FSQ0565RQ Series

650V Integrated Power Switch with Quasi-Resonant Operation for 60Watt offline flyback converters

Catalog

650V Integrated Power Switch with Quasi-Resonant Operation for 60Watt offline flyback converters

Part	Mounting Type	Voltage - Breakdown	Topology	Power (Watts)	Operating Temperature [Max]	Operating Temperature [Min]	Control Features	Fault Protection	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Frequency - Switching [Max]	Frequency - Switching [Min]	Supplier Device Package	Voltage - Start Up	Output Isolation	Package / Case
ON Semiconductor FSQ0565RQWDTU	Through Hole	650 V	Flyback	80 W	85 C	-25 °C	Sync	Current Limiting Over Load Over Temperature Over Voltage Short Circuit	20 V	8 V	67 kHz	48 kHz	TO-220F-6L	12 V	Isolated	TO-220-6 Full Pack Formed Leads
ON Semiconductor FSQ0565RWDTU	Through Hole	650 V	Flyback	80 W	85 C	-25 °C			20 V	8 V	67 kHz	48 kHz	TO-220F-6L (Forming)	12 V	Isolated	TO-220-6 Full Pack Formed Leads
ON Semiconductor FSQ0565RSLDTU	Through Hole	650 V	Flyback	80 W	85 C	-25 °C	Sync	Current Limiting Over Load Over Temperature Over Voltage Short Circuit	20 V	8 V	67 kHz	48 kHz	TO-220F-6L (L-Forming)	12 V	Isolated	TO-220-6 Full Pack Formed Leads
ON Semiconductor FSQ0565RQWDTU	Through Hole	650 V	Flyback	80 W	85 C	-25 °C	Sync	Current Limiting Over Load Over Temperature Over Voltage Short Circuit	20 V	8 V	67 kHz	48 kHz	TO-220F-6L (Forming)	12 V	Isolated	TO-220-6 Full Pack Formed Leads

Catalog

650V Integrated Power Switch with Quasi-Resonant Operation for 60Watt offline flyback converters

Key Features

• Optimized for Quasi-Resonant Converter (QRC)

• Low EMI through Variable Frequency Control and AVS(Alternating Valley Switching)

• High-Efficiency through Minimum Voltage Switching

• Narrow Frequency Variation Range over Wide Loadand Input Voltage Variation

• Advanced Burst-Mode Operation for Low StandbyPower Consumption

• Simple Scheme for Sync Voltage Detection

• Pulse-by-Pulse Current Limit

• Various Protection functions: Overload Protection(OLP), Over-Voltage Protection (OVP), Internal ThermalShutdown (TSD) with Hysteresis, Output ShortProtection (OSP)

• Under-Voltage Lockout (UVLO) with Hysteresis

• Internal Startup Circuit

• Internal High-Voltage Sense FET (650V)

• Built-in Soft-Start (17.5ms)

Description

A Quasi-Resonant Converter (QRC) 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 quasi-resonant operation and Alternating Valley Switching (AVS). The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), Leading- Edge Blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise current sources for a loop compensation, and self-protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSQ-series can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform for cost-effective designs of quasi-resonant switching flyback converters.