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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 314

4-phase boost converter delivers 384W with no heat sink

Victor Khasiev

Abstract

A 4-Phase boost converter that can deliver 384W with no heat sink is described.

Keywords

Boost converter

LTC3862 2-phase controller

Introduction

High power boost converters are becoming increasingly popular among designers in the automotive, industrial and telecom industries. When power levels of 300W or more are required, high efficiency (low power loss) is imperative in the power train components to avoid the need for bulky heat sinks and forced-air cooling. Interleaving power stages (multiphase operation) improves efficiency and reduces ripple voltage and currents in both the input and output capacitors, allowing the use of smaller filter ...

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