Fairchild FSD200 Manual

Also see for FSD200: Operator's manual

Contents

Fairchild FSD200 Manual Manual pdf 1 page image

©2003 Fairchild Semiconductor Corporationwww.fairchildsemi.comRev.1.0.0Features• Single Chip 700V SenseFET Power Switch• Precision Fixed Operating Frequency (134kHz)• Internal Start-up Switch and Soft Start• UVLO with Hysteresis (6V/7V)• Pulse by Pulse Current Limit• Over Load Protection• Internal Thermal Shutdown Function (Hysteresis)• Secondary Side Regulation• Auto-Restart Mode• Frequency Modulation for EMI• No Bias WindingApplications• Charger & Adaptor for Mobile Phone, PDA & MP3• Auxiliary Power for PC, C-TV & MonitorDescriptionThe FSD200 is specially designed for an off-line SMPS withminimal external components. The FSD200 is a monolithichigh voltage power switching regulator that combines anLDMOS SenseFET with a voltage mode PWM controlblock. The integrated PWM controller features: A fixedoscillator with frequency modulation for reduced EMI.Under voltage lock out. Leading edge blanking(LEB).Optimized gate turn-on/turn-off driver. Thermal shut downprotection. Temperature compensated precision currentsources for loop compensation and fault protection circuitry.Compared to a discrete MOSFET and controller or RCCswitching converter solution, an FSD200 can reduce totalcomponent count, design size, weight and at the same timeincrease efficiency, productivity, and system reliability. It isa basic platform well suited for cost effective design of fly-back converters.1.2.3.GND 4.Vfb 5.Vcc 7.Drain 8.Vstr7-DIPInternal Block DiagramRsenseIoverS/S3mS41, 2, 37OSCSRQTSDHis 50SRQLEBOLPResetUVLO Reset(Vcc<6V)DRIVERFrequencyModulation5uA 250uAVckVthSFETDrainGNDVfbBURSTV SDV BURST7V17UVLO VoltageRef.HV/REGINTERNALBIASON/OFFVstrVccFSD200Fairchild Power Switch(FPS)