TPS54418
- Two, 30-mΩ (typical) MOSFETs for High-Efficiency at 4-A loads
- Switching Frequency: 200 kHz to 2 MHz
- Voltage Reference Over Temperature: 0.8 V ± 1%
- Synchronizes to External Clock
- Adjustable Soft Start/Sequencing
- UV and OV Power-Good Output
- Low Operating and Shutdown Quiescent Current
- Safe Start-Up into Prebiased Output
- Cycle-by-Cycle Current Limit, Thermal and Frequency Foldback Protection
- Operating Junction Temperature Range: –40°C to 150°C
- Thermally Enhanced 3 mm × 3 mm 16-pin WQFN Package
- Create a Custom Design Using the TPS54418 With the WEBENCH® Power Designer
TheTPS54418 device is a full-featured, 6-V, 4-A, synchronous, step-down current-mode converter with two integrated MOSFETs.
The TPS54418 device enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the device footprint with a small, 3 mm x 3 mm, thermally enhanced, QFN package.
The TPS54418 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.
Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the EN pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.
Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the soft-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition.
For more SWIFT™ documentation, see the TI website at www.ti.com/swift.
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 | TPS54418 2.95-V to 6-V Input, 4-A Output, 2-MHz, Synchronous Step-Down SWIFT™ Converter datasheet (Rev. E) | PDF | HTML | 2018/4/6 | ||
| 應用說明 | Semiconductor and IC Package Thermal Metrics (Rev. D) | PDF | HTML | 2024/3/25 | |||
| 應用說明 | Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) | PDF | HTML | 2021/7/26 | |||
| 選擇指南 | Buck Converter Quick Reference Guide (Rev. B) | 2021/4/8 | ||||
| 應用說明 | Calculating Efficiency (Rev. A) | 2020/3/6 | ||||
| 應用說明 | Solve Point-of-Load Power Design Challenges: Single Board Computer Applications | 2018/8/24 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Not All Jitter Is Created Equal (Rev. A) | 2015/7/4 | ||||
| 應用說明 | Understanding Thermal Dissipation and Design of a Heatsink | 2011/5/4 | ||||
| 應用說明 | Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) | 2010/9/15 |
設計與開發
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TPS54418EVM-375 — TPS54418 3.3V 輸入、1.8V 輸出、4A SWIFT™ 評估模組
TPS54620DESIGN-CALC — TPS54620 and TPS54XXX Current-Mode Step-Down Converter Design Calculator
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RTE) | 16 | 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。