FSL4110LRN Datasheet PDF - Fairchild

●The FSL4110LRN is a 1000V SenseFET Integrated Power Switch specifically designed for high input voltage offline switching mode power supplies (SMPS) with minimal external components. VCC can be supplied through integrated high-voltage power regulator without auxiliary bias winding. The integrated PWM controller includes a fixed frequency oscillator, under-voltage lockout (UVLO), leading-edge blanking (LEB), optimized gate driver, soft-start, temperature-compensated precise current sources for loop-compensation and variable protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSL4110LR reduces total cost, component count, PCB size and weight; while simultaneously increasing efficiency, productivity and system reliability. This device provides a basic platform for cost-effective design of a flyback converter.

● Built-in avalanche rugged 1000V SenseFET

● 50kHz Precise fixed operating frequency

● VCC can be supplied from either bias-winding or self-biasing

● Soft burst-mode operation minimizing audible noise

● Random frequency fluctuation for low EMI

● Pulse-by-pulse current limit

● Built-in internal startup and soft-start circuit

● Fixed 1.6s Restart time for safe auto-restart mode of all protections

● Overload protection (OLP)

● Over-voltage protection (OVP)

● Abnormal over-current protection (AOCP)

● Internal thermal shutdown (TSD) with hysteresis

● Under-voltage lockout (UVLO) and line over-voltage protection (LOVP) with hysteresis