Q0565R Datasheet – Green-Mode Power Switch – Fairchild

Part Number: FSQ0565R, Marking : Q0565R, QO565R

Function: Green-Mode Fairchild Power Switch (FPS) for Quasi-Resonant Operation

Package: TO-220F-6L Type

Manufacturer: Fairchild Semiconductor


Q0565R power switch fairchild

FSQ0565R datasheet



A Quasi-Resonant Converter (QRC) generally shows lower EMI and higher power conversion effiency 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).


Q0565R datasheet pinout


1. Optimized for Quasi-Resonant Converter (QRC)
2. Low EMI through Variable Frequency Control and AVS (Alternating Valley Switching)
3. „High-Efficiency through Minimum Voltage Switching
4. „Narrow Frequency Variation Range over Wide Load and Input Voltage Variation
5. „Advanced Burst-Mode Operation for Low Standby Power Consumption
6. „Simple Scheme for Sync Voltage Detection
7. „Pulse-by-Pulse Current Limit

Internal Block Diagram

block diagram

Q0565R Datasheet


Q0565R pdf

Other data sheets are available within the file: FSQ0565RQLDTU, FSQ0565RQWDDTU, FSQ0765R, Q0765R

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