FSCQ0565RT Series

650V Integrated Power Switch for 60Watt offline flyback converters

Catalog

650V Integrated Power Switch for 60Watt offline flyback converters

Part	Output Isolation	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Supplier Device Package	Fault Protection	Package / Case	Frequency - Switching	Duty Cycle	Power (Watts)	Voltage - Breakdown	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Topology	Control Features	Voltage - Start Up	Internal Switch(s)
ON Semiconductor FSCQ0565RTYDTU	Isolated	20 V	9 V	TO-220F-5L (Forming)	Current Limiting Over Load Over Temperature Over Voltage	TO-220-5 Full Pack Formed Leads	20 kHz	95 %	70 W	650 V	Through Hole	85 C	-25 °C	Flyback	Sync	15 V

Catalog

650V Integrated Power Switch for 60Watt offline flyback converters

Key Features

• Optimized for Quasi-Resonant Converter (QRC)

• Advanced Burst-Mode Operation for under 1 W Standby Power Consumption

• Pulse-by-Pulse Current Limit

• Overload Protection (OLP) – Auto Restart

• Over-Voltage Protection (OVP) – Auto Restart

• Abnormal Over-Current Protection (AOCP) – Latch

• Internal Thermal Shutdown (TSD) – Latch

• Under-Voltage Lockout (UVLO) with Hysteresis

• Low Startup Current (Typical: 25 μA)

• Internal High Voltage SenseFET

• Built-in Soft-Start (20 ms)

• Extended Quasi-Resonant Switching

Description

A Quasi-Resonant Converter (QRC) typically shows lower EMI and higher power conversion efficiency compared to a conventional hard-switched converter with a fixed switching frequency. Therefore, a QRC is well suited for noise-sensitive applications, such as color TV and audio. Each product in the FSCQ series contains an integrated Pulse Width Modulation (PWM) controller and a SenseFET. This series is specifically designed for quasi-resonant off-line Switch Mode Power Supplies (SMPS) 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 a discrete MOSFET and PWM controller solution, the FSCQ series can reduce total cost, component count, size, and weight; while increasing efficiency, productivity, and system reliability. These devices provide a basic platform for cost-effective designs of quasi-resonant switching flyback converters.