THREE PHASE INVERTER POWER STAGE AND ASSEMBLY
First Claim
1. A power stage for a multiphase converter having two d-c terminals and at least 3a-c terminals;
- said planar power stage comprising separate flat leadframes insulated from one another and connected to respective ones of said terminals;
each of said flat leadframes being generally co-planar;
said leadframes for said two d-c terminals being disposed one atop the other and having a generally rectangular planar shape with first and second sides and first and second ends;
said leadframes for said 3a-c terminals being disposed adjacent said first and second of said sides and one of said ends respectively and being coplanar with said leadframes for said two d-c terminals.
3 Assignments
0 Petitions
Accused Products
Abstract
A three phase invertor has five coplanar leadframes for 2d-c terminals and 3a-c terminals. Power MOSFETs soldered around the periphery of one of the d-c leadframes are wire bonded to adjacent ones of the 3a-c leadframes which are mounted alongside the two edges and an end of one of the d-c leadframes. Further switching die are soldered to the 3a-c leadframes and wire bonded to the other d-c leadframe. The die are spaced along and follow a general U-shaped path. The leadframes are mounted on a heat sink which receives an insulation spacer and cap to form a hermetically sealed volume around the leadframes and die. The heat sink has cavities to mount bus capacitors and has a water cooling channel which follows and is below the U-shaped path of the die.
113 Citations
24 Claims
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1. A power stage for a multiphase converter having two d-c terminals and at least 3a-c terminals;
- said planar power stage comprising separate flat leadframes insulated from one another and connected to respective ones of said terminals;
each of said flat leadframes being generally co-planar;
said leadframes for said two d-c terminals being disposed one atop the other and having a generally rectangular planar shape with first and second sides and first and second ends;
said leadframes for said 3a-c terminals being disposed adjacent said first and second of said sides and one of said ends respectively and being coplanar with said leadframes for said two d-c terminals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
- said planar power stage comprising separate flat leadframes insulated from one another and connected to respective ones of said terminals;
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22. A multiphase invertor assembly;
- said multiphase invertor assembly comprising a power stage consisting of a plurality of coplanar leadframes insulated from one another;
a plurality of semiconductor switching devices connected to selected ones of said leadframes;
a heat sink for receiving said power stage and in thermal communication with said plurality of semiconductor switching devices, an insulation frame enclosing the sides of said plurality of insulated leadframes, and a top cap fastened to said leadframe and in contact with said insulation frame and hermetically enclosing said leadframes and die in said enclosed volume;
said plurality of leadframes each having a terminal extending through said cap. - View Dependent Claims (23, 24)
- said multiphase invertor assembly comprising a power stage consisting of a plurality of coplanar leadframes insulated from one another;
Specification