Speaker
Description
Compact cyclotrons need kilovolt Radiofrequency in the MHz range, yet product changeovers increasingly demand drives that can retune frequency, amplitude, and duty cycle. We report the design and experimental validation of a high-voltage, low-MHz transformer/matching network tailored for a digitally synthesized, soft-square Class-D driver. The method co-optimizes magnetizing inductance, leakage inductance, and winding capacitance to preserve Zero Voltage Switching and constrain dv/dt under variable frequency (2-4 MHz) and duty cycle. In this paper we provide a CAD layout and calculation and simulations and adjusting properties, resulting in an optimal geometry of the transformer.
These calculations adjusted the range of each property of the transformer in order to work within required range of frequency and voltage. These are material choice, quantification of the coupling k, spacing trade-off, and production of parameters suitable for 2-4 MHz operation and the design of the secondary circuit. This establishes a reproducible path from geometry to circuit model for a high-voltage RF transformer supporting agile RF drives.
Funding Agency
Bayerisches Staatsministerium für Wissenschaft und Kunst
