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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 shows
lower EMI and higher power conversion efficiency than
a conventional hard-switched converter with a fixed
switching frequency. The FSQ510 is an integrated
Valley Switching Pulse Width Modulation (VS-PWM)
controller and SenseFET specifically designed for
offline Switch-Mode Power Supplies (SMPS) for valley
switching with minimal external components. The VS-
PWM controller includes an integrated oscillator, under-
voltage lockout (UVLO), leading-edge blanking (LEB),
