| 摘要 |
The present invention relates to a power semiconductor device (10), comprising a power semiconductor element (12) with an upper side (14) and with a lower side (16), the upper side (14) being located opposite to the lower side (16); a first electrode (18) and a second electrode (20), and a housing, wherein the power semiconductor element (12) is arranged between the first electrode (18) and the second electrode (20) such, that the upper side (14) comprises a first contact portion (22) being in contact with the first electrode (18) and a first free portion (24) not being in contact with the first electrode (18), and wherein the lower side (16) at least comprises a second contact portion (26) being in contact with the second electrode (20), and wherein a channel (36) is provided fluidly connecting at least a part of the first free portion (24) with a predetermined degassing point (38) of the housing for guiding an overpressure, which overpressure results from plasma and/or gas occurring in a failure mode during operation of the power semiconductor device, from the first free portion (24) to the predetermined degassing (38) point. A power semiconductor device (10) according to the present invention may enable a controlled escape of hot plasma and/or gas with high pressure, created in a critical failure mode, from the housing and at the same time preventing the hot plasma and/or gas from making damage to the heat- sinks or another parts of equipment in which the semiconductor device (10) was placed. The power semiconductor device (10) is thus at least partly prevented from explosion in the failure mode, safety of personnel manipulating with failed devices is improved, and the danger of damaging parts in the vicinity of the power semiconductor device (10) is reduced. |
