基于SSL1623PH設(shè)計(jì)的開關(guān)電源LED驅(qū)動(dòng)技術(shù)

本文介紹了SSL1623PH主要特性和優(yōu)勢,方框圖以及典型應(yīng)用電路圖.NXP 公司的SSL1623PH是開關(guān)電源(SMPS)控制器,能直接從通用電壓火線(80V-276V)整流電壓工作,它集成了6.5Ω和650 V的功率開關(guān),可調(diào)頻率以方便設(shè)計(jì),具有可調(diào)過流保護(hù),以及欠壓保護(hù),溫度保護(hù)和短路保護(hù),主要用在LED鎮(zhèn)流器,外觀照明,LED點(diǎn)照明以及商業(yè)照明.
SSL1623PH主要特性和優(yōu)勢:

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應(yīng)用:

LED ballasts

Contour lighting

LED spotlights

Channel letter lighting

Down lighting

Commercial lighting (retail displays)

圖1.SSL1623PH方框圖

圖2.SSL1623PH典型應(yīng)用電路圖-初級檢測