Title :
A high efficiency, noninverting, buck-boost DC-DC converter
Author :
Gaboriault, Mark ; Notman, Andrew
Author_Institution :
Allegro Microsystems, Worcester, MA, USA
Abstract :
Portable electronics applications often require a system voltage that is within the range of fully-charged to semidischarged batteries, for example 3.3 V output from a 2.8 V to 4.2 V lithium-ion battery input. The optimal solution to this requirement is a high-efficiency, noninverting buck-boost, DC-DC converter, providing a programmable constant output voltage, typically from single cell Li-ion, multicell NiMH, or alkaline power sources. This solution uses a control scheme which provides automatic and smooth transition through boost, buck-boost and buck modes.
Keywords :
DC-DC power convertors; controllers; lithium; nickel compounds; secondary cells; 2.8 to 4.2 V; 3.3 V; Cuk converters; Li; SEPIC; alkaline power sources; buck-boost DC-DC converter; electronic applications; lithium ion battery; regulator; semidischarged battery; Batteries; Buck converters; Capacitors; DC-DC power converters; Inductors; Integrated circuit noise; Pulse width modulation; Regulators; Switching converters; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE
Print_ISBN :
0-7803-8269-2
DOI :
10.1109/APEC.2004.1296049
