NXP 公司的SSL1623PH是開關電源(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，可調頻率以方便設計，具有可調過流保護，以及欠壓保護，溫度保護和短路保護，主要用在LED鎮流器，外觀照明，LED點照明以及商業照明。本文介紹了SSL1623PH主要特性和優勢，方框圖以及典型應用電路圖。

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 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. 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

SSL1623PH應用：

LED ballasts

Contour lighting

LED spotlights

Channel letter lighting

Down lighting

Commercial lighting (retail displays)

圖1.SSL1623PH方框圖

圖2.SSL1623PH典型應用電路圖-初級檢測