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Fairchild FAN6757 mWSaver™ PWM Controller

Fairchild FAN6757 mWSaver™ PWM Controller

Fairchild's FAN6757 mWSaver™ PWM Controller is a next generation Green Mode PWM controller with innovative mWSaver™ technology, which dramatically reduces standby and no-load power consumption, enabling conformance to worldwide Standby Mode efficiency guidelines. An innovative AX-CAP™ method minimizes losses in the EMI filter stage by eliminating the X-cap discharge resistors while meeting IEC61010-1 safety requirements. The FAN6757 requires a minimum number of external components and provides a basic platform that is well suited for cost-effective flyback converter designs that require extremely low standby power consumption.
Features
  • Single-Ended Topologies, such as Flyback and Forward Converters
  • mW Saver™ Technology
    • Achieves Low No-Load Power Consumption: <50mW at 230VAC (EMI Filter Loss Included)
    • Eliminates X Capacitor Discharge Resistor Loss with AX-CAP™ Technology
    • Linearly Decreases Switching Frequency to 23KHz
    • Burst Mode Operation at Light-Load Condition
    • 500V High-Voltage JFET Startup Circuit to Elimnate Startup Resistor Loss
  • Highly Integrated with Rich Features
    • Proprietary Frequency Hopping to Reduce EMI
    • High-Voltage Sampling to Detect Input Voltage
    • Peak-Current-Mode Control with Slope Compensation
    • Cycle-by-Cycle Current Limiting with Line Compensation
    • Leading Edge Blanking (LEB)
    • Built-In 7ms Soft-Start

  • Advanced Protections
    • Brown-In/Brownout Recovery
    • Internal Overload/Open-Loop Protection (OLP)
    • VDD Under-Voltage Lockout (UVLO)
    • VDD Over-Voltage Protection (VDD OVP)
    • Over-Temperature Protection (OTP)
    • Current-Sense Short-Circuit Protection (SSCP)

    Applications
    • Flyback power supplies that demand extremely low standby power consumption
    • Adapters for Notebooks, Printers, Game Consoles
    • Open-Frame SMPS for LCD TV, LCD Monitors, Printer Power
Block Diagram
Block Diagram
  • Fairchild Semiconductor
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