The STRF6628 is a quasi-resonant flyback converter IC from Sanken, designed for switched-mode power supply (SMPS) applications. This IC integrates a power MOSFET and control circuitry to simplify power supply design and improve efficiency. Its quasi-resonant operation minimizes switching losses and reduces electromagnetic interference (EMI).

Applications

• Power supplies for LCD TVs
• Adapters for various electronic devices
• Power supplies for set-top boxes
• DVD players

Features

• Quasi-Resonant Operation
• Integrated Power MOSFET
• Overcurrent Protection (OCP)
• Overvoltage Protection (OVP)
• Thermal Shutdown Protection (TSD)
• Soft-Start Function

Benefits

• High efficiency leads to reduced power consumption and heat generation.
• Simplified design reduces BOM cost and development time.
• Integrated protection features enhance system reliability.
• Low noise operation minimizes EMI.
• Soft-start limits inrush current, increasing component lifespan.

Additional Details

The STRF6628 utilizes quasi-resonant switching to minimize switching losses and improve efficiency. The integrated MOSFET helps in reducing the number of external components. Built-in protection functions such as OCP, OVP, and TSD ensure safe operation under fault conditions. The soft-start function limits the inrush current at startup, minimizing stress on components. The device typically comes in a through-hole package and may require a heatsink for optimal performance. Ensure proper selection of external components to meet specific application requirements.