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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 147

High performance 3-phase power supply delivers 65A and high efficiency over the entire load range

Wei Chen

Abstract

The new 3-phase controllers LTC3730, LTC3731 and LTC3732 are described. They operate efficiently at both heavy and light loads, over the entire CPU load range.

Keywords

LTC3730

LTC3731

LTC3732

3-phase power supply

PolyPhase switching

Introduction

CPUs used in notebook computers and other mobile applications now draw more than 30A of current and may draw as much as 65A in the near future. For these heavy loads, high efficiency power supplies are required to protect the system from excessive thermal stress. With this in mind, PolyPhase switching DC/DC converters have become the standard for CPU power supplies ...

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