Power Semiconductor Module Terminal Segmentation
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Solution Overview
Problem
Power semiconductor module arrangements face challenges in achieving improved switching characteristics, particularly in meeting creepage distance requirements and optimizing terminal positioning for efficient electrical connections.
Innovation Solution
The power semiconductor module arrangement includes a housing with strategically positioned terminals grouped by electrical potential, with each group located in distinct sections to minimize voltage drops and optimize conductor track lengths, featuring a first switching element and a second switching element connected in series between supply nodes and an output node, with auxiliary emitter terminals for reduced feedback effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals are positioned to optimize electrical connections and minimize voltage drops, then switching characteristics are improved, but creepage distance requirements may not be met
Solution Approach 1:
The housing is divided into three distinct sections along the longitudinal direction: a first section for first terminals (first electrical potential), a second section for second terminals (second electrical potential), and a third section for third terminals (output potential) and control terminals. This segmentation spatially separates terminals of different potentials, ensuring adequate creepage distances while optimizing electrical connections within each section.
Solution Approach 2:
The patent transitions from a two-dimensional terminal arrangement to a three-dimensional sectional layout within the housing. By organizing terminals into distinct longitudinal sections (first section, second section, third section), the design achieves both compactness and adequate creepage distances through spatial distribution in the longitudinal dimension.
2Loss of energy
If terminals of the same electrical potential are positioned close together to minimize conductor track lengths, then voltage drops are reduced, but creepage distance requirements may be compromised
Solution Approach 1:
Terminals of the same electrical potential are grouped together in the same housing section: all first terminals (first electrical potential) in the first section, all second terminals (second electrical potential) in the second section, and all third terminals (output potential) in the third section. This equipotential grouping minimizes conductor track lengths and voltage drops while the sectional separation ensures creepage distance compliance.
3Volume of moving object
If the housing layout is optimized for compactness, then device size is reduced, but terminal positioning for optimal switching characteristics becomes difficult
Solution Approach 1:
The housing is segmented into three compact longitudinal sections, each containing terminals of the same electrical potential. This segmentation enables a compact overall housing design while maintaining optimal terminal positioning within each section for minimized conductor track lengths and improved switching characteristics.
Data Source
AI summary
A power semiconductor module arrangement includes a first switching element and a second switching element, each having a control terminal and a controllable load path between two load terminals, the load paths being operatively coupled in series and between a first supply node, and a second supply node. The switching elements are connected with each other via a first common node. An output node configured to be coupled to an output potential is coupled to the first common node. The first supply node is formed by a plurality of first terminals, the second supply node is formed by a plurality of second terminals, and the output node is formed by a plurality of third terminals. The switching elements are arranged inside a housing.