The UC3879DW from Texas Instruments is a sophisticated integrated circuit designed for high-efficiency, high-power density applications. This phase-shift resonant controller operates at a fixed frequency and is specifically tailored for Zero Voltage Switching (ZVS) full-bridge power topologies. The UC3879DW is an ideal choice for server power supplies, telecommunication equipment, and other systems that require efficient power conversion.

Key Features

• Phase-Shift Control: The device offers phase-shift control which provides Zero Voltage Switching across a wide range of load conditions, reducing switching losses and enabling the use of smaller, more efficient transformers.
• Wide Input Voltage Range: The UC3879DW is designed to handle a broad input voltage range, accommodating various supply levels and ensuring consistent performance.
• Integrated Fault Protection: It includes over-current protection, under-voltage lockout, and over-temperature protection, enhancing system reliability and safety.
• Programmable Oscillator: The onboard oscillator is programmable, allowing precise control over the switching frequency to optimize performance for specific applications.
• Multi-Function Pin: A multi-function pin serves as both the error amplifier input and the synchronization input, providing versatility and simplifying external circuitry.

Applications

The UC3879DW is suitable for a variety of high-performance applications, including:

• High-density power supplies for servers and data centers
• Telecom power systems
• Industrial power supplies
• Uninterruptible power supplies (UPS)

Package and Availability

This controller is available in a 20-pin SOIC (DW) package, providing a compact footprint for space-constrained applications. Its robust design and comprehensive feature set make the UC3879DW from Texas Instruments a reliable and efficient solution for advanced power conversion needs.