Description

The STR-X6759N 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.

   ▪Set Top Box

   ▪LCD PC monitor, LCD TV

  ▪Printer, Scanner

  ▪SMPS power supplies 

Features and Benefits

▪Quasi-resonant topology IC ⇒  Low EMI noise and softswitching

▪Bottom-skip mode ⇒ Improved system efficiency over the entire output load by avoiding increase of switching frequency

▪Standby mode ⇒ Lowers input power at very light output load condition

▪Avalanche-guaranteed MOSFET ⇒ Improves system-level reliability and does not require VDSS derating

▪650 VDSS/ 0.385 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