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实用新型
CN2796236Y 一种DC/DC电源变换器 失效 - 权利终止 转让 许可

一种DC/DC电源变换器
摘要：
本实用新型涉及一种新型的DC/DC电源变换器，该变换器由主开关元件T、平波电抗器L、滤波电容E和续流二极管D组成，续流二极管D和滤波电容E分别连接在平波电抗器L的首端和尾端形成π型续流稳压电路，所述平波电抗器L首尾端之间设有抽头，所述主开关元件T的电流输出端通过该抽头与平波电抗器L连接在一起。滤波电抗器L采用了抽头接线方式，能最大限度降低开关元件T的开关损耗，并减小EMI。可用于500V以下输入电压等级的各种DC/DC降压变换场合。
摘要（英）：

The utility model relates to a novel DC/DC power converter which is composed of a main switch element T, a smoothing reactor L, a filtering capacitor E, and a follow current diode D, wherein the follow current diode D and the filtering capacitor E are respectively connected to the head and the tail ends of the smoothing reactor L so as to form a pi-type follow current voltage stabilizing circuit. A tapping point is arranged between the head and the tail ends of the smoothing reactor L. The current output end of the main switch element T is connected together with the smoothing reactor L by the tapping point. The smoothing reactor L adopts the connecting mode of the tapping point, and the switching loss of the switch element T is furthest decreased, and EMI is reduced. The utility model can be used for various occasions of DC/DC voltage reduction and conversion below 500V input voltage grade.

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