Small size and low weight DC/DC converter with no magnetic elements

Proceedings of Intelec 94 Pub Date : 1994-10-30 DOI:10.1109/INTLEC.1994.396594

O. Mak, A. Ioinovici

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引用次数: 8

Abstract

A new type of DC power supply containing no inductors or transformers is presented. The DC-to-DC boost power converter contains only switches and capacitors. The switching-capacitor circuit is used for controlling the DC energy transfer from an unregulated input voltage to a regulated output. The output voltage is kept constant despite large variation in the input voltage or load. The power converter operates at a constant switching frequency, the regulation being of PWM type. The operation of the main switches in the energy flow path is dictated by the output of a PWM chip. The absence of magnetic elements in the power converter structure guarantees an overall small size, low weight and high power density. The design of the circuit parameters (capacitor values and switching frequency) assures minimum losses of energy at the switching moments. The transient currents have nondangerous peaks; consequently, no overrating of the transistors is necessary, assuring small conduction losses. As a result, the new power converter presents high efficiency. Experimental results, obtained on a prototype built according to the exposed design procedure, are presented.<>

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体积小，重量轻，无磁性元件的DC/DC变换器

提出了一种不含电感和变压器的新型直流电源。dc - dc升压电源转换器只包含开关和电容器。开关电容电路用于控制直流能量从非稳压输入电压向稳压输出电压的转移。尽管输入电压或负载变化很大，输出电压仍保持恒定。功率变换器工作在一个恒定的开关频率，调节是PWM类型。能量流路径中主开关的操作由PWM芯片的输出决定。功率变换器结构中不含磁性元件，保证了整体尺寸小、重量轻、功率密度高。电路参数(电容值和开关频率)的设计保证了开关时刻能量损失最小。瞬态电流有不危险的峰值;因此，没有晶体管的高估是必要的，确保小的传导损耗。结果表明，新型功率变换器具有较高的效率。本文给出了根据暴露设计程序在样机上得到的实验结果。

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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Proceedings of Intelec 94

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