SMPS Power Switch(QRC), 5A, 650V, TO220F (Green)

A Quasi-Resonant Converter (QRC) FSQ0565R generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. The FSQ-series is an integrated Pulse-Width Modulation (PWM) controller and SenseFET specifically designed for quasi-resonant operation and Alternating Valley Switching (AVS). The PWM Controller includes an integrated fixed-frequency Oscillator Under-Voltage Lockout (UVLO), Leading- Edge Blanking (LEB), optimized Gate driver, internal softstart, temperature-compensated precise current sources for a loop compensation, and self-protection circuitry. Compared with a Discrete MOSFET and PWM Controller solution, the FSQ-series CAN reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform that is well suited for cost-effective designs of quasi-resonant switching flyback converters.
By Fairchild Semiconductor