The STRF6674 is a quasi-resonant flyback converter IC from Sanken Electric. It is designed for use in switched-mode power supplies (SMPS) applications, particularly those requiring high efficiency and low electromagnetic interference (EMI). The IC integrates a power MOSFET and control circuitry, which simplifies power supply design and reduces the number of external components.

Applications

• Power supplies for LCD and LED TVs
• AC adapters for laptops and other portable devices
• Power supplies for set-top boxes
• DVD players and recorders

Features

• Quasi-resonant operation for high efficiency and low EMI
• Integrated power MOSFET for simplified design and reduced component count
• Built-in overcurrent protection (OCP)
• Overvoltage protection (OVP)
• Thermal shutdown protection (TSD)
• Soft-start function

Benefits

• High energy efficiency, resulting in reduced power consumption and lower operating costs
• Simplified power supply design, which reduces development time and costs
• Improved system reliability due to integrated protection features
• Reduced EMI, minimizing interference with other electronic devices
• Compact power supply size due to high integration

Additional Details

The STRF6674 leverages quasi-resonant switching technology to minimize switching losses and improve overall efficiency. The integrated MOSFET offers fast switching and low on-resistance, contributing to high efficiency. The comprehensive protection features ensure robust operation under various fault conditions. The soft-start mechanism reduces stress on components during startup, extending the lifespan of the power supply. The device is designed for ease of use and provides a cost-effective solution for a wide range of power supply applications. Commonly comes in a through-hole package.