Impact of the spread-spectrum technique on the higher-order harmonics and radiated emissions of a synchronous buck converter

Raul Blecic; Josip Bacmaga; Adrijan Baric; Fabio Pareschi; Riccardo Rovatti; Gianluca Setti

doi:10.1109/NGCAS.2018.8572290

Impact of the spread-spectrum technique on the higher-order harmonics and radiated emissions of a synchronous buck converter

Raul Blecic, Josip Bacmaga, Adrijan Baric, Fabio Pareschi, Riccardo Rovatti, Gianluca Setti

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Switched-mode power converters generate electromagnetic emissions which may violate the limits specified in the regulations. Spread-spectrum is an effective technique for reducing the electromagnetic interference of switching devices. The reduction of the magnitude of the first harmonic by the spread-spectrum technique is mainly in focus in the literature. In this paper, the impact on the higher-order harmonics and on the radiated emissions is analyzed. A non-regulated synchronous buck converter is used as a device under test. The radiated emissions of the converter are calculated from the measurements performed by a transverse electromagnetic cell and a hybrid coupler. The measurements are performed for different values of the parameters of the spread-spectrum technique and a reduction of up to 5.7 dB is obtained.

Original language	English (US)
Title of host publication	2018 New Generation of CAS, NGCAS 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	13-16
Number of pages	4
ISBN (Print)	9781538676813
DOIs	https://doi.org/10.1109/NGCAS.2018.8572290
State	Published - Dec 10 2018
Externally published	Yes

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10.1109/NGCAS.2018.8572290

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title = "Impact of the spread-spectrum technique on the higher-order harmonics and radiated emissions of a synchronous buck converter",

abstract = "Switched-mode power converters generate electromagnetic emissions which may violate the limits specified in the regulations. Spread-spectrum is an effective technique for reducing the electromagnetic interference of switching devices. The reduction of the magnitude of the first harmonic by the spread-spectrum technique is mainly in focus in the literature. In this paper, the impact on the higher-order harmonics and on the radiated emissions is analyzed. A non-regulated synchronous buck converter is used as a device under test. The radiated emissions of the converter are calculated from the measurements performed by a transverse electromagnetic cell and a hybrid coupler. The measurements are performed for different values of the parameters of the spread-spectrum technique and a reduction of up to 5.7 dB is obtained.",

author = "Raul Blecic and Josip Bacmaga and Adrijan Baric and Fabio Pareschi and Riccardo Rovatti and Gianluca Setti",

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Impact of the spread-spectrum technique on the higher-order harmonics and radiated emissions of a synchronous buck converter. / Blecic, Raul; Bacmaga, Josip; Baric, Adrijan et al.
2018 New Generation of CAS, NGCAS 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 13-16.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Impact of the spread-spectrum technique on the higher-order harmonics and radiated emissions of a synchronous buck converter

AU - Blecic, Raul

AU - Bacmaga, Josip

AU - Baric, Adrijan

AU - Pareschi, Fabio

AU - Rovatti, Riccardo

AU - Setti, Gianluca

N1 - Generated from Scopus record by KAUST IRTS on 2023-02-15

PY - 2018/12/10

Y1 - 2018/12/10

N2 - Switched-mode power converters generate electromagnetic emissions which may violate the limits specified in the regulations. Spread-spectrum is an effective technique for reducing the electromagnetic interference of switching devices. The reduction of the magnitude of the first harmonic by the spread-spectrum technique is mainly in focus in the literature. In this paper, the impact on the higher-order harmonics and on the radiated emissions is analyzed. A non-regulated synchronous buck converter is used as a device under test. The radiated emissions of the converter are calculated from the measurements performed by a transverse electromagnetic cell and a hybrid coupler. The measurements are performed for different values of the parameters of the spread-spectrum technique and a reduction of up to 5.7 dB is obtained.

AB - Switched-mode power converters generate electromagnetic emissions which may violate the limits specified in the regulations. Spread-spectrum is an effective technique for reducing the electromagnetic interference of switching devices. The reduction of the magnitude of the first harmonic by the spread-spectrum technique is mainly in focus in the literature. In this paper, the impact on the higher-order harmonics and on the radiated emissions is analyzed. A non-regulated synchronous buck converter is used as a device under test. The radiated emissions of the converter are calculated from the measurements performed by a transverse electromagnetic cell and a hybrid coupler. The measurements are performed for different values of the parameters of the spread-spectrum technique and a reduction of up to 5.7 dB is obtained.

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DO - 10.1109/NGCAS.2018.8572290

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EP - 16

BT - 2018 New Generation of CAS, NGCAS 2018

PB - Institute of Electrical and Electronics Engineers Inc.

ER -

Impact of the spread-spectrum technique on the higher-order harmonics and radiated emissions of a synchronous buck converter

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