TPS54140A
- 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™ - Tighter Enable Threshold than TPS54140 for
More Accurate UVLO Voltage - Adjustable UVLO Voltage and Hysteresis
- 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
- 0.8-V Internal Voltage Reference
- MSOP10 and 3-mm × 3-mm VSON-10 Package
With PowerPAD™ - Supported by WEBENCH® and SwitcherPro™
Software Tool
The TPS54140A 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, 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/tracking. An open drain power good signal indicates the output is within 94% 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.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS54140A 1.5-A, 42-V Step-Down DC/DC Converter with Eco-mode™ datasheet (Rev. C) | PDF | HTML | 2015/10/28 | ||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Understanding Eco-mode(TM) Operation | 2016/12/5 | ||||
| 應用說明 | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | 2015/3/5 | ||||
| 應用說明 | Methods to Improve Low Dropout Operation with the TPS54240 and TPS54260 (Rev. A) | 2013/11/6 | ||||
| 應用說明 | Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A | 2013/4/17 | ||||
| 應用說明 | Level Shifting Control for an Inverting Buck-boost | 2012/10/10 |
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)。
TPS54140EVM-429 — TPS54140 42V 輸入、3.3V 輸出、1.5A 評估模組
SLVC432 — TPS54x40 and TPS54x60 Buck Design Spreadsheet
TIDA-010025 — 配備光學模擬輸入閘極驅動器，且適用於 200-480 VAC 驅動器的三相逆變器參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
| VSON (DRC) | 10 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。