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A buffer circuit, device and method

A snubber circuit and snubber capacitance technology, which is applied in the field of snubber circuits, can solve the problems of low turn-off efficiency and slow current attenuation, and achieve the effect of high-efficiency turn-off

Active Publication Date: 2021-07-23
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, a snubber circuit is used to realize the soft breaking of the current. The traditional snubber circuit mainly includes a snubber capacitor and a fixed value resistor. Low breaking efficiency

Method used

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  • A buffer circuit, device and method
  • A buffer circuit, device and method
  • A buffer circuit, device and method

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Embodiment Construction

[0026] In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. Apparently, the described embodiments are only some embodiments of the present invention, rather than all embodiments of the present invention, and it should be understood that the present invention is not limited by the exemplary embodiments described here. Based on the embodiments described herein, all other embodiments obtained by those skilled in the art without creative effort shall fall within the protection scope of the present invention.

[0027] The non-linear resistance has the characteristic that the resistance value changes with the current value. In the present embodiment, the non-linear resistance is a piezoresistor. When the current passing through is small, such as several milliamperes, the resistance value of the non-...

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Abstract

The present invention provides a snubber circuit, equipment and method. The snubber circuit includes a snubber capacitor and a damping resistor connected in series. small features. The snubber circuit includes an RC-structure snubber circuit and an RCD-structure snubber circuit, which are mainly used in circuit breakers to meet the soft turn-off requirements when electronic power equipment is turned off, and can quickly attenuate the current after the current drops and turn off efficiently.

Description

technical field [0001] The invention belongs to the technical field of electronic power, and in particular relates to a buffer circuit, equipment and method. Background technique [0002] Current breaking technology is an important research direction in the field of electronic power. In practical applications, current breaking is limited by limit voltage, device loss, switching speed, etc. How to improve the reliability and efficiency of breaking is an important research direction in the field of power electronics. In the prior art, a snubber circuit is used to realize the soft breaking of the current. The traditional snubber circuit mainly includes a snubber capacitor and a fixed value resistor. The breaking efficiency is low. Contents of the invention [0003] The object of the present invention is to overcome the defects in the above-mentioned prior art, and provide a soft turn-off snubber circuit, equipment and method that can not damage circuit system components and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/041
CPCH03K17/041H03K2017/515
Inventor 曾嵘张翔宇余占清黄瑜珑陈政宇屈鲁魏天予
Owner TSINGHUA UNIV