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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 188

5V high current step-down switchers

Ron Vinsant and Milton Wilcox

Abstract

This chapter describes how the LT1241 current mode PWM control IC can be used to make a simple high frequency step-down converter, and how the LT1158 half-bridge N-channel power MOSFET driver makes an ideal synchronous switch driver to improve the efficiency of step-down (buck) switching regulators.

Keywords

LT1241

LT1158

step-down converter

buck switching regulator

synchronous switch driver

Low cost high efficiency (80%), high power density DC/DC converter

The LT1241 current mode PWM control IC can be used to make a simple high frequency step-down converter. This converter also has low manufacturing costs due to simple magnetic components. This ...

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