A Single-Inductor Eight-Channel Output DC-DC Converter With Time-Limited Power Distribution Control and Single Shared Hysteresis Comparator
- Authors
- Kim, Jungmoon; Kim, Dong Seok; Kim, Chulwoo
- Issue Date
- 12월-2013
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- All-comparator control; comparator sharing technique; cross-regulation; hysteresis comparator; single-inductor multi-output (SIMO) DC-DC converter; time-limited power distribution control (TPDC)
- Citation
- IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, v.60, no.12, pp.3354 - 3367
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
- Volume
- 60
- Number
- 12
- Start Page
- 3354
- End Page
- 3367
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/101467
- DOI
- 10.1109/TCSI.2013.2265960
- ISSN
- 1549-8328
- Abstract
- This paper describes a time-limited power distribution control 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. This leads to the development of a new inductor peak-current control technique that does not require compensators and a phase-locked loop. This converter is analyzed and compared with existing SIMO converters with respect to the requirements of next-generation power management ICs. The maximum efficiency of the converter reaches 92%. The fabricated chip supporting eight-channel outputs is implemented in a 0.35-mu m CMOS process and occupies an area of 2.4 x 2.1 mm(2).
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