FAN604: Offline Quasi-Resonant PWM Controller

Datasheet: FAN604-D.pdf
Rev. A (1103kB)
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The FAN604 is an advanced PWM controller aimed at achieving power density of ≥10W/in 3 in universal input range AC/DC flyback isolated power supplies. It incorporates Quasi - Resonant (QR) control with proprietary Valley Switching with a limited frequency variation. QR switching provides high efficiency by reducing switching losses while Valley Switching with a limited frequency variation bounds the frequency band to overcome the inherent limitation of QR switching. FAN604 features mWSaver® burst mode operation with extremely low operating current (300 μA) and significantly reduces standby power consumption to meet the most stringent efficiency regulations such as Energy Star’s 5 - Star Level and CoC Tier II specifications . FAN604 includes several user configurable features aimed at optimizing efficiency, EMI and protections. FAN604 has a wide blanking frequency range that improves light load efficiency and eliminating audio noise for adaptive application. It incorporates user - configurable constant current reference , which allows controlling the maximum output current from primary - side , thereby optimizing transformer design to improve the overall efficiency . It also includes several rich programmable protection features such as over - voltage protection (OVP), precise constant output current regulation (CC).
  • Higher Average Efficiency by Quasi-Resonant Switching Operation with Wide Blanking Time Range
  • mWSaver® Technology for Ultra Low Standby Power Consumption (<20mW)
  • Forced and Inherent Frequency Modulation of Valley Switching for Low EMI Emissions and Common Mode Noise
  • Built-In and User Configurable Over-Voltage Protection (OVP), Under-Voltage Protection (UVP) and Over-Temperature Protection (OTP)
  • Programmable Over-Temperature-Protection through External NTC Resistor
  • Fully Programmable Brown-In and Brownout Protection
  • Built-In High-Voltage Startup to Reduce External Components
  • This product is general usage and suitable for many different applications.
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FAN604MX Last Shipments
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FAN604 SOIC-10 751EE 3 260 Tape and Reel 2500  
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 5,000
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