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 the FSEZ1317A enables precise CC regulation and simplified circuit design for battery-charger applications. A lower-cost, smaller, and lighter charger results, compared to conventional designs or a linear transformer. To minimize standby power consumption, the proprietary green mode provides off-time modulation to linearly decrease PWM frequency under light-load conditions. Green mode assists the power supply in meeting power conservation requirements. By using the FSEZ1317A, a charger can be implemented with few external components and minimized cost.
●Features
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● Low Standby Power Under 30mW
● High-Voltage Startup
● Few External Components
● Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry
● Green-Mode: Linearly Decreasing PWM Frequency
● 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
