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| TPS92410 230V离线LED照明参考设计 |
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| 文章来源： 更新时间：2014/10/27 14:14:00 |
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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:
图6. TPS92410EVM-002评估模块电路图
TPS92410EVM-002评估模块材料清单:
图7. TPS92410EVM-002评估模块PCB设计图(1)
图8. TPS92410EVM-002评估模块PCB设计图(2)
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