On the design of single-inductor double-output DC-DC buck, boost and buck-boost converters

Author

Belloni, Massimiliano ; Bonizzoni, Edoardo ; Maloberti, Franco

Author_Institution

Dept. of Electron., Univ. of Pavia, Pavia

fYear

2008

fDate

Aug. 31 2008-Sept. 3 2008

Firstpage

626

Lastpage

629

Abstract

Design methodologies for Single-Inductor Dual-Output (SIDO) DC-DC switching converters are presented. The suitable control of a double feedback loop enables the single inductor sharing between two outputs with low output voltages errors and limited load-regulation. The design methods to achieve SIDO converters with a wide input supply voltage range and with an overall driving capability as large as 1.4 A have been verified with simulations at the transistor level. The switching frequency can be 3 MHz or more with a small off-chip inductor.

Keywords

DC-DC power convertors; inductors; switching convertors; DC-DC switching converters; buck-boost converters; double feedback loop; low output voltages errors; single-inductor double-output DC-DC buck converters; small off-chip inductor; switching frequency; Buck converters; Costs; DC-DC power converters; Design methodology; Inductors; Regulators; Switches; Switching converters; Topology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2008. ICECS 2008. 15th IEEE International Conference on

Conference_Location

St. Julien´s

Print_ISBN

978-1-4244-2181-7

Electronic_ISBN

978-1-4244-2182-4

Type

conf

DOI

10.1109/ICECS.2008.4674931

Filename

4674931