The nn(+)-Junction as the Key to Improved Ruggedness and Soft Recovery of Power Diodes
2009 (English)In: IEEE Transactions on Electron Devices, ISSN 0018-9383, Vol. 56, no 11, 2825-2832 p.Article in journal (Refereed) Published
The effects during reverse recovery of pin power diodes are determined by free carriers and their interaction with the electric field. A density of free carriers higher than the background doping will easily occur in space-charge regions during reverse recovery of high-voltage silicon devices. As a result, a high electric-field strength combined with avalanche generation occurs at the p-n junction. However, if a second region with high electric-field strength arises at the nn(+)-junction, the situation can become critical. If the second electric-field peak can be suppressed, it is possible to make diodes that are very rugged and show a significantly improved soft-recovery behavior.
Place, publisher, year, edition, pages
2009. Vol. 56, no 11, 2825-2832 p.
Avalanche, dynamic avalanche, power diodes, reverse recovery, high-voltage diodes, dynamic avalanche, buffer structures, reverse-recovery, breakdown, injection
IdentifiersURN: urn:nbn:se:kth:diva-18883DOI: 10.1109/ted.2009.2031019ISI: 000271019500058ScopusID: 2-s2.0-70350712125OAI: oai:DiVA.org:kth-18883DiVA: diva2:336930
QC 201005252010-08-052010-08-052011-02-01Bibliographically approved