NXPSSL210314W可調光LED驅動方案

NXP公司的SSL2103是用于LED照明的可調光Greenchip控制器, 適合于反激和降壓配置應用.器件支持大多數的調光解決方案,具有最佳的效率,中性調光曲線可對數修正到1%,超溫保護(OTP),繞組短路保護(SWP)和過流保護(OCP).本文介紹了SSL2103主要特性和優勢,方框圖,亮度控制框圖,降壓和反激配置應用電路圖,以及SSL2103演示板主要指標,230 V (AC)14 W A55 LED 反激電路圖和材料清單.

SSL2103: Dimmable Greenchip controller for LED lighting

The SSL2103 is a Switched Mode Power Supply (SMPS) controller IC that operates in combination with a phase cut dimmer directly from the rectified mains. It is designed to drive LED devices. The device includes a circuit to allow direct start-up from the rectified mains voltage.

For dimmer applications, an 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 to:

Use an external power switch to allow the IC to provide any power

– Use an external bleeder transistors to provide extended dimmer interoperability

SSL2103主要特性和優勢:

? Easy migration to existing lighting control infrastructure

? Supports most available dimming solutions

? Optimized efficiency with valley switching managed by a built-in circuitry

? Demagnetization detection

? OverTemperature Protection (OTP)

? Short-Winding Protection (SWP) and OverCurrent Protection (OCP)

? Internal VCC generation allowing start-up from the rectified mains voltage

? Natural dimming curve by logarithmic correction, down to 1 %

? Suitable for flyback and buck applications

SSL2103應用:

? SSL applications with various power requirements

? 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亮度控制框圖

圖3.SSL2103降壓配置應用電路圖

圖4.SSL2103反激配置應用電路圖

SSL2103演示板

This user manual describes a demonstration (demo) board for evaluating an AC mains LED driver with a dimmer for 14 W, A55 LEDs using the SSL2103. It describes key features and connections to aid the design of LED drivers for typical applications.

The demo board operates from an AC mains voltage of 230 V (AC) at 50 Hz. The resulting design is a trade-off between high-power factor, efficiency and dimmer compatibility. Demo board specification.

SSL2103演示板主要指標:



圖5.SSL2103 14 W A55 LED 演示板外形圖(頂視圖)

圖6.SSL2103 14 W A55 LED 演示板外形圖(底視圖)

圖7.14 W A55 LED 演示板連接圖

圖8.SSL2103 230 V (AC)14 W A55 LED 反激電路圖

A55 14 W 230 V (AC) 演示板材料清單:


詳情請見:
http://www.nxp.com/documents/data_sheet/SSL2103.pdf
和
http://www.nxp.com/documents/user_manual/UM10507.pdf