Semiconductor power module with SiC power diodes and method for its production
First Claim
1. A semiconductor power module comprising at least one field effect power semiconductor chip and a plurality of fail-safe, small-area SiC power diodes connected in parallel and disposed within a housing frame, wherein the function of a large-area SiC power diode chip which is susceptible to failure is distributed over the small-area, parallel-connected SiC power diodes in such a way that total area of active SiC diode areas corresponds to an area of a large-area non-fail-safe SiC power diode chip,wherein the small-area, parallel-connected SiC power diodes are arranged in rows and columns alongside one another, with one looped-through bonding wire in each row connecting electrodes on upper faces of the SiC power diode chips in one row, respectively and with a common looped-through bonding wire joining the bonding wires of the rows together along a column and connecting them directly, without any intervening electrodes, to a contact pad area of a flat conductor that passes through the housing frame.
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Accused Products
Abstract
A semiconductor power module has at least one power semiconductor chip (2) which can be controlled by the field effect and has a plurality of fail-safe, small-area SiC power diodes (D1 to D8). The function of a large-area SiC power diode chip which is susceptible to failure is distributed over these small-area, parallel-connected SiC power diode chips (D1 to D8) in such a way that their total area of active SiC diode areas (F1 to F8) corresponds to an area extent of a large-area non-fail-safe SiC power diode chip.
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Citations
10 Claims
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1. A semiconductor power module comprising at least one field effect power semiconductor chip and a plurality of fail-safe, small-area SiC power diodes connected in parallel and disposed within a housing frame, wherein the function of a large-area SiC power diode chip which is susceptible to failure is distributed over the small-area, parallel-connected SiC power diodes in such a way that total area of active SiC diode areas corresponds to an area of a large-area non-fail-safe SiC power diode chip,
wherein the small-area, parallel-connected SiC power diodes are arranged in rows and columns alongside one another, with one looped-through bonding wire in each row connecting electrodes on upper faces of the SiC power diode chips in one row, respectively and with a common looped-through bonding wire joining the bonding wires of the rows together along a column and connecting them directly, without any intervening electrodes, to a contact pad area of a flat conductor that passes through the housing frame.
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9. A semiconductor power module comprising at least one field effect power semiconductor chip and a plurality of fail-safe, small-area SiC power diodes connected in parallel and disposed within a housing frame, wherein the function of a large-area SiC power diode chip which is susceptible to failure is distributed over the small-area, parallel-connected SiC power diodes in such a way that a total area of active SiC diode areas corresponds to an area of a large-area non-fail-safe SiC power diode chip, wherein the electrodes on upper faces of the small-area SiC power diodes are electrically connected to one another via looped-through bonding connections, and the electrodes on rear faces of the small-area SiC power chips are electrically connected to one another via a metallic layer, with the rear faces being electrically connected to the metallic layer via a diffusion solder,
wherein the small-area, parallel-connected SiC power diodes are arranged in rows and columns alongside one another, with one looped-through bonding wire in each row connecting electrodes on upper faces of the SiC power diode chips in one row, respectively and with a common looped-through bonding wire joining the bonding wires of the rows together along a column and connecting them directly, without any intervening electrodes, to a contact pad area of a flat conductor that passes through the housing frame.
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10. A semiconductor power module comprising:
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a housing frame; a field effect power semiconductor chip disposed within the housing frame; a flat conductor passing through the housing frame; and a plurality of SiC power diodes connected in parallel and disposed within the housing frame, wherein the SiC power diodes are arranged in rows alongside one another, wherein in each of the rows a looped-through bonding wire connects electrodes of the SiC power diodes in that respective row, and wherein a common looped-through bonding wire joins the bonding wires of the rows together and connects them directly, without any intervening electrodes, to the flat conductor.
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Specification