The L6560 from STMicroelectronics is a versatile and efficient power factor correction (PFC) controller designed for a wide range of applications that require compliance with the IEC61000-3-2 standard on harmonic current emission. This device is particularly well-suited for systems that demand high power factor and low THD (Total Harmonic Distortion) across a broad spectrum of line and load conditions.

Key Features

• Transition-Mode PFC Controller: The L6560 operates in Transition Mode (TM), also known as Boundary Conduction Mode (BCM), which allows for an optimal trade-off between switching loss and EMI performance, making it ideal for medium-power applications.
• Low Start-Up Current: The device boasts a very low start-up current of just 70µA, which helps in reducing the overall power consumption during the initial phase of operation.
• Low Operating Supply Current: With an operating supply current of 4mA, the L6560 ensures efficient system operation by minimizing the power drawn for its own functionality.
• Highly Integrated: The L6560 integrates functions such as the error amplifier, the multiplier/divider for input current shaping, and a precise internal voltage reference, which simplifies design and reduces external component count.
• Protection Features: The device includes a comprehensive set of protection features like overvoltage protection, feedback disconnection, and a disable function, providing robust operation under fault conditions.

Applications

The L6560 is suitable for a variety of applications, including:

• Main switch-mode power supplies (SMPS) for TVs, monitors, and servers
• Adapters and battery chargers for laptops and mobile devices
• Lighting systems such as LED drivers and electronic ballasts
• Industrial power supplies requiring high efficiency and power factor correction

Conclusion

The STMicroelectronics L6560 is a highly integrated PFC controller that delivers performance, efficiency, and reliability for designers looking to meet stringent power quality standards. Its advanced features and comprehensive protection mechanisms make it an excellent choice for a wide array of power supply applications.