Description
The STR-X6768N 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
⪠Standby mode ⇒ Lowers input power at very light output load condition
⪠Avalanche-guaranteed MOSFET ⇒ Improves system-level reliability and does not require VDSS derating
⪠800 VDSS / 1.00 Ω RDS(on)
⪠Various protections ï Improved system-level reliability
â« Pulse-by-pulse drain overcurrent limiting
â« Overvoltage Protection (bias winding voltage sensing), with latch
â« Overload Protection with latch
â« Maximum on-time limit
Applications include the following:
⪠Set Top Box
⪠LCD PC monitor, LCD TV
⪠Printer, Scanner
⪠SMPS power supplies
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