Original scientific paper

Capacitor-less Buck Converter

Aljaž Kapun ; EXOR ETI d.o.o., Stegne 7, 1000 Ljubljana, Slovenia
Mitja Truntič orcid.org/0000-0002-1440-161X ; University of Maribor, Faculty of electrical engineering and computer sciences, Smetanova 17, 2000, Maribor, Slovenia
Alenka Hren ; University of Maribor, Faculty of electrical engineering and computer sciences, Smetanova 17, 2000, Maribor, Slovenia
Miro Milanovič ; University of Maribor, Faculty of electrical engineering and computer sciences, Smetanova 17, 2000, Maribor, Slovenia

Abstract

Low-power switched-mode power supply converters are used in applications where size and efficiency are critical. The buck converter size can be reduced by elimination of the bulky filter capacitor. The filtering function of this capacitor can be replaced by an output current ripple compensation circuit. The compensating circuit is applied, based on inductor current measurement and linear amplifier. The proposed compensating algorithm is investigated theoretically by simulation, and verified experimentally.

Keywords

dc-dc buck converter; low power; inductor current ripple compensation

Hrčak ID:

78296

URI

https://hrcak.srce.hr/78296

Publication date:

6.3.2012.

Article data in other languages: croatian

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