NXPSSL210314W可调光LED驱动方案

作者：时间：2012-03-23来源：网络收藏

NXP公司的SSL2103是用于LED照明的可调光Greenchip控制器, 适合于反激和降压配置应用.器件支持大多数的调光解决方案,具有最佳的效率,中性调光曲线可对数修正到1%,超温保护(OTP),绕组短路保护(SWP)和过流保护(OCP).本文介绍了SSL2103主要特性和优势,方框图,亮度控制框图,降压和反激配置应用电路图,以及SSL2103演示板主要指标,230 V (AC)14 W A55 LED 反激电路图和材料清单.

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主要特性和优势:

 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应用:

 SSL applications with various power requirements

 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亮度控制框图

图3.SSL2103降压配置应用电路图

图4.SSL2103反激配置应用电路图

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演示板主要指标: