A highly efficient interleaved DC-DC converter using coupled inductors in gaas technology

Han Peng, T. Chow, M. Hella
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引用次数: 3

Abstract

This paper presents a high power efficiency DC-DC buck converter in Gallium Arsenide technology targeting integrated power amplifier modules. The buck converter adopts an interleaved structure with negatively coupled inductors. Analysis of the effect of coupling on the steady state and transient response of the converter is given. The coupling factor is selected to achieve a maximum power efficiency for a given duty cycle with a minimum penalty on current ripple performance. The DCDC converter is implemented in 0.5µm GaAs pHEMT process and occupies 2.7×2.7mm2 without the output network. It converts 4.5V input to 3.3V output for 1A load current under 250MHz switching frequency with a power efficiency of 86.1%.
gaas技术中使用耦合电感的高效交错DC-DC变换器
针对集成功率放大器模块,提出了一种基于砷化镓技术的高效率DC-DC降压变换器。降压变换器采用带负耦合电感的交错结构。分析了耦合对变换器稳态和瞬态响应的影响。耦合系数的选择是为了在给定的占空比下实现最大的功率效率,同时对电流纹波性能的影响最小。DCDC变换器采用0.5µm GaAs pHEMT工艺实现,不占用输出网络2.7×2.7mm2。在250MHz开关频率下,在1A负载电流下将4.5V输入转换为3.3V输出,功率效率为86.1%。
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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