FSGM0465开关电源设计芯片资料

　　Features

　　ƒ Soft Burst-Mode Operation for Low Standby Power

　　Consumption and Low Noise

　　ƒ Precision Fixed Operating Frequency： 66kHz

　　ƒ Pulse-by-Pulse Current Limit

　　ƒ Various Protection Functions： Overload Protection

　　（OLP）， Over-Voltage Protection （OVP）， Abnormal

　　Over-Current Protection （AOCP）， Internal Thermal

　　Shutdown （TSD） with Hysteresis， Output-Short

　　Protection （OSP）， and Under-Voltage Lockout

　　（UVLO） with Hysteresis

　　ƒ Auto-Restart Mode

　　ƒ Internal Startup Circuit

　　ƒ Internal High-Voltage SenseFET： 650V

　　ƒ Built-in Soft-Start： 15ms

　　Description

　　The FSGM0465R is an integrated Pulse Width

　　Modulation （PWM） controller and SenseFET specifically

　　designed for offline Switch-Mode Power Supplies

　　（SMPS） with minimal external components. The PWM

　　controller includes an integrated fixed-frequency

　　oscillator， Under-Voltage Lockout （UVLO）， LeadingEdge Blanking （LEB）， optimized gate driver， internal

　　soft-start， temperature-compensated precise current

　　sources for loop compensation， and self-protection

　　circuitry. Compared with a discrete MOSFET and PWM

　　controller solution， the FSGM series can reduce total

　　cost， component count， size， and weight; while

　　simultaneously increasing efficiency， productivity， and

　　system reliability. This device provides a basic platform

　　suited for cost-effective design of a flyback converter.