STRW6756

STR-W6756 Quasi-Resonant Topology Primary Switching Regulators Features and Benefits Description ▪ Quasi-resonant topology IC  Low EMI noise and soft The STR-W6756 is a quasi-resonant topology IC designed for switching SMPS applications. It shows lower EMI noise characteristics ▪ Bottom-skip mode  Improved system efficiency over than conventional PWM solutions, especially at greater than the entire output load by avoiding increase of switching 2 MHz. It also provides a soft-switching mode to turn on the frequency ▪ Auto-Standby mode  Lowers input power at very light s output load condition n ▪ Avalanche-guaranteed MOSFET  Improves system-level ig reliability and does not require VDSS derating s ▪ 650 V / 0.73 Ω e ▪ Various protections  Improved system-level reliability D Continued on the next page… w Package: 6-pin TO-220 ended for Ne Not to scale internal MOSFET at close to zero voltage (VDS bottom point) by use of the resonant characteristic of primary inductance and a resonant capacitor. The package is a fully molded TO-220, which contains the controller chip (MIC) and MOSFET, enabling output power up to 140 W with universal input or 240 W with a 230 VAC input. The bottom-skip mode skips the first bottom of VDS and turns on the MOSFET at the second bottom point, to minimize an increase of operating frequency at light output load, improving system-level efficiency over the entire load range. There are two standby modes available to reduce the input power un...