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
类型 | 标题 | 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年 11月 14日 | ||
应用手册 | Understanding Eco-mode(TM) Operation | 2016年 12月 5日 | ||||
应用手册 | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | 2015年 3月 5日 | ||||
应用手册 | Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A | 2013年 4月 17日 | ||||
应用手册 | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012年 10月 26日 | ||||
应用手册 | Level Shifting Control for an Inverting Buck-boost | 2012年 10月 10日 | ||||
用户指南 | TPS54140EVM-429 1.5 A, SWIFT Regulator Evaluation Module | 2008年 3月 19日 |
设计和开发
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
SWIFTINV-CALC — SWIFT™ Converter Inverting Buck/Boost Calculator
The SWIFTINV-CALC Excel sheet is a complementary worksheet to the SLVA317 application note. The worksheet is used to calculate the external components needed to create a negative output voltage from a positive input voltage. The tool features several families of wide input voltage, current-mode (...)
支持的产品和硬件
产品
AC/DC 和 DC/DC 转换器(集成 FET)
SWIFTPOSNEG-CALC — TPS54160 Pos/Neg Calculation Utility Download
The SWIFTPosNeg-CALC Excel sheet is a complementary worksheet to the SLVA369 application note.
This worksheet is used to calculate the external components needed to create a dual output (i.e. positive and negative) power supply using a step-down switching regulator and catalog off the shelf coupled (...)
支持的产品和硬件
产品
AC/DC 和 DC/DC 转换器(集成 FET)
封装 | 引脚 | CAD 符号、封装和 3D 模型 |
---|---|---|
HVSSOP (DGQ) | 10 | Ultra Librarian |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点