Chapter 144

Single resistor sets positive or negative output for DC/DC converter

Jesus Rosales

Abstract

The LT3580 controller is described. Its unique feedback architecture allows it to be configured as an inverting or noninverting converter, to produce regulated voltages of either polarity.

Keywords

LT3580

output polarity

inverting converter

noninverting converter

Introduction

Many electronic subsystems, such as VFD (vacuum fluorescent display), TFT-LCD, GPS or DSL applications, require more than just a simple step-down or step-up DC/DC converter. They may require inverting, noninverting converters or both. Designers usually resort to different regulator ICs to control various polarity outputs, thus increasing the inventory list. ...

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