Power converter having improved EMI shielding
First Claim
1. A modular power converter comprising:
- an EMI shielding assembly including a cooled support incorporating integral EMI shielding features and at least partially defining an electrical reference plane, and an enclosure at least partially surrounding the cooled support and electrically coupled to the reference plane, the EMI shielding and the cooled support being electrically contiguous with one another; and
a power electronics circuit supported on the cooled support;
the shielding assembly providing contiguous shielding having intrinsically low impedance paths for EMI originating from the power electronics circuit and from sources external to the shield assembly during operation.
1 Assignment
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Accused Products
Abstract
EMI shielding is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support forms a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.
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Citations
43 Claims
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1. A modular power converter comprising:
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an EMI shielding assembly including a cooled support incorporating integral EMI shielding features and at least partially defining an electrical reference plane, and an enclosure at least partially surrounding the cooled support and electrically coupled to the reference plane, the EMI shielding and the cooled support being electrically contiguous with one another; and a power electronics circuit supported on the cooled support; the shielding assembly providing contiguous shielding having intrinsically low impedance paths for EMI originating from the power electronics circuit and from sources external to the shield assembly during operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A modular power converter comprising:
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a power electronics circuit; an EMI shielding assembly including a support incorporating integral EMI shielding features that include a flange at least partially surrounding the support, and at least partially defining an electrical reference plane, and an enclosure at least partially surrounding the support and electrically coupled to the reference plane, the shielding assembly providing contiguous shielding having intrinsically low impedance paths for EMI originating from the power electronics circuit and from sources external to the shield assembly during operation; and low impedance conductive paths for EMI at connections to the EMI shielding assembly and power electronics circuit. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A modular power converter comprising:
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a power electronics circuit; an EMI shielding assembly including a support incorporating integral EMI shielding features that include a flange at least partially surrounding the support, and at least partially defining an electrical reference plane, and an enclosure at least partially surrounding the support and electrically coupled to the reference plane, the shielding assembly providing contiguous shielding having intrinsically low impedance paths for EMI originating from the power electronics circuit and from sources external to the shield assembly during operation; low impedance conductive paths for EMI at connections to the EMI shielding assembly and power electronics, circuit; and a connector system providing contiguous EMI shielding for conductors coupled between the power electronics circuit and external circuitry. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A modular power electronics module comprising:
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a cooled support having a base extending generally in a plane and an integral flange portion extending from the plane and substantially surrounding a component mounting area; an EMI shielding assembly electrically contiguous with the cooled support; and a power electronics circuit supported on the cooled support within the component mounting area; wherein the cooled support and the integral flange at least partially shield electromagnetic interference originating from the power electronics circuit during operation. - View Dependent Claims (38, 39, 40, 41, 42, 43)
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Specification