Texas Instruments

UCC2818AD

UCC2818AD Description

The UCC2818AD from Texas Instruments is an advanced average current-mode power factor correction (PFC) controller designed for high-performance AC/DC power supplies. Operating within a 12V to 17V supply range, it supports switching frequencies from 6kHz to 220kHz, making it versatile for various power conversion topologies. Packaged in a 16-pin SOIC and compliant with ROHS3 and REACH standards, it is ideal for surface-mount applications. With a low startup current of 150 µA, it ensures efficient power management in energy-sensitive designs.

UCC2818AD Features

• Average Current-Mode Control: Ensures high power factor (>0.99) and low THD (total harmonic distortion) for compliance with global efficiency standards.
• Wide Frequency Range (6kHz–220kHz): Enables flexible design optimization for both high and low-power applications.
• Low Startup Current (150 µA): Reduces standby power consumption, critical for energy-efficient systems.
• Robust Protection: Includes features like overvoltage protection (OVP) and undervoltage lockout (UVLO) for reliable operation.
• Surface-Mount (SOIC-16) Packaging: Compact and suitable for automated PCB assembly.
• RoHS3 & REACH Compliant: Meets environmental and regulatory requirements.

UCC2818AD Applications

The UCC2818AD excels in power factor correction for offline power supplies, including:

• Server & Telecom Power Supplies: Enhances efficiency in high-power AC/DC converters.
• Industrial & LED Lighting Drivers: Ensures stable performance in harsh environments.
• Consumer Electronics: Improves power quality in TVs, adapters, and appliances.
• Renewable Energy Systems: Optimizes grid-tied inverters for solar/wind applications.

Conclusion of UCC2818AD

The UCC2818AD stands out as a high-performance PFC controller with precision average current control, wide frequency flexibility, and ultra-low startup power. Its compact SOIC-16 package and compliance with environmental standards make it a preferred choice for modern power supply designs. While it is currently in Last Time Buy status, its technical advantages ensure it remains a reliable solution for engineers seeking high-efficiency, high-power-factor correction in critical applications.