基于SSL1623PH设计的开关电源LED驱动技术

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.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.
SSL1623PH主要特性和优势:

Integrated power switch: 6.5 Ω and 650 V

Operates from universal AC mains supplies, 80 V to 276 V

Adjustable frequency for flexible design

RC oscillator for load insensitive regulation loop constant

Valley switching for minimum switch-on loss

Adjustable overcurrent protection

Undervoltage protection

Temperature protection

Short-circuit winding protection

Safe restart mode for system fault conditions

Simple application with both primary and secondary (opto) feedback

16-pin DIP package

SSL1623PH应用:

LED ballasts

Contour lighting

LED spotlights

Channel letter lighting

Down lighting

Commercial lighting (retail displays)

图1.SSL1623PH方框图

图2.SSL1623PH典型应用电路图-初级检测