The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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AC-DC Converter using the PFC Inductor and LLC Resonant Transformer with an Integrated Magnetic Core

하나의 코아로 집적화된 PFC 인덕터와 LLC 공진변압기 적용 AC-DC 컨버터

  • Received : 2013.10.07
  • Accepted : 2015.05.06
  • Published : 2015.06.20
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Abstract

An integrated two-in-one transformer applicable to PSUs for a 120 W LED TV is proposed. This transformer comprises a PFC inductor and an LLC transformer placed and integrated on an E-I-E type magnetic core. Performance is evaluated by observing the coupling coefficients of the proposed two-in-one transformer under various air gap topologies. Among the topologies studied, an integrated transformer with centered air gap shows stable operational characteristics with a minimized mutual coupling (interference). Furthermore, applicability of the proposed integrated transformer to PSUs for a 120 W LED TV is studied from the viewpoint of integrating different magnetic components into one core, resulting to low weight, low cost, and high power density.

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References

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