原标题：NXP SSL2101 LED反激驱动解决方案

　　nxp公司的SSL2101是120VAC LED反激驱动器,能直接工作在火线电压整流器,器件包括高压功率开关,以及直接从火线电压整流器起动的电路.支持大多数调光方案,内置了超温保护(OTP),过流保护(OCP)和绕组短路保护(SWP),主要用在高达10W的装饰灯如GU10,LED驱动器,高达15W的LED串以及1W-10W的LED灯.本文介绍了SSL2101主要特性, 方框图, 反激电路图(230V TRIAC适用)以及SSL2101光参考板主要指标,电路图和材料清单.

　　UM10477: SSL2101 120 V (AC) flyback task light 20 V/450 mA driver board

　　The SSL2101 is a Switched Mode Power Supply (SMPS) controller IC that operates in combination with a phase cut dimmer directly from rectified mains. It is designed to drive LED devices. The device includes a high-voltage power switch and a circuit to allow start-up directly from the rectified mains voltage. Furthermore the device includes high-voltage circuitry to supply the phase cut dimmer.

　　SSL2101主要特性:

　　Easy migration to existing lighting control infrastructure, triac and transistor dimmers

　　Supports majority of available dimming solutions

　　Valley switching efficiency is optimized by built-in dedicated circuitry

　　Built-in demagnetization detection

　　The IC has built-in OverTemperature Protection (OTP)

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

　　The IC has internal VCC generation that allows start-up from rectified mains voltage

　　Natural dimming curve by logarithmic correction

　　SSL2101应用:

　　The SSL2101 is suitable for different power requirements, these include:

　　Retro-fit lamps, e.g. GU10, up to a maximum of 10 W

　　LED modules, separate power supplies, e.g. LED spots, down-lights, up to a maximum of 15 W

　　LED strings, e.g. retail display, up to a maximum of 15 W

　　Mains isolated LED drivers up to 10 W to 15 W (flyback topology)

　　Non mains isolate LED drivers (buck topology) with a maximum peak current of 900 mA and continuous LED current below 450 mA

　　LED lamps 1 W to 10 W (flyback) or 450 mA (buck)

　　图1. SSL2101方框图

　　图2. SSL2101降压配置图

　　图3. SSL2101反激配置图

　　图4. SSL2101反激电路图(230V TRIAC适用)

　　SSL2101光参考板

　　The SSL2101 task light board is a 120 V (AC), dimmable, 450 mA LED driver board. It employs a flyback converter to drive power LEDs that require galvanic isolation. The board is designed to highlight high performance dimming, wide dimmer compatibility, high efficiency and the capability of driving various numbers of LEDs.

　　图5. SSL2101参考板外形图

　　SSL2101光参考板指标:

　　图6. SSL2101驱动板连接图

　　图7. SSL2101参考板电路图

　　SSL2101参考板材料清单(BOM):