The FAN7548G is a Power Factor Correction (PFC) controller manufactured by Fairchild/ON Semiconductor. PFC controllers are used in power supplies to improve power factor, reduce harmonic distortion, and increase energy efficiency. This part is listed as END-OF-LIFE, implying it is no longer actively manufactured and supported, but may still be encountered in existing designs.

Applications

• AC-DC Power Supplies: Improving power factor and reducing harmonic distortion in AC-DC power supplies.
• LED Lighting: Providing power factor correction for LED drivers.
• Electronic Ballasts: Power factor correction in electronic ballasts for fluorescent lamps.
• Industrial Power Supplies: Enhancing the efficiency and reducing harmonic distortion of industrial power supplies.
• Consumer Electronics: Power factor correction in various consumer electronics devices.

Features

• Active Power Factor Correction: Achieves high power factor and reduces harmonic distortion.
• Critical Conduction Mode (CRM) Operation: Provides efficient operation and low switching losses.
• Overvoltage Protection (OVP): Protects the power supply from overvoltage conditions.
• Overcurrent Protection (OCP): Protects the power supply from overcurrent conditions.
• Undervoltage Lockout (UVLO): Prevents operation at low input voltages.

Benefits

• Improved Energy Efficiency: High power factor and reduced harmonic distortion improve energy efficiency.
• Reduced Harmonic Distortion: Minimizes harmonic distortion in the AC line current.
• Enhanced Power Supply Reliability: Overvoltage and overcurrent protection enhance power supply reliability.
• Compliance with Regulatory Standards: Meets regulatory standards for power factor and harmonic distortion.
• Smaller Footprint: Allows for smaller and more compact power supply designs.

Specifications

Key specifications for the FAN7548G typically include input voltage range, switching frequency, overvoltage protection threshold, and overcurrent protection threshold. Refer to the Fairchild/ON Semiconductor datasheet for precise electrical characteristics. Since this part is END-OF-LIFE, availability may be limited.