期刊
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
卷 69, 期 8, 页码 7897-7908出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2021.3106010
关键词
Switches; Voltage control; Capacitors; Regulation; Inductors; Switching frequency; Frequency modulation; Full-range voltage regulation; ladder converter; resonant switched-capacitor converter (RSCC); switching technique
资金
- Natural Science Foundation of Zhejiang Province [LQ22E070005]
This article introduces a new full-range regulation method for step-up ladder RSCCs along with seven switching techniques. The ladder RSCCs with the proposed switching techniques feature the merits of simple control, soft switching, and high efficiency.
Ladder resonant switched-capacitor converters (RSCCs) provide high step-up voltage gain, but the continuous regulation range is typically limited with an extremely wide switching frequency band. This article introduces a new full-range regulation method for step-up ladder RSCCs along with seven switching techniques. Each switching technique offers multiple possibilities for implementation. Furthermore, ladder RSCCs with the proposed switching techniques feature the merits of simple control, soft switching, and high efficiency. A comprehensive analysis of operation principle, voltage gain curves, device stress, active switch utilization, zero voltage switching range, output voltage ripple, and input current ripple is given for the proposed seven switching techniques. A 3X step-up Ladder RSCC prototype was built and tested to validate the theoretical results.
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