A double-hybrid spread-spectrum technique for EMI mitigation in DC-DC switching regulators
Gamal M. Dousoky, Masahito Shoyama, Tamotsu Ninomiya
Applied Energy Engineering
Randomizing the switching frequency (RSF) to reduce the electromagnetic interference (EMI) of switching power converters is a well-known technique that has been previously discussed. The randomized pulse position (RPP) technique, in which the switching frequency is kept fixed while the pulse position (the delay from the starting of the switching cycle to the turn-on instant within the cycle) is randomized, has been previously addressed in the literature for the same purpose. This paper presents a double-hybrid technique (DHB) for EMI reduction in dc-dc switching regulators. The proposed technique employed both the RSF and the RPP techniques. To effectively spread the conducted-noise frequency spectrum and at the same time attain a satisfactory output voltage quality, two parameters (switching frequency and pulse position) were randomized, and a third parameter (the duty ratio) was controlled by a digital compensator. Implementation was achieved using field programmable gate array (FPGA) technology, which is increasingly being adopted in industrial electronic applications. To evaluate the contribution of the proposed DHB technique, investigations were carried out for each basic PWM, RPP, RSF, and DHB technique. Then a comparison was made of the performances achieved. The experimentally investigated features include the effect of each technique on the common-mode, differential-mode, and total conducted-noise characteristics, and their influence on the converter's output ripple voltage.
Journal of Power Electronics
https://doi.org/10.6113/JPE.2010.10.4.342
10.6113/JPE.2010.10.4.342
Fingerprint Dive into the research topics of 'A double-hybrid spread-spectrum technique for EMI mitigation in DC-DC switching regulators'. Together they form a unique fingerprint.
Signal interference Engineering & Materials Science
Switching frequency Engineering & Materials Science
Industrial electronics Engineering & Materials Science
Electric potential Engineering & Materials Science
Power converters Engineering & Materials Science
Pulse width modulation Engineering & Materials Science
Field programmable gate arrays (FPGA) Engineering & Materials Science
Dousoky, G. M., Shoyama, M., & Ninomiya, T. (2010). A double-hybrid spread-spectrum technique for EMI mitigation in DC-DC switching regulators. Journal of Power Electronics, 10(4), 342-350. https://doi.org/10.6113/JPE.2010.10.4.342
A double-hybrid spread-spectrum technique for EMI mitigation in DC-DC switching regulators. / Dousoky, Gamal M.; Shoyama, Masahito; Ninomiya, Tamotsu.
In: Journal of Power Electronics, Vol. 10, No. 4, 07.2010, p. 342-350.
Dousoky, GM, Shoyama, M & Ninomiya, T 2010, 'A double-hybrid spread-spectrum technique for EMI mitigation in DC-DC switching regulators', Journal of Power Electronics, vol. 10, no. 4, pp. 342-350. https://doi.org/10.6113/JPE.2010.10.4.342
Dousoky GM, Shoyama M, Ninomiya T. A double-hybrid spread-spectrum technique for EMI mitigation in DC-DC switching regulators. Journal of Power Electronics. 2010 Jul;10(4):342-350. https://doi.org/10.6113/JPE.2010.10.4.342
Dousoky, Gamal M. ; Shoyama, Masahito ; Ninomiya, Tamotsu. / A double-hybrid spread-spectrum technique for EMI mitigation in DC-DC switching regulators. In: Journal of Power Electronics. 2010 ; Vol. 10, No. 4. pp. 342-350.
@article{e0495cdf1c11478c9ba240b8e273294d,
title = "A double-hybrid spread-spectrum technique for EMI mitigation in DC-DC switching regulators",
abstract = "Randomizing the switching frequency (RSF) to reduce the electromagnetic interference (EMI) of switching power converters is a well-known technique that has been previously discussed. The randomized pulse position (RPP) technique, in which the switching frequency is kept fixed while the pulse position (the delay from the starting of the switching cycle to the turn-on instant within the cycle) is randomized, has been previously addressed in the literature for the same purpose. This paper presents a double-hybrid technique (DHB) for EMI reduction in dc-dc switching regulators. The proposed technique employed both the RSF and the RPP techniques. To effectively spread the conducted-noise frequency spectrum and at the same time attain a satisfactory output voltage quality, two parameters (switching frequency and pulse position) were randomized, and a third parameter (the duty ratio) was controlled by a digital compensator. Implementation was achieved using field programmable gate array (FPGA) technology, which is increasingly being adopted in industrial electronic applications. To evaluate the contribution of the proposed DHB technique, investigations were carried out for each basic PWM, RPP, RSF, and DHB technique. Then a comparison was made of the performances achieved. The experimentally investigated features include the effect of each technique on the common-mode, differential-mode, and total conducted-noise characteristics, and their influence on the converter's output ripple voltage.",
author = "Dousoky, {Gamal M.} and Masahito Shoyama and Tamotsu Ninomiya",
doi = "10.6113/JPE.2010.10.4.342",
journal = "Journal of Power Electronics",
publisher = "Korean Institute of Power Electronics",
T1 - A double-hybrid spread-spectrum technique for EMI mitigation in DC-DC switching regulators
AU - Dousoky, Gamal M.
AU - Shoyama, Masahito
AU - Ninomiya, Tamotsu
N2 - Randomizing the switching frequency (RSF) to reduce the electromagnetic interference (EMI) of switching power converters is a well-known technique that has been previously discussed. The randomized pulse position (RPP) technique, in which the switching frequency is kept fixed while the pulse position (the delay from the starting of the switching cycle to the turn-on instant within the cycle) is randomized, has been previously addressed in the literature for the same purpose. This paper presents a double-hybrid technique (DHB) for EMI reduction in dc-dc switching regulators. The proposed technique employed both the RSF and the RPP techniques. To effectively spread the conducted-noise frequency spectrum and at the same time attain a satisfactory output voltage quality, two parameters (switching frequency and pulse position) were randomized, and a third parameter (the duty ratio) was controlled by a digital compensator. Implementation was achieved using field programmable gate array (FPGA) technology, which is increasingly being adopted in industrial electronic applications. To evaluate the contribution of the proposed DHB technique, investigations were carried out for each basic PWM, RPP, RSF, and DHB technique. Then a comparison was made of the performances achieved. The experimentally investigated features include the effect of each technique on the common-mode, differential-mode, and total conducted-noise characteristics, and their influence on the converter's output ripple voltage.
AB - Randomizing the switching frequency (RSF) to reduce the electromagnetic interference (EMI) of switching power converters is a well-known technique that has been previously discussed. The randomized pulse position (RPP) technique, in which the switching frequency is kept fixed while the pulse position (the delay from the starting of the switching cycle to the turn-on instant within the cycle) is randomized, has been previously addressed in the literature for the same purpose. This paper presents a double-hybrid technique (DHB) for EMI reduction in dc-dc switching regulators. The proposed technique employed both the RSF and the RPP techniques. To effectively spread the conducted-noise frequency spectrum and at the same time attain a satisfactory output voltage quality, two parameters (switching frequency and pulse position) were randomized, and a third parameter (the duty ratio) was controlled by a digital compensator. Implementation was achieved using field programmable gate array (FPGA) technology, which is increasingly being adopted in industrial electronic applications. To evaluate the contribution of the proposed DHB technique, investigations were carried out for each basic PWM, RPP, RSF, and DHB technique. Then a comparison was made of the performances achieved. The experimentally investigated features include the effect of each technique on the common-mode, differential-mode, and total conducted-noise characteristics, and their influence on the converter's output ripple voltage.
U2 - 10.6113/JPE.2010.10.4.342
DO - 10.6113/JPE.2010.10.4.342
JO - Journal of Power Electronics
JF - Journal of Power Electronics