The FAN7930DMX is an active power factor correction (PFC) controller designed for boost PFC applications. Manufactured by Fairchild/ON Semiconductor, it enables power supplies to achieve high power factor and meet stringent energy efficiency regulations. This controller utilizes a simple and efficient control scheme.

Applications:

• LCD TVs
• PDP TVs
• Adapters
• Electronic Lighting Ballasts
• Offline Power Supplies

Features:

• Operating Frequency up to 300kHz: Allows for smaller and more efficient designs.
• Internal Start-up Timer: Simplifies the design and reduces external component count.
• Cycle-by-Cycle Current Limiting: Provides robust over-current protection.
• Over-Voltage Protection (OVP): Prevents damage due to excessive output voltage.
• Open-Loop Protection: Enhances system reliability.
• Brownout Protection: Protects the power supply from low input voltage conditions.

Benefits:

• High Power Factor Correction: Improves energy efficiency and reduces wasted power.
• Reduced Total Harmonic Distortion (THD): Meets regulatory requirements for harmonic emissions.
• Improved System Reliability: Comprehensive protection features ensure robust operation.
• Simplified Design: Integrated features reduce component count and design complexity.
• Compact Solution: High operating frequency enables smaller component sizes.

Technical Specifications (Typical):

• Operating Frequency: Programmable, up to 300 kHz
• Input Voltage Range: Universal AC input
• Total Harmonic Distortion (THD): < 5% (typical)
• Over-Voltage Protection: Programmable
• Package: 8-SOIC

The FAN7930DMX allows power supplies to meet energy efficiency standards with a cost-effective and reliable solution.