TPS51220
- Input Voltage Range: 4.5 V to 28 V
- Output Voltage Range: 1 V to 12 V
- Selectable Light Load Operation (Continuous / Auto Skip / Out-Of-Audio Skip)
- Programmable Droop Compensation
- Voltage Servo Adjustable Soft Start
- 200 kHz to 1 MHz Fixed Frequency PWM
- Selectable Current/D-CAP Mode Architecture
- 180° Phase Shift Between Channels
- Resistor or Inductor DCR Current Sensing
- Powergood Output for Each Channel
- OCL/OVP/UVP/UVLO Protections (OVP Disable Option)
- Thermal Shutdown (Non-Latch)
- Output Discharge Function (Disable Option)
- Integrated Boot Strap MOSFET Switch
- QFN-32 (RHB)
- APPLICATIONS
- Notebook Computer System and I/O Bus
- Point of Load in LCD TV, MFP
The TPS51220 is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51220 supports high efficiency, fast transient response and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 28 V, and output voltages from 1 V to 12 V. Two types of control schemes can be chosen depending on the application. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The D-CAP mode supports fast transient response. The high duty (99%) operation and the wide input/output voltage range supports flexible design for small mobile PCs and a wide variety of other applications. The fixed frequency can be adjusted from 200 kHz to 1 MHz by a resistor, and each channel runs 180° out of phase. The TPS51220 can also synchronize to the external clock, and the interleaving ratio can be adjusted by its duty. The TPS51220 is available in the 32 pin 5x5 QFN package and is specified from -40°C to 85°C.
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 | Fixed Frequency 99% Duty Cycle Peak Current Mode Notebook System Pwr Controlle datasheet (Rev. C) | 2009/7/3 | |||
| 應用說明 | Mosfet Driver Circuit Design Guide for TPS512xx (Rev. A) | 2019/4/1 | ||||
| 應用說明 | Independent Rail Dual Buck Converter using TPS51220 | 2013/11/22 | ||||
| 應用說明 | Intel Core i3, i5, i7 [Arrandale] Reference Design | 2010/7/21 |
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)。
TPS51220EVM — 使用 TPS51220 的 TPS51220EVM 高效能同步降壓評估模組
The TPS51220 is a dual peak-current mode, synchronous step-down controller with three low-dropout (LDO) regulators. It is optimized for 5 V/3.3 V notebook system power supplies. A 99% duty cycle operation enables designers to complete Li-ion battery applications from 2-cells to (...)
TPS51220(A) Unencrypted PSpice Average Model Package (Rev. A)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RHB) | 32 | 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。