Texas Instruments

UCC28517DW

UCC28517DW Description

The UCC28517DW from Texas Instruments is a high-performance average current-mode power factor correction (PFC) controller designed for switch-mode power supplies (SMPS). Operating at a fixed switching frequency of 200kHz, it ensures efficient power delivery while maintaining compliance with harmonic distortion standards. The IC supports a wide supply voltage range of 9.7V to 18V, making it suitable for various AC/DC and DC/DC conversion applications. Packaged in a 20-pin SOIC and rated for surface-mount assembly, it is ideal for compact, high-density designs. With a low startup current of 100µA, it minimizes power loss during initialization.

UCC28517DW Features

• Average Current-Mode Control: Ensures precise current regulation for improved power factor correction (PFC) performance.
• Fixed 200kHz Switching Frequency: Reduces EMI and simplifies filter design.
• Wide Supply Range (9.7V–18V): Enhances flexibility in industrial and consumer applications.
• Low Startup Current (100µA): Optimizes energy efficiency during power-up.
• RoHS3 & REACH Compliant: Meets environmental and regulatory standards.
• Surface-Mount SOIC-20 Package: Facilitates automated PCB assembly and space-saving designs.
• Last Time Buy Status: Available for final procurement before discontinuation.

UCC28517DW Applications

This PFC controller is ideal for:

• Server & Telecom Power Supplies: Ensures high efficiency and compliance with power quality standards.
• LED Drivers: Improves power factor in high-brightness lighting systems.
• Industrial SMPS: Supports robust power conversion in harsh environments.
• Consumer Electronics: Enhances energy efficiency in adapters and chargers.

Conclusion of UCC28517DW

The UCC28517DW stands out as a reliable average current-mode PFC controller with low standby power consumption, wide voltage compatibility, and high-frequency operation. Its compact SOIC package and compliance with environmental regulations make it a preferred choice for engineers designing efficient power systems. While marked as Last Time Buy, it remains a viable solution for legacy and new designs requiring high-performance PFC correction.