FSD1000 ,Green FPS for PC SMPSFSD1000TMCombo Fairchild Power Switch (FPS )
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FSD1000
Green FPS for PC SMPS
Features Current Mode Control for Main PowerV oltage Mode Control for Auxiliary Power Synchronized switching of Main and Auxiliary Power
(70kHz) Internal Start-up Circuit Internal Soft Start for Auxiliary Power User Defined Soft Start for Main Power Pulse by Pulse Current Limiting Over Load Protection (Main : Latch Mode, Aux : Auto
Restart Mode) Internal Over Temperature Protection Vcc Under V oltage Lockout Line Under voltage/ Over Voltage Lockout Burst Mode Operation for auxiliary power to reduce the
Power Consumption in the Standby Mode Internal High Voltage SenseFET for auxiliary power
Application SMPS for PC power LCD TV Power Supply
DescriptionFSD1000 is a Fairchild Power Switch (FPS) that is specially
designed for SMPS of personal computer. This device is a
high voltage power SenseFET combined with two PWM
controllers in a single monolithic device; One is for main power
and the other is for auxiliary power. The PWM controllers
feature integrated oscillator, under voltage lockout,
optimized gate driver and temperature compensated precise
current sources for the loop compensation. This device also
includes various fault protection circuits such as line under/
over voltage lock out, over voltage protection, over load
protection and over temperature protection. Compared with
discrete MOSFET and PWM controller solution, FSD1000
can reduce total cost, component count, size and weight
simultaneously increasing efficiency, productivity and
system reliability
Typical Circuit
