FSL4110LR 1,000 V Integrated Power Switch

Product Highlights > FSL4110LR 1,000 V Integrated Power Switch

            FSL4110LR 1,000 V Integrated Power Switch
                    onsemi offers its 1,000 V integrated power switch with line OVP and no bias winding for 9 W offline flyback converters
    

Image of Fairchild's FSL4110LR 1,000 V Integrated Power Switch onsemi's FSL4110LR is an integrated pulse width modulation (PWM) controller and 1,000 V avalanche rugged SenseFET specifically designed for high input voltage offline switching mode power supplies (SMPS) with minimal external components. V_CC can be supplied through the 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.

Features
Built-in avalanche rugged 1,000 V SenseFET Precise fixed operating frequency: 50 kHz V_CC 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 Fixed 1.6 s restart time for safe auto-restart mode of all protections		Various protection functions: 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 Built-in internal startup and soft-start circuit