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Modelling and Analysis of ΔΣ-Modulation-Based Output Spectrum Spur Reduction in Dual-Path Hybrid DC-DC Converters
Zhang, Xiongjie1; Jiang, Yang1; Law, Man Kay1; Mak, Pui In1; Martins, Rui P.1,2
2022-07
Conference Name2022 17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME)
Conference Date12-15 June 2022
Conference PlaceVillasimius
CountryItaly
Abstract

This paper presents a first mathematical model for estimating the output spectrum spurs of dual-path hybrid (DPH) DC-DC converters and proposes a ΔΣ−modulation control technique to reduce harmonic spikes. The proposed model is hand-calculation friendly and can ensure reasonable accuracy. It features the prediction of the output spectrum spurs that can compromise the noise characteristic of the converters. We also propose a spur reduction method using a 2–2 MASH ΔΣ−modulator to replace the conventional pulse-width modulation control, realizing a 4th order noise shaping function for better noise and limit-cycle spike suppression with relaxed stability issue. Simulation results show that the ΔΣ−modulation controlled DPH converter achieves a spectrum spike reduction of 17. 6dB and 15.2 dB in low- and high-frequency conditions, respectively, compared with PWM control.

KeywordDc-dc Power Convertors Delta-sigma Modulation
DOI10.1109/PRIME55000.2022.9816781
Language英語English
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Document TypeConference paper
CollectionFaculty of Science and Technology
THE STATE KEY LABORATORY OF ANALOG AND MIXED-SIGNAL VLSI (UNIVERSITY OF MACAU)
INSTITUTE OF MICROELECTRONICS
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorZhang, Xiongjie; Jiang, Yang
Affiliation1.ECE Department, FST, State Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, University of Macau, Macao
2.Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Zhang, Xiongjie,Jiang, Yang,Law, Man Kay,et al. Modelling and Analysis of ΔΣ-Modulation-Based Output Spectrum Spur Reduction in Dual-Path Hybrid DC-DC Converters[C],2022.
APA Zhang, Xiongjie,Jiang, Yang,Law, Man Kay,Mak, Pui In,&Martins, Rui P..(2022).Modelling and Analysis of ΔΣ-Modulation-Based Output Spectrum Spur Reduction in Dual-Path Hybrid DC-DC Converters..
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