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UCC28500DW

UCC28500DW Description

The UCC28500DW from Unitrode is a high-performance BiCMOS Power Factor Correction (PFC) and Pulse Width Modulation (PWM) combination controller, designed for efficient power management in AC/DC and DC/DC converter applications. Operating within a 9.7V to 18V supply range, it integrates average current-mode control for precise regulation, ensuring high power factor and low harmonic distortion. With a switching frequency range of 80kHz to 120kHz, it optimizes efficiency while minimizing EMI. The device is housed in a surface-mount package, making it suitable for compact, high-density designs. Its low startup current (150 µA) enhances energy efficiency during initialization.

UCC28500DW Features

• BiCMOS Technology: Combines high-speed switching with low power consumption.
• Average Current-Mode Control: Ensures stable PFC performance with minimal input current distortion.
• Wide Supply Range (9.7V–18V): Supports flexible system integration.
• Low Startup Current (150 µA): Reduces power loss during boot-up.
• 80kHz–120kHz Switching Frequency: Balances efficiency and noise performance.
• Surface-Mount Package (Bulk): Ideal for automated assembly and space-constrained applications.
• Active Product Status: Guaranteed availability for long-term designs.

UCC28500DW Applications

The UCC28500DW excels in high-efficiency power supplies, including:

• Server/Telecom Power Systems: Ensures compliance with PFC standards (e.g., IEC 61000-3-2).
• Industrial AC/DC Converters: Delivers robust performance in harsh environments.
• LED Drivers: Maintains stable output with high power factor.
• Consumer Electronics: Reduces harmonic distortion in SMPS designs.

Conclusion of UCC28500DW

The UCC28500DW stands out for its integrated PFC/PWM control, low startup current, and wide operating range, making it a superior choice for modern power conversion systems. Its BiCMOS architecture and surface-mount compatibility further enhance its appeal for high-reliability, compact designs. Engineers seeking a high-efficiency, standards-compliant solution for PFC-critical applications will find this IC exceptionally well-suited.