Power tube structure and power converter

Abstract

The invention provides a power tube structure and a power converter. The power converter comprises at least one transistor. In the power tube structure, each transistor is packaged by adopting 4-PIN,and a packaging pin of each transistor comprises a signal source electrode pin, a power source electrode pin, a drain electrode pin and a gate electrode pin; wherein the source electrode pins of the transistor are divided into a power source electrode pin and a signal source electrode pin, so that the transistor realizes the connection between the source electrode of the transistor and a circuit board and the connection between the transistor and a corresponding power busbar through the power source electrode pin and the signal source electrode pin of the transistor; as the connecting points on the pins of the transistor only need to be welded once, the influence of welding deformation on the position relationship between the pins and the corresponding welding holes can be reduced, namely,the influence of welding deformation on the installation and connection among the transistor, the power busbar and the circuit board is reduced; therefore, the installation and connection precision among the transistor, the power busbar and the circuit board can be improved.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a power tube structure and a power converter. Background technique [0002] In the structure of multi-tube parallel inverter based on discrete devices, such as figure 1 As shown, the source pin 102 of the transistor 100 is cut short, first soldered to the power bus bar 110 , and then soldered to the circuit board through the fin 101 on the power bus bar 110 . [0003] However, in practical applications, it is found that when the source pin 102 of the transistor is welded to the fin 101 on the power bus bar 110, the fin 101 on the power bus bar 110 is easily deformed, which may cause The fins 101 cannot be aligned with the corresponding soldering holes on the circuit board 103 , and if the distance between them is too large, the installation and connection cannot be completed. Contents of the invention [0004] In view of this, the present invention provides a power ...

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Problems solved by technology

[0003] However, in practical applications, it is found that when the source pin 102 of the transistor is welded to the fin 101 on the power bus bar 110, the fin 101 on the power bus bar 110 is easily deformed, which may cause The fins 101 cannot be aligned with the corresponding soldering holes on the circuit board 103. If the distance between the two is too large, the installation and connection cannot be completed.

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