SiFirst SF5920S
High Performance Primary Side Regulation (PSR) CV/CC Controller
FEATURES
● Multi-Mode Control● Max. Frequency Clamping to Limit Power MOSFET Vds Spike @ Output Short Circuit
● Low Standby Power Under 70mW, Easily to Pass Energy Star EPS2.0
● Audio Noise Free Operation
● Primary Side Regulation (PSR) without TL431 and Opto-Coupler
● ± 5% Constant Current (CC) and Constant Voltage (CV) Regulation at Universal AC Input
● Proprietary Cable Voltage Drop Compensation in CV Mode
● Compensate for Line Voltage Variation and Transformer Inductance Tolerances
● Built-in Control Loop Compensation in CV Mode
● Pin Floating Protection
● Cycle-by-Cycle Current Limiting
● Built-in Leading Edge Blanking (LEB)
● Built-in Soft Start
● Output Over Voltage Protection
● VDD OVP & Clamp
● VDD Under Voltage Lockout (UVLO)
APPLICATIONS
● Battery chargers for cellular phones, cordless phones, PDA, digital cameras, etc● Replaces linear t