功率、外形尺寸及調光控制方面提供完全的靈活性。本文介紹了SSL2103主要特性和優勢, 方框圖以及降壓穩壓器配置圖和反激電源配置圖.

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主要特性和優勢:

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應用:

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.

圖1.SSL2103方框圖

圖2.SSL2103降壓穩壓器配置圖

圖3.SSL2103反激電源配置圖