FSD176MRT Series

650V Integrated Power Switch with Abnormal OCP for 70Watt offline flyback converters

Catalog

650V Integrated Power Switch with Abnormal OCP for 70Watt offline flyback converters

Part	Mounting Type	Supplier Device Package	Fault Protection	Package / Case	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Output Isolation	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching	Power (Watts)	Duty Cycle	Voltage - Start Up	Voltage - Breakdown	Internal Switch(s)	Topology
ON Semiconductor FSD176MRTUDTU	Through Hole	TO-220F-6L (U-Forming)	Current Limiting Over Load Over Temperature Over Voltage Short Circuit	TO-220-6 Full Pack Formed Leads	7.5 V	26 V	Isolated	-40 °C	125 ¯C	67 kHz	90 W	67 %	12 V	650 V		Flyback
ON Semiconductor FSD176MRTLDTU	Through Hole	TO-220F-6L (L-Forming)	Current Limiting Over Load Over Temperature Over Voltage Short Circuit	TO-220-6 Full Pack Formed Leads	7.5 V	26 V	Isolated	-40 °C	125 ¯C	67 kHz	90 W	67 %	12 V	650 V		Flyback

Catalog

650V Integrated Power Switch with Abnormal OCP for 70Watt offline flyback converters

Key Features

• Advanced Soft Burst-Mode Operation for Low Standby Power and Low Audible Noise

• Random Frequency Fluctuation for Low EMI

• Pulse-by-Pulse Current Limit

• Various Protection Functions: Overload Protection (OLP), Over-Voltage Protection (OVP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) with Hysteresis, Output-Short Protection (OSP), and Under-Voltage Lockout (UVLO) with Hysteresis

• Low Operating Current (0.4mA) in Burst Mode

• Internal Startup Circuit

• Internal High-Voltage SenseFET: 650V

• Built-in Soft-Start: 15ms

• Auto-Restart Mode

Description

The FSD176MRT is an integrated Pulse Width Modulation (PWM) controller and SenseFET specifically designed for offline Switch-Mode Power Supplies (SMPS) with minimal external components. 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 loop compensation, and self-protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSD176MRT 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 design of a flyback converter.