The UCC38051DR is a versatile and energy-efficient power factor correction (PFC) controller designed by Texas Instruments. This advanced integrated circuit (IC) is specifically engineered to enhance the power factor of AC-DC power systems, making it an ideal solution for a wide range of applications such as power supplies for personal computers, flat-panel televisions, and other consumer electronics that demand high efficiency and reliability.

Key Features

• Precision Power Factor Correction: The UCC38051DR is capable of achieving a power factor of greater than 0.99, which ensures that the power delivered to the load is utilized efficiently, resulting in reduced energy consumption and lower electricity costs.
• Transition Mode Operation: It operates in transition mode (also known as boundary conduction mode), which provides an optimal balance between the efficiency and the size of the power supply by minimizing the switching losses and allowing for the use of smaller inductors and capacitors.
• Programmable Soft-Start: This feature limits inrush current during startup, thereby enhancing system reliability and extending the lifespan of the components.
• Low Start-Up and Operating Current: The UCC38051DR draws a low start-up current of 100 µA and maintains a low operating current of 2.5 mA, contributing to the overall efficiency of the power supply.
• Drive Capability: It has a totem-pole output stage with a peak drive capability of 1 A, which allows direct drive of the power MOSFET in the PFC stage.

Applications

• AC-DC Adapters for Notebooks and PCs
• Flat-Panel Television Power Supplies
• Power Supplies for Printers and Audio/Video Equipment
• Standby and Auxiliary Power Supplies

Package and Availability

The UCC38051DR is available in an 8-pin SOIC package, which is suitable for surface-mount technology (SMT) and is designed for optimal thermal performance and space-saving on the PCB. Texas Instruments provides comprehensive technical support and documentation for this product, including datasheets, application notes, and design resources to facilitate the integration of the UCC38051DR into various power supply designs.