Low parasitic inductance power module having staggered, interleaving conductive busbars

A low parasitic inductance power module having staggered, interleaving conductive busbars, comprising:

• at least one base extending along a length direction, the base having two opposite side edges in the length direction, at least one current input busbar and at least one current output busbar, which are mutually insulative, being disposed at positions corresponding to one of the two opposite side edges, the current input busbar and the current out busbar being formed with a plurality of interdigitated contact terminals, respectively;
• a first unit comprising at least one first circuit base portion, on the first circuit base portion being disposed a plurality of first power devices, each of the first power devices having a first current input end and a first current output end, the first current input ends of all first power devices being parallel connected, the first current output ends of all first power devices being parallel connected, wherein the first current input ends are conductively mounted to the first circuit base portion, or alternatively, the first current output ends are conductively mounted to the first circuit base portion;
• and
• a second unit comprising at least one second circuit base portion, the second circuit base portion being spaced from the first circuit base portion, on the second circuit base portion being disposed a plurality of second power devices, each of the second power devices having a second current input end and a second current output end, the second current inputs of all second power devices being parallel connected, the second current output ends of all second power devices being parallel connected;
• wherein the second current input ends are conductively mounted to the second circuit base portion, or alternatively, the second current output ends are conductively mounted to the second circuit base portion;
• wherein one end of the first unit and one end of the second unit are serially connected via a plurality of serially-connected conductive members;
• wherein the other end of the first unit opposite the serially-connected end and the other end of the second unit opposite the serially-connected end are serially connected to the current input busbar and the current output busbar via a plurality of input conductive members and a plurality of mutually staggered output conductive members, respectively;
• wherein when the interdigitated contact terminals of the current input busbar and the interdigitated contact terminals of the current output busbar correspond at lengthwise positions, their projections on a plane formed by the length direction and the width direction are arrayed pairwise in a staggered, interleaving fashion with each pair including one interdigitated contact terminal of the current input busbar and one interdigitated contact terminal of the current output busbar, whereby when current flows through the interdigitated contact terminals of the current input busbar and the interdigitated contact terminals of the current output busbar, individual inductances produced thereby are cancelled with each other, whereby overall parasitic inductance of the power module is reduced.