Chapter 122

2-phase boost converter delivers 10W from a 3mm × 3mm DFN package

Jesus Rosales

Abstract

A 2-phase boost converter that delivers 10W from a 3mm × 3mm DFN package is described.

Keywords

Boost converter

LT3428

Introduction

Small size, high efficiency, low noise and simplicity are all key features for battery-powered applications and point-of-load converters in low voltage systems. The LTC3428 is well suited for these applications because it offers these features as well as minimum output ripple and component count. It can start up with as little as 1.5V and operates with inputs up to 4.5V. Its dual phase architecture allows for an effective switching frequency of 2MHz (1MHz/phase), which minimizes inductor and capacitor ...

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