onsemi FSQ0365RL

650V Integrated Power Switch with Valley Switching control for 19Watt offline flyback converters

Switching Regulator, Current-mode, 1.68A, 67kHz Switching Freq-Max, PDSO8

Switch Products SMPS Power switch

IC SWIT PWM GREEN OVP UVLO 8SOP

IC OFFLINE SWITCH FLYBACK 8LSOP

POWER SWITCH SMPS GREEN, SMD, LSOP8; Primary Input Voltage:15V; No. of Outputs:1; Output Voltage:700V; Output Current:1.5A; Voltage Regulator Case Style:LSOP; No. of Pins:8; Operating Temperature Range:-25°C to +85°C; SVHC:No SVHC (20-Jun-2011); Base Number:0365; Enc Power Output @ 230VAC:17.5W; Enc Power Output @ 85-265VAC:13W; Frequency:55.6kHz; On Resistance Rds(on):3.5ohm; Operating Temperature Max:85°C; Operating Temperature Min:-25°C; Output Current Max:1.5A; Output Voltage Max:700V; Package / Case:LSOP; Power Dissipation Pd:1.5W; Power Dissipation Pd:1.5W; Power Output Open Framed @ 230VAC:25W; Power Output Open Framed @ 85-265VAC:19W; Power Supply Type:SMPS; Supply Voltage Max:20V; Termination Type:SMD; Voltage Vcc:15V

A Valley Switching Converter generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. The FSQ-series is an integrated Pulse-Width Modulation (PWM) controller and SenseFET specifically designed for valley switching operation with minimal external components. The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout, Leading Edge Blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise current sources for loop compensation, and self-protection circuitry. Compared with discrete MOSFET and PWM controller solutions, the FSQ-series reduces total cost, component count, size and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform that is well suited for cost-effective designs of valley switching fly-back converters.