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TPS51220ARSNT from TI,Texas Instruments

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TPS51220ARSNT

Manufacturer: TI

Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller 32-QFN -40 to 85

Partnumber Manufacturer Quantity Availability
TPS51220ARSNT TI 174 In Stock

Description and Introduction

Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller 32-QFN -40 to 85 The TPS51220ARSNT is a synchronous buck controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** 0.7V to 5.5V (adjustable)  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Output Current:** Up to 20A (with external FETs)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 20-pin VQFN (RSN)  

### **Description:**  
The TPS51220ARSNT is a high-efficiency synchronous buck controller designed for point-of-load (POL) applications. It supports a wide input voltage range and provides precise output voltage regulation. The device integrates gate drivers for external N-channel MOSFETs and includes features like adjustable switching frequency, soft-start, and protection mechanisms.  

### **Features:**  
- **Adjustable Output Voltage:** Supports 0.7V to 5.5V via external resistor divider  
- **Adjustable Switching Frequency:** 300kHz to 1MHz for optimization of efficiency and component size  
- **Integrated Gate Drivers:** Reduces external component count  
- **Pre-Bias Startup:** Prevents negative current during startup  
- **Protection Features:** Overcurrent, overvoltage, undervoltage lockout (UVLO), and thermal shutdown  
- **Soft-Start Control:** Adjustable to minimize inrush current  
- **Power Good Indicator:** Monitors output voltage status  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller 32-QFN -40 to 85

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