STMicroelectronics

L6563

L6563 Description

The L6563 from STMicroelectronics is a transition-mode Power Factor Correction (PFC) controller IC, designed for high-efficiency AC-DC power supplies. Operating within a 10.3V to 22V supply range, it ensures compliance with stringent energy efficiency standards. This surface-mount device comes in a 14-pin SO package and is RoHS3 compliant, making it suitable for modern eco-conscious designs. With a low startup current of 50 µA, it minimizes power losses during initialization. The L6563 is optimized for discontinuous conduction mode (DCM), offering improved performance in mid-power applications (typically up to 300W). Its REACH-unaffected status and MSL 3 (168-hour moisture sensitivity) ensure reliability in industrial environments.

L6563 Features

• Transition-Mode PFC Operation: Enhances efficiency with near-unity power factor (>0.99) and low THD.
• Wide Supply Voltage Range (10.3V–22V): Supports flexible design integration.
• Ultra-Low Startup Current (50 µA): Reduces standby power consumption.
• Integrated Protections: Includes overvoltage protection (OVP), undervoltage lockout (UVLO), and feedback failure detection.
• Precision Voltage Reference (2.5V ±1%): Ensures stable regulation.
• Totem-Pole Output (1.5A sink/source): Drives external MOSFETs efficiently.
• Compliant with Energy Standards: Meets EN61000-3-2 and ENERGY STAR requirements.

L6563 Applications

The L6563 excels in SMPS (Switched-Mode Power Supplies), LED drivers, and adapter designs requiring high power factor correction. Its transition-mode operation makes it ideal for:

• Industrial Power Supplies: Where efficiency and reliability are critical.
• Consumer Electronics: Such as LCD TVs, gaming consoles, and PC power supplies.
• Lighting Systems: Including high-brightness LED drivers and ballasts.
• Renewable Energy Systems: Solar inverters and battery chargers.

Conclusion of L6563

The L6563 stands out as a high-performance, cost-effective PFC controller for mid-power applications. Its low startup current, robust protections, and compliance with global standards make it a preferred choice for designers aiming to optimize efficiency and reduce harmonic distortion. Whether for industrial, consumer, or renewable energy systems, the L6563 delivers reliable, high-quality power correction in a compact, surface-mount package.