An Error-Based Controlled Single-Inductor 10-Output DC-DC Buck Converter With High Efficiency Under Light Load Using Adaptive Pulse Modulation

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An error-based control method is proposed for a single-inductor multiple-output (SIMO) converter that maintains high efficiency under various load conditions. A peak efficiency of 88.7% was achieved with one output (I-O1) of 5 mA, while the other outputs are at 432 mA. A hybrid topology composed of a switching converter and a linear regulator is also presented for fast load transient response. The proposed SIMO buck converter was fabricated with a 1P4M 0.35 mu m BCD process and has 10 independently regulated outputs. The measured load transient waveform shows cross regulation of 0.1 mV/mA and a load transient of 0.17 mV/mA. This was achieved under load transient conditions for one output (I-O9) in between 1 mA and 100 mA with the other outputs at 422 mA.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2015-12
Language
ENG
Article Type
Article
Keywords

MINIMIZED CROSS-REGULATION

Citation

IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.50, no.12, pp.2825 - 2838

ISSN
0018-9200
DOI
10.1109/JSSC.2015.2471839
URI
http://hdl.handle.net/10203/205715
Appears in Collection
EE-Journal Papers(저널논문)
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