SiFirst SF5773S
SF5773S is a high performance, 2nd Generation Quasi-Resonant (QR-IITM) PWM conFEATURES
● Easily Meet EPS Level 6● AC Brownout Protection (BOP)
● Proprietary QR-IITM Technology:
●Digital Anti-jitter for Audio Noise Free Operation
● Digital Frequency Foldback
● Digital Frequency Jittering for Better EMI
● Less than 100mW Standby Power
● Multi-Mode Operation for High Efficiency
● 12.7us Maximum On Time
● 80KHz Maximum Frequency Limit
● 52KHz Frequency Low Clamping in QR Mode
● 65% Maximum Duty Cycle
● Adaptive Slope Compensation for CCM Mode
● Built-in Soft Start Function
● Pin Floating Protection
● Built-in Synchronous Slope Compensation
● Cycle-by-Cycle Current Limiting
● Leading Edge Blanking (LEB)
● Constant Power Limiting
● VDD UVLO, OVP & Clamp
APPLICATIONS
Offline AC/DC Flyback Converter for● AC/DC Adaptors
● SMPS Power Supply
GENERAL DESCRIPTION