Avalanche capability degradation of the parallel-connected SiC MOSFETs

Mao, Hua; Ran, Li; Chen, Haoyu; Zhou, Xianda; Jiang, Huaping

doi:10.1016/j.microrel.2023.114926

Cited by 1 publication

(2 citation statements)

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“…The equivalent circuit of the two coils is shown in Figure 3, where the controlled voltage source represents the coupling effect between the two coils, and the inductance is the respective leakage inductance of the coupled coils. The voltage of the coupled coils in the converter secondary side can be expressed by Equation (15).…”

Section: The Operational Principle Of the Coupled Inductancementioning

confidence: 99%

“…Many studies have been performed on the imbalance of current suppression. From the view of the study object, the imbalance current suppression method can be classified into three categories: device classification; device operating condition monitoring; and circuit topology [14][15][16][17][18][19]. The chip screening method is proposed to solve the mismatch introduced by the asymmetric layout [20].…”

Section: Introductionmentioning

confidence: 99%

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A Magnetic Integration Mismatch Suppression Strategy for Parallel SiC Power Devices Applications

Sun,

Liu,

Chen

et al. 2024

Electronics

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A new magnetic integrated parallel current sharing control method for parallel silicon carbide (SiC) power devices is presented in this article. The problem of the application of parallel connected SiC power devices is analyzed. The coupled inductance method is adopted to solve the problem. Based on the active-back converter, we establish the theoretical model of the coupled inductance, and figure out its working mechanism. The integrated magnetic device is designed based on the working mechanism, and the effectiveness is determined through simulation. A 12 V/10 A output magnetic integrated active-flyback converter prototype is fabricated and tested to verify the strategy. Measurement results show that, with the proposed magnetic integrated method, the mismatch voltage is suppressed to 0.1 V under all load conditions, and the efficiency increases by at most 6.52% under full load conditions.

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Section: The Operational Principle Of the Coupled Inductancementioning

confidence: 99%