FSQ510MX

FSQ510 / FSQ510MX — Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter January 2014 FSQ510 / FSQ510MX Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter – Low EMI and High Efficiency Features  Uses an LDMOS Integrated Power Switch  Optimized for Valley Switching Converter (VSC)  Low EMI through Variable Frequency Control and Inherent Frequency Modulation Description A Valley Switching Converter ( VSC) generally s hows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. The FSQ510 is an i ntegrated Valley Switching Pulse Width Modulation (VS-PWM) controller and SenseFET specifically designed for offline Switch-Mode Power Supplies (SMPS) for valley switching with m inimal ex ternal c omponents. T he VSPWM controller includes an integrated oscillator, undervoltage lockout (UVLO), leading-edge blanking (LEB), optimized gate dr iver, i nternal s oft-start, t emperaturecompensated precise c urrent s ources f or l oop compensation, and self-protection circuitry. Compared w ith di screte M OSFET and P WM c ontroller solutions, th e FS Q510 can reduce total cost, component count, size and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a platform for cost-effective designs of a valley switching flyback converters.  High Efficiency through Minimum Drain Voltage Switching  Extended Valley Switching f...