中圖分類號(hào)：TN710 文獻(xiàn)標(biāo)志碼：A DOI: 10.16157/j.issn.0258-7998.234530
中文引用格式： 劉期輝，高文雷，崔瑤，等. 一種高效率行波管高壓電源的設(shè)計(jì)與實(shí)驗(yàn)研究[J]. 電子技術(shù)應(yīng)用，2024，50(5)：97-101.
英文引用格式： Liu Qihui，Gao Wenlei，Cui Yao，et al. Design and experimental study of a high-efficiency high-voltage power supply for travelling wave tube[J]. Application of Electronic Technique，2024，50(5)：97-101.

Design and experimental study of a high-efficiency high-voltage power supply for travelling wave tube

Abstract： This paper presents a half-bridge LLC resonant multistage high voltage converter circuit for 6~18 GHz 50 W ultra-small microwave power module. Through the design of half-bridge LLC resonant converter and the research of improved feedback loop based on type 3 phase compensator, the low-voltage 48 V is boosted to the 4-channel high voltage required by the cathode of the traveling wave tube and the three-stage step-down collector, and the overall high voltage efficiency is improved from 92% to 95% compared with the MPMs of the same power level. The experimental test efficiency reaches 95% in the range of input voltage 44~52 V, and the minimum efficiency exceeds 92%. The change of cathode voltage output is less than 1 V when the power supply switches between no load and full load.

Key words : LLC；high-voltage power supply；TWT；high efficiency；simulation