Zero(th)-Order Control of Boost DC-DC Converter With Transient Enhancement Scheme

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This paper proposes a new control scheme of zero(th)-order control (ZOC) for PWM DC-DC converters in which the pole frequencies of the control loop are no longer dependent on the values of the inductor, output capacitor, or the output load current. In the proposed scheme, the output voltage of the converter is regulated by a comparator. The main control loop of the converter regulates the inductor energy which is built up to an optimum value to be delivered to the output by means of the time interval between the rising edge of the main switch driving pulse and the comparator output pulse. A boost DC-DC converter with the proposed ZOC has been implemented and fabricated in a commercial 0.35 mu m BCDMOS process. A maximum efficiency of 88% is achieved at a total output power of 480 mW with the switching frequency of 833 kHz when the input voltage and the output voltage are 3.7 V and 8 V, respectively. Over 85% efficiency is maintained for a wide range of the output load current from 40 mA to 300 mA.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2013-03
Language
English
Article Type
Article
Citation

IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.48, no.3, pp.760 - 773

ISSN
0018-9200
DOI
10.1109/JSSC.2012.2233351
URI
http://hdl.handle.net/10203/173440
Appears in Collection
EE-Journal Papers(저널논문)
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