原标题：TI TPS92410 230V离线LED照明参考设计

　　TI公司的TPS92410是能简化离线LED照明设计的450V线性控制器,具有良好的PFC,线性稳压和低THD性能,输入电压从9.5V到450V,和相位调光兼容,可编程过压保护,不需要电感,主要用在LED驱动器和LEC灯替代.本文介绍了TPS92410主要特性,框图, 简化应用电路图,120V和230V应用电路,以及TPS92410EVM-002评估模块主要特性和电指标,电路图,材料清单和PCB设计图.

　　TI new 450-V linear controller simplifies offline LED lighting design

　　The TPS92410 is an advanced linear driver with high voltage start-up intended for use in low power, offline LED lighting applications. It can be used to regulate the average LED current through LEDs in conjunction with the TPS92411 direct drive switch.

　　The TPS92410 features a reference voltage that can be used to set the current level as well as the thermal foldback threshold. A multiplier is included to obtain excellent power factor while maintaining good line regulation. Other features include under-voltage lockout, over-voltage protection, forward phase dimmer detection with change to constant current mode, thermal foldback, and thermal shutdown.

　　TPS92410主要特性:

　　Multiplier for Good PFC, Line Regulation, and Low THD

　　VIN Range From 9.5 V to 450 V

　　Compatible with Phase Dimmers

　　Analog Dimming Input with LED Turn-Off

　　Programmable Overvoltage Protection

　　Precision 3-V Reference

　　Thermal Foldback

　　Thermal Shutdown

　　No Inductor Required

　　13 Pin, High-Voltage, SOIC Package

　　Related end equipment

　　LED Drivers

　　LED Light Bulb Replacement

　　图1. TPS92410框图

　　图2. TPS92410简化应用电路图

　　图3. TPS92410 120V应用电路图

　　图4. TPS92410 230V应用电路图

　　TPS92410EVM-002评估模块

　　The TPS92410VEVM implements a 230V linear regulator dimming solution using the TPS92410 and TPS92411 integrated circuits from Texas Instruments. The TPS92410 is a linear controller with analog dimming functionality, thermal foldback, and a mode switch function to improve compatibility with phase dimmers. The EVM can support applications up to ~12W.

　　TPS92410EVM-002评估模块主要特性:

　　Triac Dimmer Compatible LED Driver

　　230VAC Nominal Input

　　High Power Factor

　　Smooth Dimming

　　Small Form Factor

　　图5. TPS92410EVM-002评估模块外形图

　　TPS92410EVM-002评估模块电性能指标:

　　TPS92410EVM-002评估模块材料清单: