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A low load- and cross-regulation SIDO converter using an adaptive current sensor and LDO regulator with a selectable charge pump for mobile devices

Title
A low load- and cross-regulation SIDO converter using an adaptive current sensor and LDO regulator with a selectable charge pump for mobile devices
Author
권오경
Keywords
Buck-boost converter; Cross-regulation; Current sensor; DC-DC converter; Load transient; Single-inductor multiple-output (SIMO)
Issue Date
2017-05
Publisher
SPRINGER
Citation
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, v. 92, no. 2, page. 293-301
Abstract
In this paper, a single-inductor dual-output (SIDO) converter is proposed to generate stable output voltages with low load- and cross-regulations for mobile applications. The proposed converter, which operates in the buck-boost or boost mode, employs an adaptive current sensor and a low-dropout regulator with a selectable charge pump to achieve low load- and cross-regulations. In addition, an error amplifier and comparators are implemented to provide stable dual output voltages of 1.8 and 3.3 V at an input voltage range of between 1.0 and 3.2 V. The proposed SIDO converter was fabricated using a 0.18-mu m CMOS process technology and occupies a chip area of 1568 mu m x 728 mu m. The measurement results show that the maximum power efficiency, load-regulation, and cross-regulation are 89.2%, 0.120 and 0.088 mV/mA, respectively, when the load current changes from 10 to 50 mA.
URI
https://link.springer.com/article/10.1007%2Fs10470-017-0990-7http://repository.hanyang.ac.kr/handle/20.500.11754/113954
ISSN
0925-1030; 1573-1979
DOI
10.1007/s10470-017-0990-7
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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