The FA5587N-D1 is a highly integrated power factor correction (PFC) controller IC produced by Fuji Electric. It is designed for use in AC-DC power supplies to improve power factor and reduce harmonic distortion. This controller utilizes a quasi-resonant control method, which helps to achieve high efficiency and low electromagnetic interference (EMI). The FA5587N-D1 integrates various protection features and control functions to ensure stable and reliable operation in a wide range of applications.

Applications

• AC-DC power supplies for consumer electronics
• Adapter for Laptop computers and other portable devices
• LED lighting systems
• Industrial power equipment
• Server and networking power supplies

Features

• Quasi-Resonant Control: Enables high efficiency and reduces EMI noise.
• Low Startup Current: Minimizes power consumption during startup.
• Overvoltage Protection (OVP): Protects the power supply from excessive voltage levels.
• Overcurrent Protection (OCP): Prevents damage due to excessive current.
• Open-Loop Protection: Shuts down the IC if the feedback loop is broken.
• Built-in Soft-Start Function: Reduces inrush current during power-up.
• Under Voltage Lockout (UVLO): Prevents operation when the input voltage is too low.

Benefits

• Enhanced Power Factor: Improves energy efficiency and reduces reactive power.
• Reduced Harmonic Distortion: Minimizes interference with other devices.
• Increased System Reliability: Protection features ensure robust operation.
• Lower EMI Noise: Quasi-resonant control reduces electromagnetic interference.
• Compact Power Supply Design: High integration allows for smaller designs.

Additional Details

The FA5587N-D1 typically operates with a supply voltage between 9V and 25V. It is available in an 8-pin package. The quasi-resonant control allows for switching at valley points of the voltage waveform, minimizing switching losses and improving efficiency. The integrated protection features such as OVP, OCP, and open-loop protection ensure safe and reliable operation. The soft-start function limits inrush current, further enhancing system reliability. This IC is commonly used in power supplies where high efficiency, low EMI, and robust protection are required.