TPS54308
- 4.5-V to 28-V wide input voltage range
- Integrated 85-mΩ and 40-mΩ MOSFETs for 3-A, continuous output current
- Low 2-µA shutdown, 300-µA quiescent current
- Internal 5-mS soft start
- Fixed 350-kHz switching frequency
- Peak current mode control
- Internal loop compensation
- Overcurrent protection for both MOSFETs with hiccup mode protection
- Overvoltage protection
- Thermal shutdown
- SOT-23 (6) package
- Create a custom design using the TPS54308 with the WEBENCH Power Designer
The TPS54308 is a 4.5-V to 28-V input voltage range, 3-A synchronous buck converter. The device includes two integrated switching FETs, internal loop compensation, and 5-ms internal soft start to reduce component count.
By integrating the MOSFETs and employing the SOT-23 package, the TPS54308 achieves high power density and offers a small footprint on the PCB.
The TPS54308 operates in force continuous conduction mode (FCCM) during light load conditions. The switching frequency is maintained at an almost constant level over entire load range.
Cycle-by-cycle current limit in both high-side MOSFETs protects the converter in an overload condition and is enhanced by a low-side MOSFET freewheeling current limit, which prevents current runaway. Hiccup mode protection is triggered if the overcurrent condition has persisted for longer than the present time.
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 | TPS54308 4.5-V to 28-V Input, 3-A Output, Synchronous 350-kHz FCCM Step-Down Converter in SOT23 Package datasheet (Rev. A) | PDF | HTML | 2021/4/16 | ||
| 應用說明 | Peak Current Mode Converter Secondary Stage Filter Design for Low Ripple Power – Part I: Filter Design for Out | PDF | HTML | 2024/2/27 | |||
| 應用說明 | Peak Current Mode Converter Secondary Stage Filter Design for Low Ripple Power – Part II: Hybrid Sense Network | PDF | HTML | 2024/2/27 | |||
| 選擇指南 | Buck Converter Quick Reference Guide (Rev. B) | 2021/4/8 | ||||
| 應用說明 | Designing a Simple and Low-Cost Flybuck Solution With the TPS54308 (Rev. A) | 2019/10/14 | ||||
| 應用說明 | Using the TPS54x02 to Create an Inverting Power Supply | 2018/6/15 |
設計與開發
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TPS54308EVM-876 — TPS54308 4.5V 至 28V 輸入、3A 輸出同步降壓轉換器評估模組
TPS54308EVM-876 評估模組 (EVM) 設計為展示採用 TPS54308 穩壓器設計時可實現的精簡印刷電路板面積。切換頻率在內部設定為 340kHz。TPS54308 封裝內部採用高端和低端 MOSFET 以及閘極驅動器電路。MOSFET 的低汲極至源極導通電阻使 TPS54308 能夠實現高效率,並有助於在高輸出電流下保持低接面溫度。補償元件已整合於積體電路 (IC) (...)
SLUC685 — TPS54308 Design Calculator
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23-THN (DDC) | 6 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。