Power semiconductor module and method for operating a power semiconductor module
First Claim
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1. A power semiconductor module for use in a converter, which has a rectifier circuit and an inverter circuit, comprising:
- a housing;
a first power semiconductor chip, which is a component part of the rectifier circuit and has a first semiconductor body with an upper chip metallization and a lower chip metallization;
a second power semiconductor chip, which is a component part of the inverter circuit and has a second semiconductor body with an upper chip metallization and a lower chip metallization; and
at least one ceramic substrate;
wherein the first power semiconductor chip and the second power semiconductor chip are arranged in the housing;
wherein the upper chip metallization of the first power semiconductor chip is adjoined by an aluminum-based bonding wire with an aluminum fraction of at least 99% by weight aluminum;
wherein the upper chip metallization of the second power semiconductor chip is adjoined by a copper-based bonding wire with a copper fraction of at least 99% by weight copper; and
wherein the lower chip metallization of the first power semiconductor chip is adjoined directly by a fusion soldering layer or the lower chip metallization of the second power semiconductor chip is adjoined directly by one of the following;
a silver-containing sintering layer;
an adhesive bonding layer or a diffusion soldering layer.
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Abstract
A power semiconductor module is provided in which power semiconductor chips with an aluminum-based chip metallization and power semiconductor chips with a copper-based chip metallization are included in the same module, and operated at different barrier-layer temperatures during use.
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Citations
25 Claims
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1. A power semiconductor module for use in a converter, which has a rectifier circuit and an inverter circuit, comprising:
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a housing; a first power semiconductor chip, which is a component part of the rectifier circuit and has a first semiconductor body with an upper chip metallization and a lower chip metallization; a second power semiconductor chip, which is a component part of the inverter circuit and has a second semiconductor body with an upper chip metallization and a lower chip metallization; and at least one ceramic substrate; wherein the first power semiconductor chip and the second power semiconductor chip are arranged in the housing; wherein the upper chip metallization of the first power semiconductor chip is adjoined by an aluminum-based bonding wire with an aluminum fraction of at least 99% by weight aluminum; wherein the upper chip metallization of the second power semiconductor chip is adjoined by a copper-based bonding wire with a copper fraction of at least 99% by weight copper; and wherein the lower chip metallization of the first power semiconductor chip is adjoined directly by a fusion soldering layer or the lower chip metallization of the second power semiconductor chip is adjoined directly by one of the following;
a silver-containing sintering layer;
an adhesive bonding layer or a diffusion soldering layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification