FSL4110LRN

FAIRCHILD SEMICONDUCTOR  FSL4110LRN  控制器, PWM 反激, 27V电源, 50 kHz, 520mA输出, DIP-7

The 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.

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Built-in avalanche rugged 1000V SenseFET

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50kHz Precise fixed operating frequency

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

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Soft burst-mode operation minimizing audible noise

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Random frequency fluctuation for low EMI

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Pulse-by-pulse current limit

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Built-in internal startup and soft-start circuit

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

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Overload protection OLP

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Over-voltage protection OVP

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Abnormal over-current protection AOCP

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Internal thermal shutdown TSD with hysteresis

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