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FSQ0565RQ

ON Semiconductor
Part Number FSQ0565RQ
Manufacturer ON Semiconductor
Description Green-Mode Power Switch
Published Jun 21, 2020
Detailed Description FSQ0565RS/RQ — Green-Mode Power Switch for Quasi-Resonant Operation FSQ0565RS/RQ Green-Mode Power Switch for Quasi-Reso...
Datasheet PDF File FSQ0565RQ PDF File

FSQ0565RQ
FSQ0565RQ

Overview
FSQ0565RS/RQ — Green-Mode Power Switch for Quasi-Resonant Operation FSQ0565RS/RQ Green-Mode Power Switch for Quasi-Resonant Operation - Low EMI and High Efficiency Features ! Optimized for Quasi-Resonant Converters (QRC) ! Low EMI through Variable Frequency Control and AVS (Alternating Valley Switching) ! High-Efficiency through Minimum Voltage Switching ! Narrow Frequency Variation Range over Wide Load and Input Voltage Variation ! Advanced Burst-Mode Operation for Low Standby Power Consumption ! Simple Scheme for Sync Voltage Detection ! Pulse-by-Pulse Current Limit ! Various Protection Functions: Overload Protection (OLP), Over-Voltage Protection (OVP), Internal Thermal Shutdown (TSD) with Hysteresis, Output Short Protection (OSP) ! Under-Voltage Lockout (UVLO) with Hysteresis ! Internal Startup Circuit ! Internal High-Voltage Sense FET (650V) ! Built-in Soft-Start (17.
5ms) Applications ! Power Supply for LCD TV and Monitor, VCR, SVR, STB, and DVD & DVD Recorder ! Adapter 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 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), LeadingEdge 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 for cost-effective designs of quasi-resonant switching flyback converters.
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