Wide-supply-voltage-range buck-boost single-inductor dual-output DC-DC converter with pulse-frequency-modulation control

Liang Hong Lin, Hung Hsien Wu, Chia Ling Wei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An integrated pulse-frequency-modulation controlled buck-boost single-inductor dual-output dc-dc converter with wide supply voltage range is proposed. In addition, the all-comparator feedback control technique is used, which means that error amplifiers are replaced by comparators to monitor the output voltage. By using this technique, the converter can achieve fast transient response, and has no stability problem. Moreover, no external compensation components are needed. In fact, the proposed PFM-controlled converter is suitable for low-power applications, such as powering biomedical sensing chips. The proposed converter chip was fabricated by a 0.35-μm CMOS process, and its input voltage range may ranges from 1.8 V to 4.2 V. There are two outputs in the proposed converter, 1.8 V and 3.3 V, and their maximal output currents are 120 mA and 90 mA. The load-regulations of these two outputs are 0.0066 %/mA and 0.008 %/mA, and the cross-regulations are 0.001 %/mA and 0.0004 %/mA.

Original languageEnglish
Title of host publication2015 IEEE 11th International Conference on Power Electronics and Drive Systems, PEDS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages104-107
Number of pages4
ISBN (Electronic)9781479944033
DOIs
Publication statusPublished - 2015 Aug 14
Event11th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2015 - Sydney, Australia
Duration: 2015 Jun 92015 Jun 12

Publication series

NameProceedings of the International Conference on Power Electronics and Drive Systems
Volume2015-August

Other

Other11th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2015
CountryAustralia
CitySydney
Period15-06-0915-06-12

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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