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TPS51220 from TI,Texas Instruments

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TPS51220

Manufacturer: TI

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

Partnumber Manufacturer Quantity Availability
TPS51220 TI 21 In Stock

Description and Introduction

Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller The TPS51220 is a synchronous buck controller manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Descriptions:**  
- The TPS51220 is a **dual-output synchronous buck controller** designed for **DDR memory power applications**, including DDR2, DDR3, DDR3L, DDR4, and low-power DDR3/4.  
- It provides **two regulated output voltages**: **VDDQ (main output)** and **VTT (tracking termination voltage)**.  
- The device supports **DDR memory power supply requirements** with high efficiency and fast transient response.  

### **Key Features:**  
1. **Dual Outputs:**  
   - **VDDQ Buck Controller** (0.5V to 1.8V output)  
   - **VTT LDO/Sink-Source Controller** (half of VDDQ, with ±1% tracking accuracy)  

2. **Input Voltage Range:**  
   - **4.5V to 28V** (wide input range)  

3. **Switching Frequency:**  
   - **300kHz to 1.2MHz** (adjustable with external resistor)  

4. **Efficiency & Performance:**  
   - **High efficiency** with synchronous rectification  
   - **Fast transient response** for DDR memory applications  

5. **Protection Features:**  
   - Overcurrent protection (OCP)  
   - Overvoltage protection (OVP)  
   - Undervoltage lockout (UVLO)  

6. **Package & Operating Conditions:**  
   - **16-pin HTSSOP (PowerPAD™) package**  
   - **Operating temperature range:** -40°C to +85°C  

7. **Additional Functions:**  
   - **Power-good (PG) indicator** for VDDQ and VTT  
   - **Soft-start control**  

### **Applications:**  
- **DDR2/DDR3/DDR4 memory power supplies**  
- **Notebooks, desktops, and servers**  
- **Embedded systems requiring DDR memory power**  

For detailed electrical characteristics and application circuits, refer to the **official TI datasheet**.  

(Note: This is a factual summary based on available specifications; always verify with the latest datasheet.)

Application Scenarios & Design Considerations

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

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