Description

The STR-W6753 is a quasi-resonant topology IC designed for SMPS applications. It shows lower EMI noise characteristics than conventional PWM solutions, especially at greater than 2 MHz. It also provides a soft-switching mode to turn on the internal MOSFET at close to zero voltage (VDSbottom point) by use of the resonant characteristic of primary inductance and a resonant capacitor.

Features and Benefits

▪ Quasi-resonant topology IC => Low EMI noise and soft

switching

▪ Bottom-skip mode => Improved system efficiency over the entire output load

by avoiding increase of switching frequency

▪ Auto-Standby mode=>Lowers input power at very light output load condition

▪ Avalanche-guaranteed MOSFET=>Improves system-level reliability

and does not require VDSSderating

▪ 650 V / 1.70 Ω

▪ Various protections=>Improved system-level reliability