High-power, integrated AC switch module with distributed array of hybrid devices
First Claim
1. A semiconductor bi-directional (AC) power switch comprising:
- IGBTs; and
arrays of wide band-gap diodes, said IGBTs and diode arrays connected in a circuit to provide a four-quadrant power switch.
1 Assignment
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Accused Products
Abstract
A novel architecture of high-power four-quadrant hybrid power modules based on high-current trench gate IGBTs and arrays of low-current wide-bandgap diodes is conceived. The distributed physical layout of high power density wide-bandgap devices improves the cooling inside a fully-sealed module case, thus avoiding excessive internal heat flux build up and high PN junction temperature, and benefiting the converter'"'"'s reliability and efficiency. The design of multiple-in-one hybrid integrated AC-switch module at high power ratings is enabled by using hybrid AC switch cells and aluminum nitride substrate structure.
43 Citations
31 Claims
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1. A semiconductor bi-directional (AC) power switch comprising:
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IGBTs; and
arrays of wide band-gap diodes, said IGBTs and diode arrays connected in a circuit to provide a four-quadrant power switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An AC switch comprising:
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a pair of IGBTs connected in a common collector configuration and in a circuit to provide a four-quadrant AC switch, each IGBT being of the non-punch through trench gate type;
an array of diodes associated with each IGBT, each array having a plurality of wide band-gap diodes connected in parallel between the emitter and collector of its associated IGBT, such that each diode defines a circuit branch, the total current passing through the diode array associated with one of the IGBTs being approximately equal to the total current passing through the diode array associated with the other IGBT. - View Dependent Claims (10, 11, 12)
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13. An AC switch module comprising:
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at least one AC switch, said switch comprising a pair of IGBTs connected in a common collector configuration in a circuit to provide a four-quadrant AC switch, each IGBT being of the trench gate type; and
an array of diodes associated with each IGBT, each array having a plurality of wide band-gap diodes connected in parallel between the emitter and collector of its associated IGBT, such that each diode defines a circuit branch, the total current passing through the diode array associated with one of the IGBTs being approximately equal to the total current passing through the IGBT associated with the other diode array;
a base-plate;
said IGBTs and diodes configured relative to said base-plate for the dissipation of heat generated by said IGBTs and diodes through said base-plate. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. An AC switch module comprising:
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at least one AC switch, said switch comprising;
a pair of IGBTs connected in a common collector configuration in a circuit to provide a four-quadrant AC switch, each IGBT being of the trench gate type; and
an array of wide band-gap diodes associated with each IGBT;
said module further comprising;
a base-plate, said IGBTs and diodes configured relative to said base-plate for the dissipation of heat generated by said IGBTs and diodes through said base-plate, the configuration of one IGBT and its associated diodes being symmetrical with respect to the configuration of the other IGBT and its associated diodes about a straight line on the plane of said base-plate. - View Dependent Claims (23, 24, 25, 26)
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27. A switch module comprising:
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at least one IGBT;
an array of diodes connected in an electric circuit with said IGBT; and
a base-plate, said IGBT and diodes mounted relative to said base-plate for the dissipation of heat generated by said IGBT and diodes through said base-plate, and being configured relative to said base-plate such that the IGBT and diodes are symmetrically arranged about a straight line on the plane of the base-plate. - View Dependent Claims (28, 29, 30, 31)
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Specification