Abstract:
Background In all-solid-state Marx pulse generators, the isolated gate driver plays a critical role in ensuring reliable high-voltage and high-speed switching. Conventional isolation driving schemes based on magnetic-core transformers often suffer from large volume, high cost, and poor integration, which limit further miniaturization and system-level integration.
Purpose To address these issues, this study proposes a synchronous isolated gate driving scheme based on a PCB-embedded coreless transformer, aiming to reduce driver size and cost while improving integration and manufacturability for all-solid-state Marx pulse generator applications.
Methods The proposed coreless transformer was first modeled, and its key electromagnetic parameters were extracted using Q3D electromagnetic simulation and validated through experimental measurements. Based on theoretical analysis and LTspice simulations of the driving circuit, the operating principles and driving sequence characteristics were investigated and compared with those of conventional magnetic-core transformer-based drivers. Finally, a prototype driving system was developed and experimentally evaluated.
Results Simulation and experimental results show that the proposed PCB coreless transformer-based driving scheme exhibits a wide dynamic driving range, excellent electrical isolation performance, and good compatibility with standard PCB manufacturing processes. The experimental waveforms are consistent with theoretical analysis and simulation results, confirming the correctness of the proposed design and modeling approach.
Conclusions The proposed synchronous isolated driving scheme based on a PCB coreless transformer provides an effective solution to the challenges of volume, cost, and integration in conventional isolation drivers for all-solid-state Marx pulse generators. The results demonstrate its feasibility and strong potential for practical engineering applications in compact and highly integrated pulsed power systems.
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