FSQ0565R, FSQ0765R Green-Mode Farichild Power Switch (FPS) for Quasi-Resonant Operation June 2008 FSQ0565R, FSQ0765R Green-Mode Fairchild Power Switch (FPS) for Quasi-Resonant Operation - Low EMI and High Efficiency Features Description Optimized for Quasi-Resonant Converter (QRC) A Quasi-Resonant Converter (QRC) generally shows lower EMI and higher power conversion efficiency than a Low EMI through Variable Frequency Control and AVS (Alternating Valley Switching) conventional hard-switched converter with a fixed switching frequency. The FSQ-series is an integrated High-Efficiency through Minimum Voltage Switching Pulse-Width Modulation (PWM) controller and Narrow Frequency Variation Range over Wide Load SenseFET specifically designed for quasi-resonant and Input Voltage Variation operation and Alternating Valley Switching (AVS). The Advanced Burst-Mode Operation for Low Standby PWM controller includes an integrated fixed-frequency Power Consumption oscillator, Under-Voltage Lockout (UVLO), Leading- Simple Scheme for Sync Voltage Detection Edge Blanking (LEB), optimized gate driver, internal soft- Pulse-by-Pulse Current Limit start, temperature-compensated precise current sources Various Protection functions: Overload Protection for a loop compensation, and self-protection circuitry. (OLP), Over-Voltage Protection (OVP), Abnormal Compared with a discrete MOSFET and PWM controller Over-Current Protection (AOCP), Internal Thermal solution, the FSQ-series can reduce total cost, Shutdown (TSD) with Hysteresis, Output Short Protection (OSP) component count, size, and weight while simultaneously increasing efficiency, productivity, and system reliability. Under-Voltage Lockout (UVLO) with Hysteresis This device provides a basic platform for cost-effective Internal Start-up Circuit designs of quasi-resonant switching flyback converters. 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 Related Resourses Visit: FSQ0565R, FSQ0765R Green-Mode Farichild Power Switch (FPS) for Quasi-Resonant Operation Ordering Information (1) Maximum Output Power (2) Operating Current R 230V 15% 85-265V Replaces Product (5) DS(ON) AC AC PKG. Number Temp. Limit Max. Devices Open Open (3) (3) Adapter Adapter (4) (4) Frame Frame FSCM0565R FSQ0565R TO-220F-6L -40 to +85C 3.0A 2.2 70W 80W 41W 60W FSDM0565RB FSCM0765R FSQ0765R TO-220F-6L -40 to +85C 3.5A 1.6 80W 90W 48W 70W FSDM0765RB Notes: 1. The junction temperature can limit the maximum output power. 2. 230V or 100/115V with doubler. AC AC 3. Typical continuous power in a non-ventilated enclosed adapter measured at 50C ambient temperature. 4. Maximum practical continuous power in an open-frame design at 50C ambient. 5. These parts are RoHS compliant. 2008 Fairchild Semiconductor Corporation www.fairchildsemi.com FSQ0565R, FSQ0765R Rev. 1.0.1 2