Three-level buck converter for envelope tracking applications
Three-level buck converter for envelope tracking applications
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DOI：
10.1109/tpel.2005.869728
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发表时间：
2006-03
影响因子：
6.7
通讯作者：
V. Yousefzadeh;Eduard Alarcon;D. Maksimović
中科院分区：
文献类型：
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作者：
V. Yousefzadeh;Eduard Alarcon;D. Maksimović
这封信提出了一种用于跟踪应用的三电平降压转换器，如射频功率放大器（rfpa）中的包络跟踪。结果表明，与标准降压变换器或两相降压变换器相比，三电平降压变换器在开关波纹、损耗、带宽或磁性元件尺寸方面具有优势。实验结果表明，在具有代表性的低功耗电池供电系统中，RFPA包络跟踪应用程序提高了效率和抑制纹波。
This letter proposes a three-level buck converter for tracking applications such as envelope-tracking in radio frequency power amplifiers (RFPAs). It is shown that the three-level buck converter can offer advantages in terms of switching ripples, losses, bandwidth, or the size of magnetic components compared to a standard buck or a two-phase buck converter. Experimental results illustrate improved efficiency and ripple rejection in an RFPA envelope-tracking application representative for low-power battery-operated systems.