A Spur-Reduction DC-DC Converter With Active Ripple Cancelation Technique

This paper presents an active ripple cancelation (ARC) technique for reducing the switching harmonics of the output voltage of a dc-dc converter. An ARC module injects an ac current to accurately cancel the inductor current ripple while the switching converter provides the dc output current. As a re...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of emerging and selected topics in power electronics 2018-12, Vol.6 (4), p.2206-2214
Main Authors: Liu, Pang-Jung, Liao, Chen-Yu, Kuo, Mao-Hui
Format: Article
Language:English
Subjects:
Adaptive control
Alternating current
Buck converters
Capacitors
Control stability
DC–DC converter
Electric converters
electromagnetic interference (EMI)
frequency hopping
Frequency modulation
Inductors
Noise levels
Power converters
Power transistors
Reduction
ripple cancelation
spur reduction
Switches
Switching
Switching converters
Systems stability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents an active ripple cancelation (ARC) technique for reducing the switching harmonics of the output voltage of a dc-dc converter. An ARC module injects an ac current to accurately cancel the inductor current ripple while the switching converter provides the dc output current. As a result, the output spur of the switching converter can be reduced effectively. However, due to the ARC module, the proposed power converter includes two complex poles. To ensure the system stability and achieve accurate ripple cancelation, a proposed control method and an adaptive phase-lock circuit are utilized. Furthermore, the ripple cancelation capability is independent of duty cycle, load current, and other converter parameters. The measurement results demonstrate that the switching spur reduction with ARC technique can achieve 28 dB while the noise floor is kept the same.
ISSN:2168-6777
2168-6785
DOI:10.1109/JESTPE.2018.2847734