ST L6574D

CFL/TL 控制器是

Overview

In order to ensure voltage ratings in excess of 600V, the L6574D is manufactured with BCD OFF LINE technology, which makes it well suited for lamp ballast applications.

The device is intended to drive two power MOSFETS, in the classical half bridge topology, ensuring all the features needed to drive and properly control a fluorescent bulb. A dedicated timing section in the L6574D allows the user set the necessary parameters for proper preheat and ignition of the lamp. Also, an OP AMP is available to implement closed loop control of the lamp current during normal lamp burning. An integrated bootstrap section, eliminating the normally required bootstrap diode and the zener clamping on Vs, makes the L6574D well suited for low cost applications where few additional components are needed to build a high performance ballast.

Features

Tube Package
Mounting type of Surface Mount
Supply voltage of 12V
Operating supply voltage of 15.6V

Surface Mount Mounting Type

Applications

There are a lot of STMicroelectronics
L6574D Lighting Controllers applications.

• Smoothing
• Decoupling or bypassing
• Noise filtering
• DC/DC, DC/AC, and AC/AC converters
• Frequency converters
• Spot welding
• Flashtube ignition
• DC link
• Motor start
• Audio crossover