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How can the interference immunity of the power DTU data upload link be improved?

Time：2025-11-16 Views：505次

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Improving the immunity of the DTU data upload link requires optimization at both the physical and protocol layers. Physical layer: Use shielded cables, and add common-mode inductors (CML3225A-510T) and TVS protection to the interfaces. Protocol layer: Add Forward Error Correction (FEC) and Automatic Repeat Request (ARQ). Employ a heartbeat mechanism to detect link status and switch to a backup link in case of anomalies. Testing should meet IEC61000-4-2 ESD ±8kV and IEC61000-4-4 EFT ±4kV. After improving immunity, the data upload success rate should be greater than 99.9% under interference conditions.

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