Green Mode Fairchild Power Switch
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PRELIMINARY DATASHEET
FSQ510, FSQ510H Green Mode Fairchild Power Switch (FPSTM) for Quasi-Resonant...
Description
www.DataSheet4U.com
PRELIMINARY DATASHEET
FSQ510, FSQ510H Green Mode Fairchild Power Switch (FPSTM) for Quasi-Resonant Converter
August 2006
FSQ510, FSQ510H — Green Mode Fairchild Power Switch (FPSTM) for Quasi-Resonant Converter – Low EMI and High Efficiency
Features Uses a DMOS Integrated Power Switch Optimized for Quasi-Resonant Converter (QRC) Low EMI through Variable Frequency Control and
Inherent Frequency Modulation
Applications Cell Phone Chargers Auxiliary Power Supplies for PC and White Goods Description
A Quasi-Resonant Converter (QRC) generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. The FSQ510(H) is an integrated Pulse-Width Modulation (PWM) controller and SenseFET specifically designed for quasi-resonant offline Switch Mode Power Supplies (SMPS) with minimal external components. The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), Leading Edge Blanking (LEB), optimized gate driver, internal soft start, temperaturecompensated precise current sources for loop compensation, and self-protection circuitry. Compared with discrete MOSFET and PWM controller solution, the FSQ510(H) 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...
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