Lifetime Control Free Cathode Side Concept for Si-Based Power Diode Targeting High-Speed Operation and High Dynamic Ruggedness

Nakamura, K.; Tanaka, Koji; Takeda, Norio; Suzuki, Masatoshi; Kawase, Yusuke

doi:10.1109/ispsd49238.2022.9813620

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2023

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“…Further research shows that Semi-SJ-MPS has softer reverse recovery characteristics than SJ-MPS [7], but chip thickness is increased. By introducing the relaxed field of cathode(RFC) into it, FWD can be thinned and reverse recovery characteristics can be improved simultaneously [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A Novel 1200v Sj-Rfc-Mps with Fast Recovery and Snap-Off-Free

Rao,

Li,

et al. 2023

Preprint

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Section: Introductionmentioning

confidence: 99%

A Novel 1200v Sj-Rfc-Mps with Fast Recovery and Snap-Off-Free

Rao,

Li,

et al. 2023

Preprint

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A Novel 1200V SJ-RFC-MPS with Fast Recovery and Snap-off-free

Rao,

Li,

et al. 2023

Preprint

View full text Add to dashboard Cite

In this work, a novel Super-junction Relaxed Field of Cathode Merged PiN Schot-tky (SJ-RFC-MPS) realizing low reverse recovery time, snap-off-free and superior VF-Qrr trade-off is proposed. With the introduction of RFC on cathode of SJ-MPS, the N-sub injection window during on-state is reduced, and holes injected into N-buffer during the reverse recovery process suppress the cathode electric field, thus snap-off in conventional SJ-MPS is eliminated. In addition, under the effect of reduced drift region thickness from snap-off-free Semi-SJ-MPS, trr and Qrr are reduced by 40.7% and 40.6% though TCAD simulation, respectively. It proves that the RFC just provides a solution of suppressing snap-off in SJ-MPS, and which is necessary for SJ-MPS to exert its intrinsic advantage of fast recovery.

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Lifetime Control Free Cathode Side Concept for Si-Based Power Diode Targeting High-Speed Operation and High Dynamic Ruggedness

Cited by 2 publications

References 7 publications

A Novel 1200v Sj-Rfc-Mps with Fast Recovery and Snap-Off-Free

A Novel 1200v Sj-Rfc-Mps with Fast Recovery and Snap-Off-Free

A Novel 1200V SJ-RFC-MPS with Fast Recovery and Snap-off-free

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