NXPSSL1623PH开关电源LED驱动方案.docx

NXP SSL1623PH开关电源LED驱动方案 关键词：电源管理, 开关电源,LED驱动器 NXP 公司的SSL1623PH是开关电源(SMPS)控制器,能直接从通用电压火线(80V-276V)整流电压工作,它集成了6.5Ω和650 V的功率开关,可调频率以方便设计,具有可调过流保护,以及欠压保护,温度保护和短路保护,主要用在LED镇流器,外观照明,LED点照明以及商业照明.本文介绍了SSL1623PH主要特性和优势,方框图以及典型应用电路图.The SSL1623PH is a Switched Mode Power Supply (SMPS) controller IC that operates directly from the rectified universal AC mains. It is implemented in the high voltage Easy High Voltage Silicon-On-Insulator (EZ-HV SOI) process, combined with a low voltage Bipolar Complementary Metal Oxide Semiconductor (BiCMOS) process.The device includes a high voltage power switch and a start-up circuit that operates directly from the rectified mains voltage. A dedicated circuit for valley switching is built in, which makes a very efficient slim-line electronic LED driver concept possible.The SSL1623PH can operate in LED applications with a power range of up to 25 W. Applications below 15 W are more suited to the SSL152x family of mains LED drivers. In its most basic version of application the SSL1623PH acts as a voltage source. Here no additional secondary electronics are required. A combined voltage and current source can be realized with minimum costs for external components. Implementation of the SSL1623PH renders an efficient and low cost LED power supply system.SSL1623PH主要特性和优势:Integrated power switch: 6.5 Ω and 650 VOperates from universal AC mains supplies, 80 V to 276 VAdjustable frequency for flexible designRC oscillator for load insensitive regulation loop constantValley switching for minimum switch-on lossAdjustable overcurrent protectionUndervoltage protectionTemperature protectionShort-circuit winding protectionSafe restart mode for system fault conditionsSimple application with both primary and secondary (opto) feedback16-pin DIP packageSSL1623PH应用:LED ballastsContour lightingLED spotlightsChannel letter lightingDown lightingCommercial lighting (retail displays) AO-Electronics 傲壹电子 官网： 中文网： 图1