TPS54218
- Two, 30-mΩ (typical) MOSFETs for high-efficiency at 2-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 TPS54218 with the WEBENCH® Power Designer
TheTPS54218 device is a full-featured, 6-V, 2-A, synchronous, step-down current-mode converter with two integrated MOSFETs.
The TPS54218 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 × 3-mm, thermally-enhanced QFN package.
The TPS54218 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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPS54218 2.95-V to 6-V Input, 2-A Output, 2-MHz, Synchronous Step-Down SWIFT™ Converter 数据表 (Rev. F) | PDF | HTML | 2020-5-4 | ||
| 应用手册 | 半导体和 IC 封装热指标 (Rev. D) | PDF | HTML | 英语版 (Rev.D) | PDF | HTML | 2024-4-24 | |
| 应用手册 | 适用于可编程逻辑控制器系统的降压转换器电源解决方案 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2021-8-12 | |
| 应用手册 | Improving Efficiency at Higher Loads with High Switching Frequencies | PDF | HTML | 2021-6-16 | |||
| 选择指南 | Buck Converter Quick Reference Guide (Rev. B) | 2021-4-8 | ||||
| 应用手册 | Calculating Efficiency (Rev. A) | 2020-3-6 | ||||
| 选择指南 | SWIFT DC/DC Converters Selector Guide (Rev. G) | 2019-2-6 | ||||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 技术文章 | How to get started with current sense amplifiers – part 2 | PDF | HTML | 2015-5-26 | |||
| 应用手册 | Understanding Thermal Dissipation and Design of a Heatsink | 2011-5-4 | ||||
| 应用手册 | Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) | 2010-9-15 | ||||
| EVM 用户指南 | TPS54218EVM-511 2-A, SWIFT Regulator Evaluation Module | 2009-9-23 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
TPS54218EVM-511 — TPS54218 6V 输入、1.8V 输出、2A SWIFT™ 转换器评估模块
TPS54620DESIGN-CALC — TPS54620 and TPS54XXX Current-Mode Step-Down Converter Design Calculator
TIDA-010057 — 超声波智能探头电源参考设计
TIDA-010269 — 手持式超声波成像设备电源参考设计
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| WQFN (RTE) | 16 | Ultra Librarian |
订购和质量
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