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FAN302UL: Primary-Side-Regulation PWM Controller

Datasheet: FAN302UL
Rev. A (1408kB)
Product Overview
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This highly integrated PWM controller provides several features to enhance the performance of flyback converters. The constant-current-control, proprietary topology enables simplified designs without secondary feedback circuitry for battery-charger applications.
A proprietary Burst-Mode function with low operation current minimizes standby power consumption.
The FAN302UL controller also provides several protections. Cycle-by-cycle current limiting ensures the fixed peak current limit level, even if a short circuit occurs. The gate output is clamped at 15V to protect the power MOS from high gate-source voltage conditions. If either VS OVP or internal OTP is triggered, the circuit enters Latch Mode until AC power is removed.
Using FAN302UL, a charger can be implemented with few external components and minimized cost, compared to a conventional design or a linear transformer.
Features
 
  • Ultra-Low Standby Power: Under 20mW at 264VAC
  • Constant-Current (CC) Control without Secondary-Feedback Circuitry
  • Fixed PWM Frequency at 140kHz with Frequency Hopping to Solve EMI Problems
  • High-Voltage Startup
  • Low Operating Current: 3.5mA
  • Peak-Current-Mode Control in CV Regulation
  • Cycle-by-Cycle Current Limiting
  • VDD Over-Voltage Protection (Auto-Restart)
  • VS Over-Voltage Protection (Latch Mode)
  • VDD Under-Voltage Lockout (UVLO)
  • Gate Output Maximum Voltage Clamped at 15V
  • Fixed Over-Temperature Protection (Latch Mode)
  • Available in an 8-Lead SOIC Package
Applications
  • Mobile Handsets
Technical Documentation & Design Resources
Application Notes (1) Package Drawings (1)
Data Sheets (1)  
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FAN302ULMY Last Shipments
Pb-free
Halide free
FAN302UL SOIC-8 751EB 1 260 Tape and Reel 2500  
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 16,991
Case Outlines
751EB   
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