Description
This highly integrated PWM controller provides several features to enhance the performance of flyback converters.
To minimize standby power consumption, a proprietary adaptive green-mode function reduces switching frequency at light-load condition. To avoid acoustic noise problems, the minimum PWM frequency is set above 23 kHz. This green-mode function enables the power supply to meet international power conservation requirements, such as Energy Star®. With the internal high-voltage startup circuitry, the power loss caused by bleeding resistors is also eliminated. To further reduce power consumption, FAN6755W/UW uses the BiCMOS process, which allows an operating current of only 2 mA. The standby power consumption can be under 100 mW for most of LCD monitor power supply designs.

FEATUREs
■ mWSaver™ Technology Provides Industry’s Best in-Class Standby Power
   - <100 mW at 25-mW Load for LCDM Adaptor
   - Internal High-Voltage JFET Startup
   - Low Operating Current: Under 2 mA
   - Adaptively Decrease PWM Frequency to 23 kHz at Light-Load Condition for Better Efficiency
   - Feedback Impedance Switching During Minimum Load or No Load
■ Proprietary Asynchronous Frequency Hopping Technique that Reduces EMI
■ Fixed PWM Frequency: 65 kHz (FAN6755W), 130 kHz (FAN6755UW)
■ Internal Leading-Edge Blanking
■ Built-in Synchronized Slope Compensation
■ Auto-Restart Protection: Feedback Open-Loop
   Protection (OLP), VDD Over-Voltage Protection
   (OVP), Over-Temperature Protection (OTP), and
   Line Over-Voltage Protection
■ Soft Gate Drive with Clamped Output Voltage: 18 V
■ VDD Under-Voltage Lockout (UVLO)
■ Programmable Constant Power Limit (Full AC Input Range)
■ Internal OTP Sensor with Hysteresis
■ Build-in 5-ms Soft-Start Function
■ Input Voltage Sensing (VIN Pin) for Brown-In/Out Protection with Hysteresis and Line Over-Voltage Protection

APPLICATIONs
General-purpose switched-mode power supplies and flyback power converters, including:
■ LCD Monitor Power Supply
■ Open-Frame SMPS