Title

An Active-Clamp Snubber For Isolated Half-Bridge Dc-Dc Converters

Keywords

Active clamp; Converter; DC-DC; Half bridge; Isolation; Leakage inductance; Lossless snubber; Reverse recovery; Topology; Transformer

Abstract

In the conventional isolated half-bridge DC-DC converter, the leakage-inductance-related losses degrade the converter efficiency and limit the increase of the converter switching frequency. A novel active-clamp circuit is proposed to recycle the energy stored in the leakage inductance and thus improves the converter efficiency. By transferring the energy in the leakage inductance to a capacitor, the leakage inductance energy is recycled. Moreover, the proposed active-clamp circuit avoids the body diodes conduction of primary-side switches. Hence the body diodes conduction and reverse-recovery losses are eliminated. The principles of operation and simulation results are presented. The experimental results show the proposed active-clamp circuit improves the efficiency of the half-bridge DC-DC converter.

Publication Date

12-1-2003

Publication Title

IECON Proceedings (Industrial Electronics Conference)

Volume

1

Number of Pages

42-48

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

1442354448 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/1442354448

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