FSEZ1317 ,PSR Flyback PWM Controller with MOSFET Integrated for LED LightingApplications Battery chargers for cellular phones, cordless phones, PDA, digital cameras, power t ..
FSEZ1317 ,PSR Flyback PWM Controller with MOSFET Integrated for LED Lightingapplications. A low-cost, smaller, and lighter charger results, as compared to a conventional desig ..
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FSEZ1317
PSR Flyback PWM Controller with MOSFET Integrated for LED Lighting
FSEZ1317 — Primary-Side-Regulation PWM with POWER MOSFET Integrated January 2011 FSEZ1317 Primary-Side-Regulation PWM with POWER MOSFET Integrated Features Description This third-generation Primary-Side-Regulation (PSR) Low Standby Power Under 30mW and highly integrated PWM controller provides several High-Voltage Startup features to enhance the performance of low-power flyback converters. The proprietary topology, Fewest External Component Counts TRUECURRENT™, of FSEZ1317 enables precise CC Constant-Voltage (CV) and Constant-Current (CC) regulation and simplified circuit design for battery- Control without Secondary-Feedback Circuitry charger applications. A low-cost, smaller, and lighter charger results, as compared to a conventional design Green-Mode: Linearly Decreasing PWM Frequency or a linear transformer. Fixed PWM Frequency at 50kHz with Frequency To minimize standby power consumption, the Hopping to Solve EMI Problem proprietary green mode provides off-time modulation to Cable Compensation in CV Mode linearly decrease PWM frequency under light-load conditions. Green mode assists the power supply in Peak-Current-Mode Control in CV Mode meeting power conservation requirements. Cycle-by-Cycle Current Limiting By using the FSEZ1317, a charger can be implemented V Over-Voltage Protection with Auto Restart DD with few external components and minimized cost. A typical output CV/CC characteristic envelope is shown V Under-Voltage Lockout (UVLO) DD in Figure 1. Gate Output Maximum Voltage Clamped at 15V Fixed Over-Temperature Protection with Auto Restart Available in the 7-Lead SOP and DIP Packages Applications Battery chargers for cellular phones, cordless phones, PDA, digital cameras, power tools, etc. Replaces linear transformers and RCC SMPS Figure 1. Typical Output V-I Characteristic Ordering Information Operating Packing Part Number Package Temperature Range Method FSEZ1317MY -40°C to +105°C 7-Lead, Small Outline Package (SOP-7) Tape & Reel FSEZ1317NY -40°C to +105°C 7-Lead, Dual Inline Package (DIP-7) Tube © 2010 FSEZ1317 • Rev. 1.0.5
