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.
Low Standby Power Under 30mW
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
External AC-DC Merchant Power Supply - Portable Consumer
External AC-DC Merchant Power Supply - Wireless Communications
Technical Documentation & Design Resources
Availability and Samples
Compliance: Pb-free Halide free
Description: Primary-Side-Regulation PWM with POWER MOSFET Integrated
Package Type: SOIC-7
Package Case Outline: 751ED
Container Type: REEL
Container Qty: 2500
VCC Min (V):
VCC Max (V):
fSW Typ (kHz):