Sanken STRL472 Power IC

Sanken STRL472 Power IC

The STR-L472 is a highly integrated off-line switch mode power supply (SMPS) control IC designed for quasi-resonant (QR) and pulse ratio control (PRC) applications. Developed by Sanken, this IC combines a high-voltage power MOSFET and a control circuit in a single monolithic package, offering a compact and efficient solution for medium-power AC–DC converters.

The STR-L472 simplifies design by reducing external component count while maintaining excellent efficiency and reliability. It operates in quasi-resonant mode, minimizing switching losses and electromagnetic noise, making it suitable for energy-efficient and low-noise power supplies.

Click here to view related products

Features

• Integrated PWM controller and high-voltage MOSFET
• Quasi-resonant (QR) and Pulse Ratio Control (PRC) operation
• Built-in start-up and bias circuitry for simplified design
• High avalanche energy capability for rugged performance
• Comprehensive protection features including:
• Overvoltage protection (OVP)
• Overcurrent protection (OCP)
• Thermal shutdown (TSD)
• Auto-restart and latch-off protection modes
• Low standby power consumption for high-efficiency applications
• Compact SIP-10L package with excellent thermal dissipation

Applications

• AC–DC converters in home appliances and office equipment
• Standby power supplies for TVs, monitors, and consumer electronics
• Industrial control modules and chargers
• Medium-power flyback converters
• Energy-efficient and low-noise SMPS designs

STRL472 Datasheet