Description

The STR-X6737 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 (VDS bottom 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 VDSS derating

▪500 VDSS/ 0.36 ΩRDS(on)

▪Various protections Improved system-level reliability

  ▫Pulse-by-pulse drain overcurrent limiting

  ▫Overvoltage Protection (bias winding voltage sensing), with latch

  ▫Overload Protection with latch

  ▫Maximum on-time limit