●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 23kHz. 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, FAN6755 uses the BiCMOS process, which allows an operating current of only 2mA. The standby power consumption can be under 100mW for most of LCD monitor power supply designs.
●Features
●Internal High-Voltage Startup
●Low Operating Current (Maximum: 2mA)
●Adaptive Decreasing of PWM Frequency to 23KHz at Light-Load condition to Improve Light-Load Efficiency
●Frequency Hopping to Reduce EMI Emission
●Fixed PWM Frequency: 65KHz
●Internal Leading-Edge Blanking
●Built-in Synchronized Slope Compensation
●Auto-Restart Protection : Feedback Open-Loop Protection (OLP), VDDOver-Voltage Protection (OVP), Over-Temperature Protection (OTP), and Line Over-Voltage Protection
●Soft Gate Drive with Clamped Output Voltage: 18V
●VDD Under-Voltage Lockout (UVLO)
●Programmable Constant Power Limit (Full AC Input Range)
●Internal OTP Sensor with Hysteresis
●Build-in 5ms Soft-Start Function
●Input Voltage Sensing (VINPin) 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
