FAN6982: Advanced CCM PFC Controller, PFC-Ready Signal, Brown Out Protection, Programmable 2 Level Output Voltage

The FAN6982 is a 14-pin, Continuous Conduction Mode (CCM) PFC controller IC intended for Power Factor Correction (PFC) pre-regulators. The FAN6982 includes circuits for the implementation of leading edge, average current, “boost”-type power factor correction, and results in a power supply that fully complies with the IEC1000-3-2 specification.A TriFault Detect™ function helps reduce external components and provides full protection for feedback loops such as open, short, and over voltage. An over-voltage comparator shuts down the PFC stage in the event of a sudden load decrease. The RDY signal can be used for power-on sequence control. The EN function can choose to enable or disable the range function. FAN6982 also includes PFC soft-start, peak current limiting, and input voltage brownout protection.

Features

• Continuous Conduction Mode
• Innovative Switching-Charge Multiplier-Divider
• Average-Current-Mode for Input-Current Shaping
• TriFault Detect™ Prevent Abnormal Operation for Feedback Loop
• Power-On Sequence Control
• Soft-Start Capability
• Brownout Protection
• Cycle-by-Cycle Peak Current Limiting
• Improves Light-Load Efficiency
• Fulfills Class-D Requirements of IEC 1000-3-2
• Wide Range Universal AC Input Voltage
• Maximum Duty Cycle 97%
• V_DD Under-Voltage Lockout (UVLO)

Application Notes