計算工具
TPS54040
- 3.5-V 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/Sequencing
- UV and OV Power Good Output
- Adjustable UVLO Voltage and Hysteresis
- 0.8-V Internal Voltage Reference
- MSOP10 Package With PowerPAD™
- Supported by SwitcherPro Software Tool
(http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
The TPS54040 device is a 42-V, 0.5-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, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.
Under voltage 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/tracking. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.
The TPS54040 is available in 10-pin thermally enhanced HVSSOP PowerPAD package.
技術文件
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檢視所有 8 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS54040 0.5-A, 42-V Step Down DC/DC Converter with Eco-Mode™ datasheet (Rev. B) | PDF | HTML | 2016年 1月 15日 |
| Application note | Understanding Eco-mode(TM) Operation | 2016年 12月 5日 | ||
| Application note | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | 2015年 3月 5日 | ||
| Application note | Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A | 2013年 4月 17日 | ||
| Application note | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012年 10月 26日 | ||
| Application note | Level Shifting Control for an Inverting Buck-boost | 2012年 10月 10日 | ||
| White paper | Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) | 2012年 3月 28日 | ||
| EVM User's guide | TPS54040EVM-456 0.5-A, SWIFT™ Regulator Evaluation Module | 2009年 3月 20日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
開發板
TPS54040EVM-456 — TPS54040 42V 輸入、5V 輸出、0.5A 評估模組
The TPS54040EVM-456 evaluation module is designed to demonstrate the small printed-circuit-board areas that can be achieved when designing with the TPS54040 regulator. The TPS54040 dc/dc converter is designed to provide up to a 0.5-A output from an input voltage source of 3.5 V to 42 V. Rated (...)
使用指南: PDF
計算工具
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 (...)
支援產品和硬體
產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
計算工具
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 (...)
支援產品和硬體
產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點