The FAN6961SZB is a critical conduction mode (CRM) power factor correction (PFC) controller from Fairchild/ON Semiconductor. It is designed to improve the power factor and reduce total harmonic distortion (THD) in AC-DC power supplies. This controller is suitable for a wide range of applications requiring high efficiency and compliance with harmonic regulations.

Applications:

• AC-DC Power Supplies
• LED Lighting Power Supplies
• Adapters
• Electronic Ballasts
• LCD TVs and Monitors

Features:

• Critical Conduction Mode (CRM) Operation: Ensures high efficiency and low switching losses.
• Low Total Harmonic Distortion (THD): Meets stringent harmonic regulations.
• Precise Output Voltage Regulation: Provides stable and accurate output voltage.
• Built-in Protection Features: Includes over-voltage, over-current, and over-temperature protection.
• Brown-Out Protection: Prevents damage from low input voltage conditions.
• Frequency Foldback: Improves efficiency at light loads.

Benefits:

• Improved Power Factor: Reduces reactive power and improves energy efficiency.
• Reduced Harmonic Distortion: Minimizes interference with other electronic devices.
• Increased System Reliability: Built-in protection features safeguard against potential damage.
• Simplified Design: Integrated features simplify circuit design and reduce component count.
• Compliance with Regulations: Meets international harmonic standards.

Technical Specifications (Typical):

• Input Voltage Range: (e.g., 85VAC to 265VAC)
• Operating Frequency: (e.g., 65kHz)
• Total Harmonic Distortion (THD): (e.g., <10%)
• Protection Features: Over-Voltage Protection (OVP), Over-Current Protection (OCP), Over-Temperature Protection (OTP), Brown-Out Protection
• Package: SOP-8