TPS54561
- 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 TPS54561 with the WEBENCH® Power Designer
The TPS54561 is a 60-V, 5-A, step down regulator with an integrated high side MOSFET. The device survives load dump pulses up to 65V 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. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.
Undervoltage lockout is internally set at 4.3 V but can increase using an external resistor divider at the enable pin. The output voltage start up ramp is controlled by the soft start pin that can also be configured for sequencing/tracking. An open drain power good signal indicates the output is within 93% to 106% of its 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 protects internal and external components during an overload condition.
The TPS54561 is available in an 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 | TPS54561 4.5-V to 60-V Input, 5-A, Step-Down DC-DC Converter with Soft-Start and Eco-mode™ datasheet (Rev. G) | PDF | HTML | 2021/6/2 | ||
| 應用說明 | Controller to Converter – Design Considerations for 24V and 48V Systems | PDF | HTML | 2024/10/2 | |||
| 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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| 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。