原标题：基于ST HVLED815PF的10W LED驱动方案

友尚制作10W LED driver评估板,采用ST HVLED815PF作为主要的控制器,以达到驱动LED的功能。ST HVLED815PF是以准谐振为拓扑,内建800V/6Ω MOSFET,并以一次侧线圈感应方式(PSR)来调节输出,可节省一颗光耦合器的成本和增加PCB的利用空间,并实现高功率因子>0.9、最高效率高达84%及定电流输出精度为±3%的能力。

场景应用图

产品实体图

展示板照片

方案方块图

核心技术优势

1.准谐振(QR)操作

2.内建800V/6Ω MOSFET

3.内建高压启动

4.一次侧线圈调节输出,无需光耦合器

方案规格

1.高功率因子能力>0.9

2.LED定电流输精度为±3%

3.功率最大可达15W@230Vac

技术文档

【HVLED815PF】

Off-line LED driver with primary-sensing and high power factor up to 15W

The HVLED815PF device is a high voltage primary switcher intended for operating directly from the rectified mains with minimum external parts and enabling high power factor (> 0.90) to provide an efficient, compact and cost effective solution for LED driving. It combines a high-performance low voltage PWM controller chip and an 800 V, avalanche rugged Power MOSFET, in the same package. There is no need for the optocoupler thanks to the patented primary sensing regulation (PSR) technique. The device assures protection against LED string fault (open or short).

Key Features

High power factor capability (> 0.9)

800 V, avalanche rugged internal 6 Ω Power MOSFET

Internal high voltage startup

Primary sensing regulation (PSR)

± 3% accuracy on constant LED output current

Quasi-resonant (QR) operation

Optocoupler not needed

Open or short LED string management

Automatic self supply