Overview of UCC28070PWR by Texas Instruments

The UCC28070PWR is an innovative power factor correction (PFC) controller IC designed by Texas Instruments (TI) to enable the creation of high-efficiency, interleaved power systems. This advanced controller is particularly well-suited for applications that require a high power factor, low total harmonic distortion, and high efficiency, such as server power supplies, industrial power systems, and high-end audio power amplifiers.

Key Features

• Interleaved PFC Control: The UCC28070PWR incorporates an advanced control method that allows for the operation of two-phase interleaved PFC converters. This technique reduces input and output ripple currents, leading to smaller component sizes and improved thermal management.
• Advanced Current-Sharing: The device ensures accurate current sharing between phases, which enhances system reliability and extends the life of critical components by reducing stress during operation.
• Programmable Switching Frequency: With a programmable switching frequency ranging from 18 kHz to 250 kHz, the UCC28070PWR allows designers to optimize components to achieve the desired balance between efficiency, component size, and cost.
• Feedforward Line Regulation: This feature maintains a consistent loop performance regardless of input voltage variations, ensuring stable operation under varying line conditions.
• Efficient Overcurrent Protection: The UCC28070PWR is equipped with robust overcurrent protection that helps prevent damage to the system during overload conditions.

Package and Integration

The UCC28070PWR is offered in a 20-pin TSSOP (Thin Shrink Small Outline Package) that is ideal for space-constrained applications. Its integration-friendly design simplifies the development process, enabling engineers to design PFC circuits with improved performance and reduced time-to-market.

Applications

Due to its versatility and high performance, the UCC28070PWR is used in a variety of applications, including:

• AC-DC power supplies for servers and telecom equipment
• Industrial power systems
• High-end consumer electronics
• Power supplies for LED lighting

In summary, the UCC28070PWR by Texas Instruments represents a state-of-the-art solution for power factor correction, offering designers a powerful tool to enhance the efficiency and reliability of their power supply designs.