The STR-W6754 is a quasi-resonant regulator specifically designed to satisfy the requirements for increased integration and reliability in switch-mode power supplies. It incorporates a primary control and drive circuit with an avalanche-rated power MOSFET. The regulator exhibits only low-level high-frequency EMI noise because of soft switching of the MOSFET close to ground (bottom point). A bottom-skip function minimizes an increase of operational frequency during light loads to improve system efficiency over the entire load range.
FEATURES ANDBENEFITS
■Rugged 650 V Avalanche-Rated MOSFET
Simplified Surge Absorption
No VDSSDerating Required
■0.96 ΩMaximum rDS(on)
■Two Operational Modes by Automatic Switching:
Quasi-Resonant Mode for Normal Operation
Burst Mode for Standby Operation or Light Loads
■Automatic or Manually Triggered Burst Standby Input Power <0.1 W at No Load
■Low Operating Current (6 mA typ)
■Auto-Bias Function
Stable Burst Operation Without Generating Interference
■Internal Off-Timer Circuit
■Built-In Constant-Voltage Drive
■Multiple Protections:
Pulse-by-Pulse Overcurrent Protection
Overload Protection with Auto Recovery
Latching Overvoltage Protection
Undervoltage Lockout with Hysteresis
■RoHS Compliant