SSL1623PH開關(guān)電源LED驅(qū)動方案

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,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點照明以及商業(yè)照明.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.

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
詳情請見:
http://www.nxp.com/documents/data_sheet/SSL1623PH.pdf