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Power Management
March 2006
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The 75 V MOSFETs are designed to shrink circuit size and increase power density in high power server AC/DC switch-mode power supplies (SMPS) with 12 V output or in 48 V rail O ring circuits. The 100-V devices are said to suit high power fly-back secondary rectification or offer enhanced primary-side efficiency in high power telecom isolated 48 V DC-DC converters. In addition, the MOSFETs can be used in stepper motor and brushless DC motor drive applications. The IRFB3077PbF is a 75 V MOSFET with 3.3 milliohm maximum device on-resistance, and enables a 30-percent part count reduction (from
10 TO-220 devices to seven TO-220 devices), with a reduced printed circuit board (PCB) area and heatsinking for higher power density in
3 kW server SMPS with 12 V output. The IRFB4110PbF is a 100 V MOSFET with 4.0 milliohm maximum device on-resistance, and can cut component count in half, reducing PCB area and reducing heatsink size. International Rectifier

International Rectifier


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