A single-inductor dual-output buck converter with self-adapted PCCM method

Author

Yang, Yang ; Liang, Sun ; Xiaobo, Wu

Author_Institution

Inst. of VLSI, Zhejiang Univ., Hangzhou, China

fYear

2009

fDate

25-27 Dec. 2009

Firstpage

87

Lastpage

90

Abstract

A single-inductor dual-output (SIDO) buck converter controller is presented, which operates in self-adapted pseudo-continuous-conduction-mode (PCCM) with adjustable dc current levels. Freewheel switching control has been introduced to realize large load current with smaller current ripple, while cross regulation can be minimized. Furthermore, the dc current level of subconverters can be adjusted according to each load. The controller was designed and fabricated in 1.5 Â¿m BCD technology. The two outputs are set at 2.5 V and 3.3 V. And the conversion efficiency of 88% at 300 mW is achieved.

Keywords

convertors; efficiency 88 percent; freewheel switching control; power 300 mW; self-adapted pseudocontinuous-conduction-mode; single-inductor dual-output buck converter; size 1.5 mum; voltage 2.5 V; voltage 3.3 V; Buck converters; Electric variables control; Inductors; Magnetic variables control; Personal digital assistants; Power supplies; Sun; Switches; Timing; Voltage; Buck; PCCM; SIDO;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices and Solid-State Circuits, 2009. EDSSC 2009. IEEE International Conference of

Conference_Location

Xi´an

Print_ISBN

978-1-4244-4297-3

Electronic_ISBN

978-1-4244-4298-0

Type

conf

DOI

10.1109/EDSSC.2009.5394182

Filename

5394182