Description
●This third-generation Primary-Side-Regulation (PSR) and highly integrated PWM controller provides several features to enhance the performance of low-power flyback converters. The proprietary topology, TRUECURRENT® , of FSEZ1317A enables precise CC regulation and simplified circuit design for battery charger applications. A low-cost, smaller, and lighter charger results, as compared to a conventional design or a linear transformer.
●Features
●Low Standby Power Under 30mW
●High-Voltage Startup
●Fewest External Component Counts
●Constant-Voltage (CV) and Constant-Current (CC Control without Secondary-Feedback Circuitry
●Green-Mode: Linearly Decreasing PWM Frequenc
●Fixed PWM Frequency at 50kHz with Frequency Hopping to Solve EMI Problem
●Cable Compensation in CV Mode
●Peak-Current-Mode Control in CV Mode
●Cycle-by-Cycle Current Limiting
●VDD Over-Voltage Protection with Auto Restart
●VDD Under-Voltage Lockout (UVLO)
●Gate Output Maximum Voltage Clamped at 15V
●Fixed Over-Temperature Protection with Auto Restart
●Available in the 7-Lead SOP Package
●Applications
●Battery chargers for cellular phones, cordless phones, PDA, digital cameras, power tools, etc.
●Replaces linear transformers and RCC SMPS
