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.
技術文檔
| 類型 | 標題 | 下載最新的英語版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 數據表 | TPS54140 1.5-A, 42-V Step-Down DC-DC Converter With Eco-mode? 數據表 (Rev. C) | PDF | HTML | 2014年 11月 14日 | ||
| 應用手冊 | Understanding Eco-mode(TM) Operation | 2016年 12月 5日 | ||||
| 應用手冊 | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | 2015年 3月 5日 | ||||
| 應用手冊 | Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A | 2013年 4月 17日 | ||||
| 應用手冊 | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012年 10月 26日 | ||||
| 應用手冊 | Level Shifting Control for an Inverting Buck-boost | 2012年 10月 10日 | ||||
| 用戶指南 | TPS54140EVM-429 1.5 A, SWIFT Regulator Evaluation Module | 2008年 3月 19日 |
設計和開發
如需其他信息或資源,請點擊以下任一標題進入詳情頁面查看(如有)。
TPS54140EVM-429 — TPS54140 42V 輸入、3.3V 輸出、1.5A 評估模塊
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 (...)
支持的產品和硬件
產品
AC/DC 和 DC/DC 轉換器(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 (...)
支持的產品和硬件
產品
AC/DC 和 DC/DC 轉換器(集成 FET)
| 封裝 | 引腳 | CAD 符號、封裝和 3D 模型 |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
訂購和質量
- RoHS
- REACH
- 器件標識
- 引腳鍍層/焊球材料
- MSL 等級/回流焊峰值溫度
- MTBF/時基故障估算
- 材料成分
- 鑒定摘要
- 持續可靠性監測
- 制造廠地點
- 封裝廠地點
推薦產品可能包含與 TI 此產品相關的參數、評估模塊或參考設計。