Insulated-gate bipolar transistor (IGBT) power modules mounted on direct-bonded copper (DBC) substrates face reliability limits from mechanical effects introduced during manufacturing. Warpage, ceramic stress, and solder strain can all degrade performance and shorten service life, making design choices critical.
A new preprint on arXiv proposes a surrogate-assisted approach to address this problem. The authors train regression models to approximate the behavior of an open-source process finite-element model, which avoids the heavy computational cost of running full simulations for every design candidate. They then apply Simplified Swarm Optimization to navigate the design space efficiently.
The abstract is brief, but the combination points toward a low-cost, open-source strategy for reliability-oriented design of power modules. By targeting the specific failure drivers of warpage, ceramic stress, and solder strain, the method aims to improve module robustness without relying on proprietary simulation tools.