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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 459

Dual current sense amplifiers simplify H-bridge load monitoring

Jon Munson

Abstract

The LTC6103 and LTC6104 dual current sense amplifiers, which simplify H-bridge load monitoring, are described.

Keywords

Current sense amplifier

H-bridge

LTC6103

LTC6104

Introduction

The H-bridge power-transistor topology is increasingly popular as a means of driving motors and other loads bidirectionally from a single supply potential. In most cases there is great benefit in monitoring the current delivered to the load and utilizing this information in real time to provide operational feedback to a control system. In most new designs, pulse-width modulation (PWM) techniques are used to provide highly efficient variable power delivery, but ...

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