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A novel X-type boost switched capacitor multilevel inverter utilizing a single power supply is proposed. It has a great application potential in the field of new energy power generation and high frequency scenarios. The proposed topology mainly has the following advantages. Firstly, the proposed topology avoids the use of H-bridge to output bipolar level, so that the maximum inverse voltage stress of the switch does not exceed 4Vdc. Secondly, the maximum switching frequency of the proposed topology is 3 times the fundamental frequency, which provides an opportunity for the application of the inverter in high frequency engineering. Thirdly, the charging of the bridge arm capacitors is synchronous, which simplifies the modulation strategy of the extended topology. Moreover, the operating principle of the topology was analyzed in detail, and the feasibility of the inverter and the correctness of the modulation strategy were verified.