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Quantization and Sampling Effects in Fast Digitally Controlled Switch-Mode DC/DC Buck Converters

  • Software-defined control of DC/DC switch mode power converters features unequaled flexibility compared to analog control. For fast switching converters as recently used for low power applications, digital control may cause steady-state oscillations known as limit cycles. This effect based on a quantized duty cycle is compared to other aberrations such as output ripple voltage, which is inherent to any pulse-width modulator. A distinction is made between DC and AC errors. The latter are divided into synchronous and asynchronous output voltage disturbances. Synchronous AC errors are composed of the switching frequency and its harmonics.

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Metadaten
Author:Martin J. W. Schubert, Wai-Kong Lee, Boon Yaik OoiORCiD
DOI:https://doi.org/10.1109/IEACon51066.2021.9654272
ISBN:978-1-7281-9253-6
Parent Title (English):2021 IEEE Industrial Electronics and Applications Conference (IEACon): 22.11.2021 - 23.11.2021, Penang, Malaysia
Publisher:IEEE
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2021
Release Date:2022/02/07
Tag:aberrations due to digitization; digital pulse-width modulation (DPWM); low power DC/DC buck conversion; output voltage sampling
First Page:56
Last Page:61
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Elektronik
Begutachtungsstatus:peer-reviewed
research focus:Energie und Mobilität
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG