原标题：NXP SSL5018TE 230V 18W LED T8管灯解决方案

　　nxp公司的SSL5018TE是集成了MOSFET的高压集成电路(IC)控制器,输入电压高达230V(AC),具有占位面积小,效率高达93%,功率因素大于0.95,总谐波失真(THD)小于20%,内部集成了多种保护功能,主要用在无调光的LED照明包括18W T-LED或更高功率的灯.本文介绍了SSL5018TE主要特性和优势,框图, PF>0.95驱动电路图,以及演示板SSL5018DB1124主要特性,电路图,材料清单和PCB布局图.

　　The SSL5018TE is a high-voltage Integrated Circuit (IC) controller with an integrated MOSFET for driving LED lamps in general mains non-dimmable lighting applications. The IC operates with input voltages up to 230 V (AC).

　　The main benefits of these products are:

　　• Small Printed-Circuit Board (PCB) footprint, and compact solution

　　• High efficiency (up to 93 %)

　　• High input power factor (> 0.95); Low Total Harmonic Distortion (THD; < 20 %)

　　• Intermediate power factor (PF > 0.7); low ripple (< 5 %); minimum external component count

　　• Enhanced power capability

　　• Low electronic Bill Of Material (BOM)

　　The SSL5018TE operates in Boundary Conduction Mode (BCM) with peak current modulation, providing an input power factor correction. The IC is typically configured to a buck converter. It can start up directly from the HV pin using an internal high-voltage current source. When the converter is switching, VCC is supplied through the DVDT pin by a capacitor coupled to the DRAIN pin or by an auxiliary supply. This feature simplifies the VCC supply. It allows a low-cost off-the-shelf inductor to be used, providing flexibility in application design. The IC supply current is 1.3 mA.

　　The SSL5018TE comes in a compact HSO8 package incorporating an exposed pad to enhance the thermal capability for high-power applications, like 18 W T-LEDs or higher power lamps.

　　SSL5018TE主要特性和优势:

　　 Driving LED strings from a rectified mains supply

　　 Highly integrated switch mode LED driver with integrated 600 V (DC) power switches

　　 Efficient BCM operation with:

　　 No reverse recovery losses in freewheel diode

　　 Zero Current Switching (ZCS) for turn-on of switch

　　 Zero voltage or valley switching for turn-on of switch

　　 Minimal required inductance value and size

　　 Direct PWM current regulation possible

　　 Fast transient response through peak current mode control:

　　 No overshoots or undershoots in the LED current

　　 Internal protections:

　　 UnderVoltage LockOut (UVLO)

　　 Leading-Edge Blanking (LEB)

　　 OverCurrent Protection (OCP)

　　 Internal OverTemperature Protection (OTP)

　　 Brownout protection

　　 Output Short Protection (OSP)

　　 Low BOM LED driver solution:

　　 No Schottky diode required due to ZCS

　　 Option for soft-start function

　　 Compatible with wall switches with built-in standby indicator lights

　　 IC lifetime meets and exceeds the required LED lamp lifetime

　　SSL5018TE应用:

　　The SSL5018TE is intended for low-cost mains non-dimmable LED lighting applications, including 18 W T-LEDs or higher power lamps, with a high power factor. The IC operates from 100 V (AC) or 120 V (AC) mains voltages. The output current can be modulated using a PWM signal.

　　图1. SSL5018TE框图

　　图2. SSL5018TE PF>0.95驱动电路图

　　演示板SSL5018DB1124

　　SSL5018DB1124 - 230 V/18 W T8 non-isolated buck LED driver demo board

　　This document describes the performance, technical data and the connection of the SSL5018 demo board, using non-isolated buck topology. The SSL5018 is an NXP Semiconductors driver IC in a HSO8 package, intended to provide a low cost, small form factor LED driver design. This SSL5018DB1124 demo board is designed for T8 applications. It is intended to operate at 230 V (AC), with an output voltage around 70 V.

　　演示板SSL5018DB1124主要特性:

　　• T8 LED tube application

　　• Open/short LED string protection

　　• OverCurrent Protection (OCP) and OverTemperature Protection (OTP)

　　• PF > 0.96 and THD < 19 % at nominal 230 V (AC) input

　　• Efficiency > 91 % at nominal 230 V (AC) input

　　• Compliant with IEC61000-3-2 harmonic standard

　　• Compliant with EN55015 conducted EMI

　　• PWM dimming

　　图3. 演示板SSL5018DB1124外形图

　　图4. 演示板SSL5018DB1124电路图

　　演示板SSL5018DB1124材料清单: