FSEZ1317WA: Primary-Side-Regulation PWM with POWER MOSFET Integrated

Description: This third-generation Primary Side Regulation (PSR...
  • 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 FSEZ1317WA 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.
    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 FSEZ1317WA, a charger can be implemented with few external components and minimized cost.
  • 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 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
  • Applications
  • E-book Reader
  • External AC-DC Merchant Power Supply - Portable Consumer
  • External AC-DC Merchant Power Supply - Wireless Communications
  • Media Tablets
  • Mobile Handsets
  • PMP/MP3 Player
  • PMP/MP3 Players
  • Technical Documentation & Design Resources
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Primary-Side-Regulation PWM with POWER MOSFET Integrated
  • Package Type: SOIC-7
  • Package Case Outline: 751ED
  • MSL: 3
  • Container Type: REEL
  • Container Qty: 2500
  • Specifications
  • Topology: Flyback 
  • Phases:
  • Control Mode: Current Mode 
  • VCC Min (V): 15 
  • VCC Max (V): 17 
  • fSW Typ (kHz): 50 
  • Package Type: SOIC-7 
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