Tuesday, February 7, 2012

App note: Buck-boost converter

App note: Buck-boost converter:


dangerousprototypes.com writes:


Here is an article from Texas Instruments featured on EETimes describing how to design a buck-boost converter. These converters are used when the input voltage can be both above and below the output voltage. One example are 3.3V systems powered by lithium-ion batteries which swing from ~3V to ~4V.


This design is in effect a combination of both buck and boost reference designs. When the right switch is left open and control is applied to the left switch a buck converter is made. Vice-versa, when the left switch is left closed and control is applied to the right switch a boost converter is built.


App note: Buck-boost converter - [Link]


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