FAN6756: mWSaver™ PWM Controller for Flyback Converter, 65KHz, X-Cap discharge

Description: The FAN6756 is a next-generation Green Mode PWM co...
  • The FAN6756 is a next-generation Green Mode PWM controller with innovative mWSaver™ technology, which dramatically reduces standby and no-load power consumption, enabling conformance to worldwide Standby Mode efficiency guidelines.
    An innovative AX-CAP™ method minimizes losses in the EMI filter stage by eliminating the X-cap discharge resistors while meeting IEC61010-1 safety requirements. Standby Mode clamps feedback voltage and modulates feedback impedance with a impedance modulator during Burst Mode operation, which forces the system to operate in a “deep” Burst Mode with minimum switching losses.
    Protections ensure safe operation of power system in various abnormal conditions. Proprietary asynchronous jitter decreases EMI emission and built-in synchronized slope compensation allows more stable Peak-Current-Mode control over wide range of input voltage and load conditions. The proprietary internal line compensation ensures constant output power limit over entire universal line voltage range.
    Requiring a minimum number of external components, FAN6756 provides a basic platform that is well suited for cost-effective flyback converter designs that require extremely low standby power consumption.
  • Features
  • Single-Ended Topologies, such as Flyback and Forward Converters
  • mWSaver™ Technology
  • Achieves Low No-Load Power Consumption: Less than 30mW at 230VAC (EMI Filter Loss Included)
  • Eliminates X Capacitor Discharge Resistor Loss with AX-CAP™ Technology
  • Linearly Decreases Switching Frequency to 23KHz
  • Burst Mode Operation at Light-Load Condition
  • Impedance Modulation in Standby Mode for “Deep” Burst Mode Operation
  • Low Operating Current (450µA) in Standby Mode
  • 500V High-Voltage JFET Startup Circuit to Eliminate Startup Resistor Loss
  • Highly Integrated with Rich Features
  • Proprietary Asynchronous-Jitter to Reduce EMI
  • High-Voltage Sampling to Detect Input Voltage
  • Peak-Current-Mode Control with Slope Compensation
  • Cycle-by-Cycle Current Limiting with Line Compensation
  • Built-In 8ms Soft-Start
  • Leading Edge Blanking (LEB)
  • Brown-In/Brownout Recovery
  • Advanced Protections
  • VDD Under-Voltage Lockout (UVLO)
  • Internal Overload/Open-Loop Protection (OLP)
  • Over-Temperature Protection (OTP)
  • VDD Over-Voltage Protection (VDD OVP)
  • Current-Sense Short-Circuit Protection (SSCP)
  • Applications
  • Notebook PC
  • LCD Monitor
  • LCD TV
  • Technical Documentation & Design Resources
    Availability and Samples
    FAN6756MRMY
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: mWSaver™ PWM Controller for Flyback Converter, 65KHz, X-Cap discharge
  • Package Type: SOIC-8
  • Package Case Outline: 751EB
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Specifications
  • Topology: Flyback 
  • Phases: 4/5/6 
  • Control Mode: Current Mode 
  • VCC Min (V): 16 
  • VCC Max (V): 18 
  • fSW Typ (kHz): 65 
  • Package Type: SOIC-8 
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