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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 50

A positive-to-negative voltage converter can be used for stable outputs even with a widely varying input

Victor Khasiev

Abstract

The use of a positive-to-negative voltage converter to achieve stable outputs even with a widely varying input is described.

Keywords

Synchronous step-down converter

LT3845

An obvious application of a positive-to-negative converter is generating a negative voltage output from a positive input. However, a not-so-obvious use is to produce a stable output voltage in an application that has a widely varying input. For example, a converter in a battery-powered device, which has an inherently variable input voltage, can produce a stable output voltage even if input voltage falls below the absolute value ...

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