FSL538 Series

High Performance 800 V Off-line Switcher with HV Startup and SenseFET

Catalog

High Performance 800 V Off-line Switcher with HV Startup and SenseFET

Part	Power - Output	Current - Output	Utilized IC / Part	Supplied Contents	Outputs and Type	Outputs and Type	Main Purpose	Regulator Topology	Voltage - Input [Min]	Voltage - Input [Max]	Frequency - Switching	Board Type	Supplier Device Package	Internal Switch(s)	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Output Isolation	Power (Watts)	Voltage - Breakdown	Voltage - Start Up	Package / Case	Package / Case	Package / Case	Control Features	Mounting Type	Fault Protection
ON Semiconductor FSL538HFLYGEVB	21 W	660 mA	FSL538H	Board(s)	Non-Isolated	1	DC/DC Step Up or Down	Flyback	15 V	17 V	130 kHz	Fully Populated
ON Semiconductor FSL538APG											100 kHz		7-PDIP		-40 °C	125 ¯C	Flyback	Either	25 W	800 V	16 V	7.62 mm	0.3 in 7 Leads	8-DIP	EN Soft Start	Through Hole	Current Limiting Over Load Over Power Over Temperature Over Voltage

Catalog

High Performance 800 V Off-line Switcher with HV Startup and SenseFET

Key Features

• Rugged 800V FET with 3.8 Ω Typ.RDS(on) with Built-in HV current source for start up

• Fine-tunable Skip Mode Operation

• Integrated Line Compensation

• Line Brown-in, Brown-out Function

• Line Over-voltage Protection (LOVP)

• Fsw options: 100 & 130 kHz

• Seamless implementation of isolated and non-isolated topologies

• Peak Current: FSL538A = 860mA and FSL538H = 660 mA

Description

The FSL5x8A/H is an integrated peak-current-mode controlled pulse width modulation (PWM) power switch, specifically designed for off-line switch-mode power supplies. The PWM controller includes an advanced soft-start, frequency hopping, optimized gate driver, internal transconductance amplifier, temperature-compensated precise current source for loop compensation and enhanced self-protections circuitry as well. Compared with a discrete MOSFET and PWM controller solution, the FSL5x8A/H allows to reduce total cost, component count, size, and weight, while simultaneously increase efficiency, productivity, and system reliability. This device provides a basic platform for cost-effective design of both isolated and non-isolated Flyback converters.