Power Module Compensation Layer for Low Intrinsic Inductance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power modules face challenges in reducing intrinsic inductance, which affects performance, efficiency, ampacity, reliability, and manageability, particularly in high-voltage applications.
Innovation Solution
A power module with a partially electrically insulating layer and a conductive compensation layer applied to its opposite side, which is connected to an electric potential, is used to reduce intrinsic inductance by compensating for it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional power module structure is used, then manufacturing simplicity is maintained, but intrinsic inductance remains high affecting performance
Solution Approach 1:
The module structure is segmented into distinct functional layers: a first substrate for power electronics components, a second substrate for signal processing, and an intermediate insulating layer. This segmentation allows independent optimization of each layer while reducing overall intrinsic inductance through controlled impedance management.
Solution Approach 2:
An intermediate insulating layer with specific dielectric properties is introduced between the first and second substrates. This intermediary layer serves as a mediator that controls electromagnetic field distribution, reduces parasitic inductance, and maintains electrical isolation while enabling improved signal integrity and power delivery.
2Power
If high voltage handling capability is increased, then power conversion performance improves, but intrinsic inductance effects become more significant
Solution Approach 1:
The dielectric constant and loss tangent parameters of the insulating layer are specifically optimized to change the electromagnetic field distribution characteristics. By adjusting these material parameters, the design achieves reduced parasitic inductance effects while maintaining high voltage handling capability through controlled impedance management.
Solution Approach 2:
The module employs composite material construction with the insulating layer having specific dielectric properties positioned between conductive substrates. This composite structure creates favorable electromagnetic field distribution that reduces intrinsic inductance while maintaining high voltage isolation, enabling improved power handling with reduced inductive effects.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces intrinsic inductance, enhancing performance, efficiency, ampacity, reliability, and manageability of power modules, especially in high-voltage environments.
Implementation Method 1
the intrinsic inductance of a power module can be reduced by an electrically conductive compensation layer to which an electric potential is applied
Data Source
AI summary
A power module having reduced intrinsic inductance has an at least partially electrically insulating layer that has a first surface on which a power electronics unit is arranged and a second surface which is opposite the first surface. The module also has a compensation layer arranged on the second surface, which the compensation layer is electrically conductive and which the compensation layer is electrically connected to the electric potential of the power electronics unit.