Fairchild - RC5051

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Contents

SEMICONDUCTOR tm www fairchildsemi com Application Note 50 Implementing the RC5050 and RC5051 DC DC Converters on Pentium Pro Motherboards Introduction This document describes how to implement a switching volt age regulator using an RC5050 or an RC5051 high speed controller a power inductor a Schottky diode appropriate capacitors and external power MOSFETs This regulator forms a step down DC DC converter that can deliver up to 14 5A of continuous load current at voltages ranging from 1 3V to 3 5V A specific application circuit design consider ations component selection PCB layout guidelines and per formance evaluations are covered in detail In the past 10 years microprocessors have evolved at such an exponential rate that a modern chip can ...