TPS54140
- 3.5- to 42-V Input Voltage Range
- 200-mΩ High-Side MOSFET
- High Efficiency at Light Loads with a
Pulse Skipping Eco-mode™ - 116-µA Operating Quiescent Current
- 1.3-µA Shutdown Current
- 100-kHz to 2.5-MHz Switching Frequency
- Synchronizes to External Clock
- Adjustable Slow Start and Sequencing
- UV and OV Power-Good Output
- Adjustable UVLO Voltage and Hysteresis
- 0.8-V Internal Voltage Reference
- MSOP10 Package With PowerPAD
- Supported by WEBENCH® Software Tool
(www.TI.com/WEBENCH)
The TPS54140 device is a 42-V, 1.5-A, step-down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load, regulated output-supply current to 116 µA. Using the enable pin, the shutdown supply current is reduced to 1.3 µA.
Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output-voltage startup ramp is controlled by the slow-start pin that can also be configured for sequencing and tracking. An open-drain power-good signal indicates the output is within 94% to 107% of the nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency foldback and thermal shutdown protects the device during an overload condition.
The TPS54140 device is available in a 10-pin thermally enhanced MSOP PowerPAD package.
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 | TPS54140 1.5-A, 42-V Step-Down DC-DC Converter With Eco-mode™ 数据表 (Rev. C) | PDF | HTML | 2014-11-14 | ||
| 应用手册 | Understanding Eco-mode(TM) Operation | 2016-12-5 | ||||
| 应用手册 | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | 2015-3-5 | ||||
| 应用手册 | Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A | 2013-4-17 | ||||
| 应用手册 | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012-10-26 | ||||
| 应用手册 | Level Shifting Control for an Inverting Buck-boost | 2012-10-10 | ||||
| EVM 用户指南 | TPS54140EVM-429 1.5 A, SWIFT Regulator Evaluation Module | 2008-3-19 |
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）。
TPS54140EVM-429 — TPS54140 42V 输入、3.3V 输出、1.5A 评估模块
SLVC432 — TPS54x40 and TPS54x60 Buck Design Spreadsheet
SWIFTINV-CALC — SWIFT™ Converter Inverting Buck/Boost Calculator
SWIFTINV-CALC Excel 表格是 SLVA317 应用手册的辅助工作表。此工作表用于计算从正输入电压生成负输出电压所需的外部组件。该工具包含了多个系列的宽输入电压，以及在反向降压/升压拓扑中的电流模式控制 SWIFT DC/DC 转换器。
SWIFTPOSNEG-CALC — TPS54160 Pos/Neg Calculation Utility Download
SWIFTPosNeg-CALC Excel 表格是 SLVA369 应用手册的辅助工作表。
此工作表用于计算使用降压开关稳压器和模拟现成的耦合电感器创建一个双路输出（即正负输出）电源所需的外部组件。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
订购和质量
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