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This literature is subject to all applicable copyright laws and is not for resale in any manner.FAN6224 Synchronous Rectification Controller for Flyback and Forward Freewheeling Rectification September 2015 FAN6224 Synchronous Rectification Controller for Flyback and Forward Freewheeling Rectification Features Description mWSaver Technology: FAN6224 is a secondary-side Synchronous Rectification (SR) controller to drive SR MOSFET for improved - Internal Green Mode to Stop SR Switching for efficiency. The IC is suitable for flyback converters and Lower No-Load Power Consumption forward freewheeling rectification. - 300 A Ultra-Low Green Mode Operating Current FAN6224 can be applied in Continuous or Discontinuous Conduction Mode (CCM and DCM) and Synchronous Rectification Controller Quasi-Resonant (QR) flyback converters based on a Suited for High-Side and Low-Side of Flyback proprietary linear-predict timing-control technique. The Converters in QR, DCM, and CCM Operation benefits of this technique include a simple control method without current-sense circuitry to accomplish Suited for Forward Freewheeling Rectification noise immunity. PWM Frequency Tracking with Secondary-Side With PWM frequency tracking and secondary-side Winding Voltage Detection winding voltage detection, FAN6224 can operate in both 140 kHz Maximum Operation Frequency fixed- and variable-frequency systems up to 140kHz. V Pin Over-Voltage Protection (OVP) DD FAN6224 detects output load condition and determines adjustable loading levels for Green Mode. In Green LPC Pin Open/Short Protection Mode, the SR controller stops all SR switching operation RES Pin Open/Short Protection to reduce the operating current. Power consumption is maintained at a minimum level in light-load condition. RP Pin Open/Short Protection Internal Over-Temperature Protection (OTP) SOP-8 Package Available Applications AC-DC NB Adapters Open-Frame SMPS Ordering Information Operating Packing Part Number Package Temperature Range Method FAN6224M -40C to +105C 8-Lead, Small Outline Package (SOP-8) Tape & Reel 2013 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6224 Rev. 1.4