Journal of IKEEE (전기전자학회논문지)

Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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LDO Regulator with Improved Load Regulation Characteristics and Feedback Detection Structure

피드백 감지 회로 구조로 인한 향상된 Load Regulation 특성을 가진 LDO 레귤레이터

  • Jung, Jun-Mo (Dept. of Electronics Engineering, Seokyeong University)
  • Received : 2020.12.15
  • Accepted : 2020.12.30
  • Published : 2020.12.31
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Abstract

In this paper Low Drop-Out (LDO) regulator that improved load regulation characteristics due to the feedback detection structure. The proposed feedback sensing circuit is added between the output of the LDO's internal error amplifier and the input of the pass transistor to improve the regulation of the delta value coming into the output. It has a voltage value with improved load regulation characteristics than existing LDO regulator. The proposed LDO structure was analyzed in Samsung 0.13um process using Cadence's Virtuoso, Spectre simulator.

본 논문에서는 피드백 감지 회로 구조로 인하여 향상된 load regulation 특성을 개선시킨 LDO를 제안하였다. LDO 레귤레이터 내부 오차증폭기의 출력단과 패스 트랜지스터의 입력단 사이에 제안된 feedback 감지 회로를 추가하여 출력에 들어오는 델타 값의 regulation을 개선시켜 기존의 LDO 레귤레이터보다 개선된 load Regulation 특성의 전압 값을 갖는다. 제안된 회로는 Cadence의 Spectre, Virtuoso 시뮬레이션을 이용하여 삼성 0.13um 공정에서 특성을 시뮬레이션 하였다.

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References

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