A single-inductor 8-channel output DC-DC boost converter with time-limited power distribution control and single shared hysteresis comparator

Author

Jungmoon Kim ; Chulwoo Kim

Author_Institution

Kim Korea Univ., Seoul, South Korea

fYear

2014

fDate

20-23 Jan. 2014

Firstpage

33

Lastpage

34

Abstract

This paper describes a time-limited power distribution control (TPDC) technique that can be used for single-inductor multiple-output (SIMO) DC-DC converter with many unbalanced loads. Furthermore, the true all-comparator control technique that raises no stability or complexity issues is proposed. This all-comparator technique for SIMO converters is realized only with a single shared hysteresis comparator at a constant switching frequency of 800 kHz. The maximum efficiency reaches 92%. The fabricated chip with 8-channel outputs occupies 2.4×2.1 mm² in a 0.35-um CMOS process.

Keywords

CMOS integrated circuits; DC-DC power convertors; comparators (circuits); hysteresis; switching convertors; CMOS process; SIMO converters; TPDC; frequency 800 kHz; single shared hysteresis comparator; single-inductor 8-channel output DC-DC boost converter; size 0.35 mum; time-limited power distribution control; Hysteresis; Inductors; Reliability; Switches; Switching frequency; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Design Automation Conference (ASP-DAC), 2014 19th Asia and South Pacific

Conference_Location

Singapore

Type

conf

DOI

10.1109/ASPDAC.2014.6742860

Filename

6742860