Integrated Current Metering Unit in Semiconductor Power Modules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional semiconductor power modules with external or integrated current metering units require significant space and incur additional costs and weight due to the incorporation of current sensors.
Innovation Solution
A semiconductor power module with an integrated current metering unit, comprising a current sensor IC, PCB, and U-shaped shield embedded in a plastic compound, allowing for a press-fit connection to a drive circuit board and eliminating the need for additional connectors and shielding elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current sensors are incorporated into the power module, then current metering function is achieved, but space requirement and weight increase
Solution Approach 1:
The patent combines the current sensor, PCB, and shielding elements into a single integrated current metering unit that is embedded within the semiconductor power module housing. This merging eliminates the need for separate external current metering components, thereby achieving the current measurement function while minimizing additional weight and space requirements.
2Reliability
If current sensors are incorporated into the power module, then current metering function is achieved, but space requirement increases
Solution Approach 1:
The current metering unit is nested within the existing semiconductor power module housing structure. The sensor, PCB, and shielding elements are arranged in a compact nested configuration that utilizes the available internal space of the module, thereby achieving current measurement functionality without significantly increasing the overall module footprint.
3Reliability
If external current metering unit is used, then current measurement is achieved, but additional components and connectors are required
Solution Approach 1:
The patent integrates the current sensor, PCB, and shielding elements into a single unified current metering unit that is embedded within the power module housing. This merging eliminates the need for separate external current metering components, connectors, and additional shielding elements, thereby reducing device complexity while maintaining current measurement functionality.
Data Source
AI summary
Systems include a semiconductor power module embedded in plastic and having an integrated current metering unit, for example, for a pulse inverter of an electric vehicle, an arrangement including the module, and a method for its manufacture.