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Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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Design of LDO Regulator with Two Output

두 개의 출력을 갖는 LDO 레귤레이터 설계

  • Kwon, Min-Ju (Dept. of Electronics and Electrical Engineering, Dankook University) ;
  • Kim, Chea-Won (Dept. of Electronics and Electrical Engineering, Dankook University) ;
  • Kwak, Jae-Chang (Dept. of Computer Science, Seokyeong University)
  • Received : 2017.06.16
  • Accepted : 2017.06.30
  • Published : 2017.06.30
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Abstract

This paper proposes the Low-Dropout regulator with two output. Each of the two output has feedback, and shared feedback loop. PMOS is added to solve the problem the occur when sharing the feedback loop. Thus eased the Load Transient Response. Also Using one of the bias citcuit and one of the pass transistor, Area is reduce by half compared to Existing Area that used to obtain output of two output.

본 논문에서는 하나의 입력 전압을 받아 두 개의 출력전압을 가지는 LDO 레귤레이터를 제안한다. 두 개의 출력은 각각의 피드백단을 갖는다. 또한 각각의 피드백 단은 서로 피드백 루프를 공유하며, 서로 피드백 루프를 공유 할 시 서로 미치는 영향을 최소화 하기 위하여 피드백 역할을 하는 PMOS를 추가하여 Load Transient Response를 완화 시켰다. 또한 하나의 바이어스 회로와 하나의 패스 트랜지스터를 사용함으로써 기존 두 개의 출력전압을 얻기 위해 두 개의 LDO 레귤레이터를 사용할 때 대비 면적이 절반으로 줄어들었다.

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References

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