The TM861 is a power factor correction (PFC) controller IC manufactured by Sanken Electric. It is designed to improve the power factor of electronic devices, reducing harmonic distortion and improving energy efficiency. This IC is commonly used in power supplies for various applications, ensuring compliance with energy efficiency standards.

Applications

• Power Supplies: Improving the power factor in AC-DC power supplies for computers, servers, and consumer electronics.
• LED Lighting: Reducing harmonic distortion in LED lighting drivers.
• Industrial Equipment: Power factor correction in industrial power supplies.
• Motor Drives: Improving the efficiency and reducing harmonics in motor control systems.
• Electronic Ballasts: Power factor correction for fluorescent lamp ballasts.
• Renewable Energy Systems: Used in inverters for solar and wind power systems to improve grid compatibility.

Features

• Power Factor Correction: Actively corrects the power factor to near unity.
• Low Total Harmonic Distortion (THD): Reduces harmonic distortion in the AC line current.
• Overvoltage Protection: Protects the power supply from overvoltage conditions.
• Overcurrent Protection: Prevents damage from excessive current draw.
• Undervoltage Lockout (UVLO): Ensures proper startup and shutdown.
• Soft Start Function: Reduces stress on components during startup.

Benefits

• Improved Energy Efficiency: Reduces energy waste by improving the power factor.
• Reduced Harmonic Distortion: Minimizes interference with other electronic devices on the AC line.
• Enhanced System Reliability: Protection features prevent damage from various fault conditions.
• Compliance with Standards: Helps meet regulatory requirements for power factor and harmonic distortion.
• Cost-Effective Solution: Provides an efficient and cost-effective way to improve power factor.

Additional Details

The TM861 requires external components, such as inductors, capacitors, and resistors, to implement the PFC circuit. Its advanced control algorithms ensure stable and efficient power factor correction. For detailed specifications and application information, refer to the Sanken Electric datasheet for the TM861.