Electromagnetic interference-prevention power regulation circuit integrated module and installation method thereof

Abstract

The invention provides an electromagnetic interference-prevention power regulation circuit integrated module and an installation method thereof. The electromagnetic interference-prevention power regulation circuit integrated module comprises a copper-coated ceramic substrate and power regulation circuit components and also comprises a shell, wherein the power regulation circuit components are arranged on the copper-coated ceramic substrate, the copper-coated ceramic substrate and the power regulation circuit components are arranged in the shell, the copper-coated ceramic substrate comprises aceramic layer at a bottom layer and a copper-coated layer at an upper layer, the shell comprises a shell body, an upper cover plate and lead terminals, the shell body wraps bottom surfaces and peripheries of the copper-coated ceramic substrate and the power regulation circuit components, the upper cover plate covers the top of the shell body, and the lead terminals are used for connecting the interior and the exterior of the shell body. The electromagnetic interference-prevention power regulation circuit integrated module has the beneficial effects that a power regulation circuit with relatively serious electromagnetic interference is completely sealed in the shell, the distribution parameter of a power device interconnection loop is reduced, and the electromagnetic radiation of the powerregulation circuit is effectively shielded; and with the adoption of a material with favorable heat conductivity, the thermal resistance between a power semiconductor component and the whole structureis reduced.

Description

technical field [0001] The invention belongs to the technical field of physical power sources, and in particular relates to a power circuit integrated module and an assembly method that can effectively reduce the electromagnetic interference of space power sources. Background technique [0002] As an important part of the power regulation circuit, high-power semiconductor components are widely used in spacecraft power control equipment, and the switching noise generated by them has also become the main source of EMI (Electro-Magnetic Interference, electromagnetic interference). The two main factors of poor electromagnetic compatibility CE102 and RE102 affect the electromagnetic compatibility of the entire spacecraft. [0003] At present, magnetic materials such as inductors and transformers used in power control equipment usually adopt electromagnetic shielding measures such as external magnetic cylinders, but for high-power semiconductor components that are equally serious ...

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Problems solved by technology

[0002] As an important part of the power regulation circuit, high-power semiconductor components are widely used in spacecraft power control equipment, and the switching noise generated by them has also become the main source of EMI (Electro-Magnetic Interference, electromagnetic interference). The two main factors of poor electromagnetic compatibility CE102 and RE102, which in turn affect the electromagnetic compatibility of the entire spacecraft

[0003] At present, magnetic materials such as inductors and transformers used in power control equipment usually adopt electromagnetic shielding measures such as external magnetic cylinders, but for high-power semiconductor components that are equally serious for EMI, discrete components are generally used to weld them separately, so that they can be used in a single machine. The interior is exposed, and this assembly method has a long wiring distance and many wiring harnesses, which increases the stray parameters on the power path. On the one hand, it enhances the electromagnetic radiation and electromagnetic conduction caused by the switching noise of power semiconductor devices. On the other hand, it weakens the Inhibition effect of filter circuit on EMI conduction

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