現在提供此產品的更新版本
TPS54541
- High Efficiency at Light Loads with Pulse Skipping Eco-mode™
- 87-mΩ High-Side MOSFET
- 152-µA Operating Quiescent Current and 2-µA Shutdown Current
- 100-kHz to 2.5-MHz Adjustable Switching Frequency
- Synchronizes to External Clock
- Low Dropout at Light Loads with Integrated BOOT Recharge FET
- Adjustable UVLO Voltage and Hysteresis
- UV and OV Power-Good Output
- Adjustable Soft-Start and Sequencing
- 0.8-V 1% Internal Voltage Reference
- 10-Pin WSON with Thermal Pad Package
- –40°C to 150°C TJ Operating Range
- Create a Custom Design using the TPS54541 with the WEBENCH® Power Designer
The TPS54541 device is a 42-V 5-A step-down regulator with an integrated high-side MOSFET. The device survives load dump pulses up to 45 V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no-load supply current to 152 µA. When the enable pin is pulled low, the shutdown supply current is reduced to 2 µA.
Undervoltage lockout is internally set at 4.3 V but can increase using an external resistor divider at the enable pin. The output voltage startup ramp is controlled by the soft-start pin that can also be configured for sequencing and tracking. An open-drain power-good signal indicates the output is within 93% to 106% of the nominal voltage.
A wide adjustable switching-frequency range allows for optimization of either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback, and thermal shutdown protect internal and external components during an overload condition.
The TPS54541 device is available in a 10-pin 4-mm × 4-mm WSON package.
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 | TPS54541 4.5-V to 42-V Input, 5-A Step-Down DC-DC Converter With Soft-Start and Eco-mode™ datasheet (Rev. C) | PDF | HTML | 2017/1/20 | ||
| 應用說明 | Creating a Universal Car Charger for USB Devices From the TPS54240 and TPS2511 (Rev. E) | 2013/9/16 | ||||
| 應用說明 | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012/10/26 | ||||
| 應用說明 | Create a Split-Rail Power Supply with a Wide Input Voltage Buck Regulator (Rev. A) | 2012/10/26 |
設計與開發
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TPS54541EVM-555 — TPS54541EVM-555 - 4.5V 至 42V 輸入 5A 降壓 DC-DC 轉換器評估模組
The TPS54541EVM-555 is a fully assembled and tested circuit for evaluating the TPS54541 Step-Down Converter. The TPS54541EVM-555 operates from a 6.0V to 42V input (12V nominal) and provides a 3.3V output at 5.0A.
SLVC452 — TPS54360 and TPS54361 Family Design Excel Tool
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DPR) | 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。