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| TPS92410 230V離線LED照明參考設計 |
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| 文章來源： 更新時間：2014/10/27 14:14:00 |
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TI公司的TPS92410是能簡化離線LED照明設計的450V線性控制器,具有良好的PFC,線性穩壓和低THD性能,輸入電壓從9.5V到450V,和相位調光兼容,可編程過壓保護,不需要電感,主要用在LED驅動器和LEC燈替代.本文介紹了TPS92410主要特性,框圖, 簡化應用電路圖,120V和230V應用電路,以及TPS92410EVM-002評估模塊主要特性和電指標,電路圖,材料清單和PCB設計圖.
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
圖1. TPS92410框圖
圖2. TPS92410簡化應用電路圖
圖3. TPS92410 120V應用電路圖
圖4. TPS92410 230V應用電路圖
TPS92410EVM-002評估模塊
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評估模塊主要特性:
Triac Dimmer Compatible LED Driver
230VAC Nominal Input
High Power Factor
Smooth Dimming
Small Form Factor
圖5. TPS92410EVM-002評估模塊外形圖
TPS92410EVM-002評估模塊電性能指標:
圖6. TPS92410EVM-002評估模塊電路圖
TPS92410EVM-002評估模塊材料清單:
圖7. TPS92410EVM-002評估模塊PCB設計圖(1)
圖8. TPS92410EVM-002評估模塊PCB設計圖(2) |
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