Chapter 12

Efficient, compact 2-phase power supply delivers 40A to Intel mobile CPUs

David Chen

Abstract

The LTC3716 2-phase controller, which delivers high current with high efficiency in a compact size, is described.

Keywords

LTC3716

2-phase controller

Intel mobile CPUs

Introduction

Notebook computers demand more power than ever before, and in turn, CPU supply current requirements have grown significantly to the point where the latest Intel mobile CPUs call for up to 40A. Such high currents reveal many design problems that are relatively insignificant at lower current levels. Today’s notebook power supply designer must successfully manage the inevitable resulting power losses and thermal stresses within the already tight notebook ...

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