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2008•Conference proceedings/Conference proceedings - IEEE Applied Power Electronics Conference and ExpositionRequires access

Design of high efficiency Flyback converter with energy regenerative snubber

Chih-Sheng Liao, Keyue Smedley

Open publisher page 74 citations

Abstract

The Flyback converter is frequently used for multiple outputs and low power application due to its simplicity and both step-up and step-down characteristics. However, the high leakage inductance of the flyback transformer can causes high voltage spike and could damage the main transistor when the switch is turned off. Therefore, a turn-off snubber is needed to limit the peak voltage stress. In this paper, some common snubbers are discussed in comparison with the energy regenerative snubber. The operation of the energy regenerative snubber is analyzed and the design procedures are optimized for energy efficiency followed by experimental verification.

About this research paper

What this paper is about

The Flyback converter is frequently used for multiple outputs and low power application due to its simplicity and both step-up and step-down characteristics. However, the high leakage inductance of the flyback transformer can causes high voltage spike and could damage the main transistor when the switch is turned off. Therefore, a turn-off snubber is needed to limit the peak voltage stress. In this paper, some common snubbers are discussed in comparison with the energy regenerative snubber. The operation of the energy regenerative snubber is analyzed and the design procedures are optimized for energy efficiency followed by experimental verification.

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OpenAlex reports 74 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

The Flyback converter is frequently used for multiple outputs and low power application due to its simplicity and both step-up and step-down characteristics. However, the high leakage inductance of the flyback transformer can causes high voltage spike and could damage the main transistor when the switch is turned off. Therefore, a turn-off snubber is needed to limit the peak voltage stress. In this paper, some common snubbers are discussed in comparison with the energy regenerative snubber. The operation of the energy regenerative snubber is analyzed and the design procedures are optimized for energy efficiency followed by experimental verification.

Key concepts: Snubber, Flyback transformer, Transformer, Leakage inductance, Flyback converter, Voltage spike, Limit (mathematics), Electronic engineering

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