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Power module with low parasitic inductance layout

A low parasitic inductance, power module technology, applied in the direction of circuits, electrical components, electric solid-state devices, etc., can solve the problems of power electronic power module switching frequency increase, large parasitic inductance, voltage overshoot, etc., to increase overcurrent capability, Effect of reducing loop inductance and increasing power level

Active Publication Date: 2020-05-05
YANGZHOU GUOYANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to improve the working efficiency of the power electronic system, the power electronic power module is required to have a higher switching frequency, but the parasitic inductance of the traditional packaging structure is large, which causes a large voltage overshoot when the power electronic power device is switched, and increases the power of the power device. The risk of overvoltage breakdown limits the further improvement of the switching frequency of power electronic power modules

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  • Power module with low parasitic inductance layout
  • Power module with low parasitic inductance layout
  • Power module with low parasitic inductance layout

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Embodiment Construction

[0041] The technical solution of the present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0042] This embodiment proposes a new type of power module with low parasitic inductance and high reliability. By stacking the busbars and combining the reasonable layout of the internal circuit of the module, the purpose of reducing the parasitic inductance of the packaging structure is achieved; at the same time, the power terminal adopts ultrasonic The welding method improves the working life of the power electronic power module.

[0043] like Figure 1 to Figure 5 As shown, this embodiment takes the three-phase bridge structure as an example, including positive electrode 1, negative electrode 2, output electrode 3, outer frame, cover plate, heat dissipation bottom plate A, upper half-bridge drive terminal, lower half-bridge drive terminal and sampling Terminals, the positive electrode 1, negative electrode 2, and output electrod...

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Abstract

The invention discloses a power module with low parasitic inductance layout. The power module comprises an upper half-bridge switch unit and a lower half-bridge switch unit which are arranged on an insulating substrate. The upper half-bridge switch unit is arranged in the middle of the insulating substrate. A collector electrode or a drain electrode of the upper half-bridge switch unit is electrically connected with a positive electrode copper layer on the insulating substrate, and an emitter electrode or a source electrode of the upper half-bridge switch unit is electrically connected with anoutput electrode copper layer.

Description

technical field [0001] The invention belongs to the field of power electronic power modules, in particular to a power module with low inductance circuit layout. Background technique [0002] Power electronics technology occupies a very important position in today's fast-growing industrial field. As a representative of power electronics technology, power electronics power modules have been widely used in electric vehicles, photovoltaic power generation, wind power generation, industrial frequency conversion and other industries. With the rise of my country's industry, power electronics power modules have a broader market prospect. [0003] In order to improve the working efficiency of the power electronic system, the power electronic power module is required to have a higher switching frequency, but the parasitic inductance of the traditional packaging structure is large, which causes a large voltage overshoot when the power electronic power device is switched, and increases ...

Claims

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Application Information

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IPC IPC(8): H01L25/07H01L23/48H01L23/498
CPCH01L25/072H01L23/48H01L23/49838H01L2224/49111H01L2224/48139H01L2924/19107H01L2224/49113H01L2224/40137
Inventor 王刚明牛利刚王玉林
Owner YANGZHOU GUOYANG ELECTRONICS CO LTD