Adaptive Characterization Platform With Near Magnetic Field for Wideband Oscillations of Multichip Power Modules

In this article, an experimental platform is proposed to characterize the wideband oscillations of multichip power modules with near magnetic field. The characterization platform is established on the fact that a magnetic field is generated in space during the broadband oscillations inside the power...

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Bibliographic Details
Published in:IEEE journal of emerging and selected topics in power electronics 2024-12, Vol.12 (6), p.5672-5684
Main Authors: Zhu, Ankang, Jin, Yuting, Hai, Dong, Ye, Shuoyu, Luo, Haoze, Li, Wuhua, He, Xiangning
Format: Article
Language:English
Subjects:
Broadband
Broadband communication
Characterization platform
Commutation
Insulated gate bipolar transistors
Magnetic field measurement
Magnetic fields
Modules
Multichip modules
multichip power modules
near magnetic field
Oscillations
Oscillators
Power converters
Short circuits
Switches
wideband oscillations
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Summary:In this article, an experimental platform is proposed to characterize the wideband oscillations of multichip power modules with near magnetic field. The characterization platform is established on the fact that a magnetic field is generated in space during the broadband oscillations inside the power module and the magnetic field contains the information of broadband oscillations. First, considering that the near magnetic field is only generated during the commutation process, the decomposition method of operation conditions for the power converter based on a double-pulse test is proposed on the basis of keeping the drive and power loops consistent. Second, the construction method of spatial near magnetic field scanning platform is described in detail based on the collaboration of multiple software. Furthermore, the functions of the proposed platform are verified by experimental results: characterizing different types of oscillations corresponding to different frequencies, locating the excitation sources of high-frequency oscillations, evaluating the short-circuit fault protection strategy, obtaining the time-frequency-space cloud map of the near magnetic field, and reconstructing the near magnetic field of a power converter with continuous operation conditions based on off-line discrete test points. As a result, the proposed platform can be applied to guide the optimized design of multichip power modules for broadband oscillations.
ISSN:2168-6777
2168-6785
DOI:10.1109/JESTPE.2024.3419428