• Quasi-Resonant (QR) mode operation: Valley turn-on of the primary MOSFET to achieve low switching losses 
• Output current is monitored by primary detection for reliable Over Current Protection and Short Circuit Protection
• PWM/PFM control for higher average efficiency
• Burst mode control for low no-load power and efficiency
• HV start up circuit is used to reduce no-load power
• Maximum frequency limitation 125kHz
• Auto-Recovery OVP/OCP/SCP/OTP
• Integrated 700V MOSFET
• Compact package: SO8

SY22863 is a PWM/PFM controller with several features to enhance performance of Flyback converters that targeting at adapter or charger applications. It integrates a 700V MOSFET to decrease physical volume and drives Flyback controller in the Quasi-Resonant mode for higher efficiency and better EMI performance. SY22863 adopt burst mode control for improved efficiency and the output current is detected by internal primary detection technology to achieve more reliable Over Current Protection and Short Circuit Protection. The output voltage is achieved by secondary side control technology for good load and line regulation. SY22863 provides a fast internal HV start up circuit without consuming any standby power to achieve lowest no-load power consumption.