General Description
The FD6M043N08 is one product in the Power-SPMTM family that Fairchild has newly developed and designed to be most suitable for more compact and more efficient synchronous rectification applications such as internet server power supplies and telecom system power supplies. For higher efficiency, it includes built-in very low RDS(ON) MOSFETs. This Power-SPM device can be used in the secondary side of the PWM transformer of forward/bridge converter to provide high current rectification at output voltages ranging from 12 Volts down to 5 Volts. With this product, it is possible to design the secondary side of power supply systems with reduced parasitic elements resulting in minimized voltage spike and EMI noise.

General Features
• Very High Rectification Efficiency at Output 12V
• Integrated Solution for Saving Board Space
• RoHS Compliant

MOSFET Features
• VDSS = 75V
• QG(TOTAL) = 99nC(Typ.), VGS = 10V
• RDS(ON) = 3.5mΩ(Typ.), VGS = 10V, ID = 40A
• Low Miller Charge
• Low Qrr Body Diode
• UIS Capability (Single Pulse and Repetitive Pulse)
• Fully Isolated Package

Applications
• High Current Isolated Converter
• Distributed Power Architectures
• Synchronous Rectification
• DC/DC Converter
• Battery Supplied Application
• ORing MOSFET