Buck-boost controller simplifies design of DC/DC converters for handheld products
David Burgoon
Abstract
A buck-boost controller that simplifies the design of DC/DC converters for handheld products is described.
Keywords
Buck-boost controller
DC/DC converter
LTC3785
Introduction
A number of conventional solutions have been available for the design of a DC/DC converter where the output voltage is within the input voltage range—a common scenario in Li-Ion battery-powered applications—but none were very attractive until now. Conventional topologies, such as SEPIC or boost followed by buck, have numerous disadvantages, including low efficiency, complex magnetics, polarity inversion and/or circuit complexity/cost. The LTC3785 ...
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