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TPS51220A from TI,Texas Instruments

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TPS51220A

Manufacturer: TI

Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller

Partnumber Manufacturer Quantity Availability
TPS51220A TI 90 In Stock

Description and Introduction

Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller The TPS51220A is a synchronous buck controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on factual information:  

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

### **Descriptions:**  
The TPS51220A is a high-performance synchronous buck controller designed for low-voltage, high-current applications. It provides precise voltage regulation and supports adaptive on-time control for fast transient response. The device is commonly used in point-of-load (POL) power supplies, servers, storage systems, and networking equipment.  

### **Features:**  
- **Adaptive On-Time Control:** Ensures fast transient response.  
- **Pre-Bias Startup:** Prevents negative current during startup.  
- **Programmable Soft-Start:** Reduces inrush current.  
- **Power Good Indicator:** Monitors output voltage status.  
- **Overcurrent Protection (OCP):** Prevents damage from excessive current.  
- **Overvoltage Protection (OVP):** Safeguards against output voltage spikes.  
- **Thermal Shutdown:** Protects against overheating.  
- **External Synchronization:** Supports synchronization with an external clock.  

This information is sourced from TI's official datasheet and product documentation.

Application Scenarios & Design Considerations

Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller

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