Quasi-Resonant Topology Primary Switching Regulators

The STR-W6765 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 operation 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.
The package is a fully molded TO-220, which contains the controller chip (MIC) and MOSFET enabling output power up to 52 W with universal input or 110 W with a 230 Vac input. The bottom-skip function skips the first bottom of VDS and turns on the MOSFET at the second bottom point, to minimize an increase of operational frequency at light output load, improving system-level efficiency over the entire load range.
By Allegro MicroSystems, Inc.
STR-W6765 's PackagesSTR-W6765 's pdf datasheet



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STR-W6765 Application circuits
STR-W6765 circuits
This is one application circuit of STR-W6765,If you need more circuits,please download STR-W6765's pdf datasheet.


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