TPS92075
- Controlled Reference Derived PFC
- Integrated Digital Phase-Angle Decoder
- Digital 50/60 Hz Synchronization
- Phase-Symmetry Balancing
- Constant LED current operation
- Fast Start-up
- Dimming Implemented Via Analog Reference Control
- Smooth Dimming Transitions
- Overvoltage Protection
- Feedback Short-Circuit Protection
- Leading and Trailing Edge Dimmer Compatibility
- Low BOM Cost and Small PCB Footprint
- Patent Pending Digital Architecture
- Available in 8-Pin SOIC and 6-Pin TSOT
The TPS92075 is a hybrid power factor controller (PFC) with a built-in phase dimming decoder. The device analyzes line cycles continuously using an internal, low-power, digital controller for shape and symmetry. The power converter stage generates an analog current reference and uses it to regulate the output current. The device uses control algorithms to manipulate the analog reference. These algorithms optimize dimmer compatibility, power factor and total harmonic distortion (THD).
Using a constant off-time control, the solution achieves low component count, high efficiency and inherently provides variation in the switching frequency. This variation creates an emulated spread spectrum effect easing the converters EMI signature and allowing a smaller input filter.
The TPS92075 also includes standard features: current limit, overvoltage protection, thermal shut-down, and VCC undervoltage lockout, all in packages
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | Non-isolated, Phase Dimmable, Buck PFC LED Driver with Digital Ref Control datasheet (Rev. B) | 2013/9/20 | |||
| 白皮書 | Common LED Functions and LED Driver Design Considerations | 2020/9/21 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 使用指南 | Using the TPS92075 Buck Converter | 2013/6/14 | ||||
| 使用指南 | Using the TPS92075 Buck-Boost EVM (Rev. A) | 2013/4/16 |
設計與開發
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TPS92075EVM2 — 非隔離式、相位可調光、降壓 PFC LED 驅動器評估模組
The TPS92075EVM2 implements a 120V buck dimming solution using the TPS92075 integrated circuit from Texas Instruments. The TPS92075 is a hybrid power factor controller with a built-in phase dimming decoder. The EVM can support applications up to ~13W and includes output at LED voltage up to 35V.
TPS92075DESIGN-CALC — TPS92075 設計計算機
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| SOT-23-THN (DDC) | 6 | Ultra Librarian |