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UCC2891DRG4 from TI,Texas Instruments

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UCC2891DRG4

Manufacturer: TI

Current Mode Active Clamp PWM Controller 16-SOIC -40 to 85

Partnumber Manufacturer Quantity Availability
UCC2891DRG4 TI 2530 In Stock

Description and Introduction

Current Mode Active Clamp PWM Controller 16-SOIC -40 to 85 The UCC2891DRG4 is a phase-shifted full-bridge controller manufactured by Texas Instruments (TI). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** UCC2891DRG4  
- **Package:** SOIC-16  
- **Operating Temperature Range:** -40°C to +125°C  
- **Supply Voltage (VCC):** 15V (max)  
- **Control Method:** Phase-Shifted PWM  
- **Switching Frequency:** Adjustable up to 1MHz  
- **Output Drive Current:** 1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Features:** Soft-start, adjustable dead-time control, adaptive delay  

### **Descriptions:**
The UCC2891DRG4 is a high-performance phase-shifted full-bridge controller designed for efficient power conversion in applications such as telecom, industrial, and computing power supplies. It provides precise PWM control with adaptive delay to minimize switching losses.

### **Features:**
- **Phase-Shifted Full-Bridge Control:** Enables zero-voltage switching (ZVS) for improved efficiency.  
- **Adjustable Switching Frequency:** Up to 1MHz for flexible design.  
- **Programmable Dead Time:** Optimizes efficiency by reducing body diode conduction losses.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Adaptive Delay Control:** Enhances ZVS performance across load variations.  
- **Overcurrent Protection:** Includes cycle-by-cycle current limiting.  
- **Synchronous Rectifier Control:** Supports secondary-side regulation.  

This information is sourced from TI's official documentation. For detailed application notes, refer to the datasheet.

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