FSL4110LR Series

1000V Integrated Power Switch with Line OVP and no bias winding for 9Watt offline flyback converters

Catalog

1000V Integrated Power Switch with Line OVP and no bias winding for 9Watt offline flyback converters

Part	Package / Case	Fault Protection	Internal Switch(s)	Power (Watts)	Output Isolation	Mounting Type	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Frequency - Switching	Voltage - Breakdown	Duty Cycle	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Start Up	Supplier Device Package	Topology
ON Semiconductor FSL4110LRLX	8-SMD (7 Leads) Gull Wing	Current Limiting Over Load Over Temperature Over Voltage		9 W	Isolated	Surface Mount	27 V	8 V	50 kHz	1000 V	67 %	-40 °C	125 ¯C	12 V	7-LSOP	Flyback

Catalog

1000V Integrated Power Switch with Line OVP and no bias winding for 9Watt offline flyback converters

Key Features

• Built-in Avalanche Rugged 1000 V SenseFET

• Precise Fixed Operating Frequency: 50 kHz

• VCCcan be supplied from either bias-winding or self-biasing.

• Soft Burst-Mode Operation Minimizing 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. Under-Voltage Lockout (UVLO) and Line Over-Voltage Protection (LOVP) with Hysteresis.

• Built-in Internal Startup and Soft-Start Circuit

• Fixed 1.6 s Restart Time for Safe Auto-Restart Mode of All Protections

Description

The FSL4110LR is an integrated pulse width modulation (PWM) controller and 1000 V avalanche rugged SenseFET specifically designed for high input voltage offline Switching Mode Power Supplies (SMPS) with minimal external components. VCCcan be supplied through integrated high-voltage power regulator without auxiliary bias winding.The integrated PWM controller includes a fixed-frequency oscillator, Under-Voltage Lockout (UVLO), Leading-Edge Blanking (LEB), optimized gate driver, soft-start, temperature-compensatedprecise current sources for loop-compensation, and variable protection circuitry.Compared with a discrete MOSFET and PWM controller solution, the FSL4110LR reduces total cost, component count, PCB 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.