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NXP公司的SSL2103用于可調(diào)光LED照明的開關(guān)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(diào)光兼容性，令其適用于可調(diào)及不可調(diào)LED照明燈。SSL2103針對更高功率的LED照明燈具（PAR20、PAR30和PAR38）而設(shè)計，為LED燈具設(shè)計者在功率、外形尺寸及調(diào)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(yōu)勢, 方框圖以及降壓穩(wěn)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(yōu)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(yīng)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(wěn)壓器配置圖

圖3.SSL2103反激電源配置圖

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