A 20 MHz 200-500 mA Monolithic Buck Converter for RF Applications

2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI:10.1109/APEC.2009.4802705

J. Hannon, R. Foley, J. Griffiths, D. O'Sullivan, K. McCarthy, M. Egan

引用次数: 16

Abstract

In an RF system power amplifiers (PAs) typically consume the most power. This paper presents a buck converter design optimised for a wideband code division multiple access (WCDMA) PA. The design approach taken focuses on the optimization of switch sizing based on the overall power losses of the system including the output inductor losses. The converter is optimised for 20 MHz switching and output currents in the range of 200-500 mA. Experimented results are presented on the fabricated converter, with a maximum measured efficiency of 82%.

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用于射频应用的20 MHz 200-500 mA单片降压转换器

在射频系统中，功率放大器(pa)通常消耗最多的功率。本文提出了一种针对宽带码分多址(WCDMA) PA进行优化的降压变换器设计。所采用的设计方法侧重于基于系统的整体功率损耗(包括输出电感损耗)来优化开关尺寸。转换器优化为20 MHz开关和200-500 mA范围内的输出电流。实验结果表明，该变换器的效率最高可达82%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition

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