The present invention discloses a
power module structure and a manufacture method thereof. The
power module structure comprises: a main switch device has the same
voltage grade with a freewheeling
diode, and has the same size of the current with the freewheeling
diode; the collector of the main switch device is bonded with the
cathode of the freewheeling
diode, and the main switch device is welded on a liner plate in an inverted mode; the liner plate is provided with a plurality of discrete
copper-cladding layer; the emitting
electrode of the main switch device is welded with the first
copper-cladding layer of the liner plate, and a grid is welded with the second
copper-cladding layer on the liner plate; and the collector outgoing line of the main switch device is bonded with the third copper-cladding layer of the liner plate, and the
anode outgoing line of the freewheeling diode is bonded with the fourth copper-cladding layer on the liner plate. The
power module structure and manufacture method thereof realize the compaction and the
miniaturization and improve the
power density of the power module through
welding the bonded main switch device and the freewheeling diode on the liner plate.