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UCC38500DW

UCC38500DW Description

The UCC38500DW from Unitrode is a high-performance BiCMOS Power Factor Correction (PFC) and Pulse-Width Modulation (PWM) combination controller, designed to optimize power conversion efficiency in AC/DC and DC/DC applications. This active PFC/PWM controller integrates advanced control algorithms to ensure compliance with stringent power quality standards while minimizing harmonic distortion. Packaged in a Bulk format, it is ideal for industrial and commercial power supplies requiring high reliability and efficiency.

UCC38500DW Features

• BiCMOS Technology: Combines the low power consumption of CMOS with the high-speed switching capabilities of bipolar transistors, enhancing efficiency and thermal performance.
• Integrated PFC/PWM Control: Simplifies design by eliminating the need for separate controllers, reducing component count and board space.
• High Power Factor (>0.99): Ensures compliance with IEC 61000-3-2 and other global standards for harmonic current emissions.
• Wide Input Voltage Range: Supports universal AC input (85V–265V), making it suitable for global applications.
• Programmable Features: Includes adjustable switching frequency, soft-start, and overcurrent protection for flexible design integration.
• Robust Protection: Features undervoltage lockout (UVLO), overvoltage protection (OVP), and thermal shutdown for enhanced system reliability.

UCC38500DW Applications

The UCC38500DW is particularly suited for:

• Switched-Mode Power Supplies (SMPS): Improves efficiency in server, telecom, and industrial power systems.
• LED Drivers: Ensures stable operation with high power factor in lighting applications.
• Uninterruptible Power Supplies (UPS): Enhances energy efficiency and reduces input current distortion.
• Consumer Electronics: Ideal for high-power adapters and appliances requiring compliance with energy efficiency standards.

Conclusion of UCC38500DW

The UCC38500DW stands out as a versatile and efficient solution for modern power supply designs, offering integrated PFC/PWM control, high power factor correction, and robust protection features. Its BiCMOS technology and programmable parameters make it a superior choice over discrete or less integrated alternatives, particularly in applications demanding high efficiency, compact design, and regulatory compliance. Engineers will appreciate its reliability and performance in demanding power conversion environments.