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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2605.24877 |
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| _version_ | 1866914597374525440 |
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| author | Krishnakumar, Sriharini Partin-Vaisband, Inna |
| author_facet | Krishnakumar, Sriharini Partin-Vaisband, Inna |
| contents | Distributed vertical power delivery has emerged as a promising approach to meet aggressive current-density, efficiency, and transient response requirements in high-performance computing systems. Tight integration of voltage regulators within stacked substrates, however, increases the vulnerability of the power delivery system to short-circuit and open-circuit faults arising from elevated thermal and mechanical stresses. Such faults can propagate through the shared power delivery network, leading to rapid degradation of system-wide efficiency at worst-case rates of up to 0.5% per microsecond. Advanced fault-tolerant power management strategies are therefore required to ensure efficient power delivery. A real-time fault-detection and isolation methodology are proposed in this paper for vertical power delivery systems. The methodology is developed based on an analytical inductor-current models that rely solely on signals available within the converter control circuitry, thereby eliminating additional sensing overhead. The proposed framework is designed and simulated in SPICE environment, demonstrating sub-microsecond fault detection and effective dual-fuse isolation, maintaining uninterrupted power delivery with a system-wide efficiency degradation of less than 2%. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_24877 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Power-Integrity Modeling of VR Faults in High-Performance Applications Krishnakumar, Sriharini Partin-Vaisband, Inna Systems and Control Distributed vertical power delivery has emerged as a promising approach to meet aggressive current-density, efficiency, and transient response requirements in high-performance computing systems. Tight integration of voltage regulators within stacked substrates, however, increases the vulnerability of the power delivery system to short-circuit and open-circuit faults arising from elevated thermal and mechanical stresses. Such faults can propagate through the shared power delivery network, leading to rapid degradation of system-wide efficiency at worst-case rates of up to 0.5% per microsecond. Advanced fault-tolerant power management strategies are therefore required to ensure efficient power delivery. A real-time fault-detection and isolation methodology are proposed in this paper for vertical power delivery systems. The methodology is developed based on an analytical inductor-current models that rely solely on signals available within the converter control circuitry, thereby eliminating additional sensing overhead. The proposed framework is designed and simulated in SPICE environment, demonstrating sub-microsecond fault detection and effective dual-fuse isolation, maintaining uninterrupted power delivery with a system-wide efficiency degradation of less than 2%. |
| title | Power-Integrity Modeling of VR Faults in High-Performance Applications |
| topic | Systems and Control |
| url | https://arxiv.org/abs/2605.24877 |