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UCC2891DG4 from TI,Texas Instruments

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UCC2891DG4

Manufacturer: TI

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

Partnumber Manufacturer Quantity Availability
UCC2891DG4 TI 5 In Stock

Description and Introduction

Current Mode Active Clamp PWM Controller 16-SOIC -40 to 85 The UCC2891DG4 is a high-performance phase-shifted full-bridge controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** UCC2891DG4  
- **Package:** SOIC-16  
- **Type:** Phase-Shifted Full-Bridge PWM Controller  
- **Operating Temperature Range:** -40°C to +105°C  
- **Input Voltage Range (VDD):** 8.5V to 17V  
- **Switching Frequency Range:** Up to 1MHz  
- **Output Drive Current (Source/Sink):** 1A (Peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Control Method:** Voltage-Mode PWM  
- **Protection Features:** Overcurrent Protection (OCP), Soft-Start, UVLO  

### **Descriptions:**  
The UCC2891DG4 is a phase-shifted full-bridge controller designed for high-efficiency power conversion applications. It provides precise PWM control for power MOSFETs in full-bridge topologies, enabling zero-voltage switching (ZVS) to minimize switching losses. It is commonly used in telecom, server, and industrial power supplies.  

### **Features:**  
- **Phase-Shifted PWM Control:** Enables ZVS for improved efficiency.  
- **Adaptive Delay Control:** Optimizes dead time for ZVS operation.  
- **Programmable Frequency:** Adjustable switching frequency up to 1MHz.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Integrated Error Amplifier:** Simplifies feedback loop design.  
- **Synchronization Capability:** Allows synchronization to an external clock.  
- **Overcurrent Protection (OCP):** Shuts down the controller in fault conditions.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within voltage limits.  

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

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