A GaN-based flying-capacitor multilevel boost converter for high step-up conversion
A GaN-based flying-capacitor multilevel boost converter for high step-up conversion
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一种基于 GaN 的飞电容多级升压转换器，用于高升压转换
DOI：
10.1109/ecce.2016.7854684
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
R. Pilawa
中科院分区：
文献类型：
--
作者：
Zitao Liao;Y. Lei;R. Pilawa
紧凑型高升压DC/DC变换以提供高直流电压有着广泛的应用。传统的Boost转换器在获得高功率密度和高效率的高电压增益方面有许多局限性。飞行电容多电平(FCML)转换器拓扑结构具有许多固有的优点，可以克服传统Boost转换器的许多局限性。实现了GaN基七电平飞电容多电平Boost转换器样机，在测试负载范围内实现了输出功率为750W时100V至914V的转换，峰值效率为92.7%；输出功率为900W时的200V至966V的转换，峰值效率为93.7%。
Compact high step-up DC/DC conversion to provide high DC voltage has numerous applications. A conventional boost converter has many limitations with regard to achieving high voltage gain with high power density and efficiency. The flying-capacitor multilevel (FCML) converter topology has many inherent advantages to overcome many of the limitations of the conventional boost converter. In this work, a GaN-based 7-level flying capacitor multilevel boost converter prototype has been implemented and achieved 100 V to 914 V conversion at 750 W output power with 92.7% peak efficiency, and 200 V to 966 V conversion at 900 W output power with 93.7% peak efficiency within the tested load range.