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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 112

New synchronous step-down switching regulators achieve 95% efficiency

Brian Huffman and Milt Wilcox

Abstract

The LTC1148 and LTC1149 synchronous switching regulator controllers, which make high efficiency DC/DC conversion possible in a wide range of applications, are described.

Keywords

DC/DC converter

Synchronous switching regulator

LTC1148

LTC1149

The new LTC1148 and LTC1149 synchronous switching regu-lator controllers make high efficiency DC/DC conversion possible in a wide range of applications. These controllers share a current-mode architecture which combines synchronous switching for maximum efficiency at high currents with an automatic low current operating mode, called Burst Mode operation, which makes 90% efficiencies ...

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