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

The Korean Institute of Power Electronics (전력전자학회)
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Hold up Time Extension Technique for high efficiency, high power density server power supply

고효율 고밀도 서버용 전원장치를 위한 Hold up Time 보상 기술

  • 김영도 (KAIST 전기 및 전자공학과) ;
  • 조규민 (KAIST 전기 및 전자공학과) ;
  • 문건우 (KAIST 전기 및 전자공학과)
  • Received : 2010.02.28
  • Accepted : 2010.03.08
  • Published : 2010.04.20
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Abstract

Nowadays, climate change becomes serious problem in all around country. Especially because of global warming problem, every country is suffered from various natural disasters. To prevent these changes, every industry are keep requiring the increase in energy efficiency. Recently, in the regulation of CSCI (climate savers computing initiate), the efficiency of server power supply should meet the demand of 94% at 50% load condition by 2010, which is called platinum level. Hence, server power system has been dramatically developed with the various technique for the high efficiency of it. Among those technique, hold up time extension technique has received wide attention and has been researched for a long time. In this paper, technical trend of hold up time extension circuit will be covered for the high efficiency, high power density server power supply.

최근 전 세계적인 지구 기후 변화에 따라 에너지를 절약하기 위한 정책이 수립되고 있으며 특히 권고 사양인 CSCI 규제가 점차 강화되고 있어 서버용 전원장치의 효율 조건 역시 높아지고 있다. 이에 따라 서버용 전원 장치의 효율 향상을 얻을 수 있는 기술로서 hold up time extension 기술이 많은 주목을 받아왔다. Hold up time 보상기술은 서버용 전원 장치가 가지는 hold up time 이라는 특징으로 인하여 발생할 수 있는 손실을 추가적인 기술을 통하여 보상함으로서 효율을 높일 수 있는 방법으로 그동안 많은 연구가 이루어져 왔다. 본고에서는 고효율 고밀도 서버용 전원장치를 위한 hold up time 보상회로에 대하여 알아보고자 한다.

Keywords

References

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