Chapter 80

Unique high efficiency 12V converter operates with inputs from 6V to 28V

Christopher B. Umminger

Abstract

A unique high efficiency 12V converter that operates with inputs from 6V to 28V is described.

Keywords

Buck/boost converter

LTC1625

Generating an output DC voltage from an input voltage that can vary both above and below the regulation point is a challenging power supply problem with a variety of solutions. Flyback or forward converters work well, but are difficult to use if a small and efficient solution is desired at high output currents. A cascade of two converters, such as a boost followed by a buck or linear regulator, is another possibility. Alternately, one can use a switching regulator in a SEPIC configuration ...

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