전자공학회논문지SC (Journal of the Institute of Electronics Engineers of Korea SC)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

CMOS OTA를 이용한 펄스폭 변조회로

Pulse Width Modulation Circuits Using CMOS OTAs

  • 김훈 (한양대학교 전자전기제어계측공학과) ;
  • 김희준 (한양대학교 전자컴퓨터공학부) ;
  • 정원섭 (청주대학교 전자정보공학부)
  • Kim, Hoon (Department of Electronics, Electrical, Control, and Instrumentation Engineering, Hanyang University) ;
  • Kim, Hee-Jun (School of Electronics and Information Engineering, Hanyang University) ;
  • Chung, Won-Sup (School of Electronics and Information Engineering, Chongju University)
  • 발행 : 2006.11.25
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초록

본 논문은 CMOS OTA를 이용한 3 개의 PWM 변조기를 제안한다. 이들은 램프 적분기와 전류로 임계전압은 조정할 수 있는 슈미트 트리거로 구성되었다. 개별 소자를 사용해 만든 원형회로는 제안된 PWM 회로들의 시비율이 선형적으로 제어될 수 있음을 보여준다. 제안된 변조기들은 구조가 간단하기 때문에 모노리식 IC로 쉽게 제작할 수 있다.

This paper presents three PWM modulators using CMOS OTAs. They consist of a ramp integrator and current-tunable Schmitt triggers. Prototype circuits built using discrete components exhibited that their duty cycles are linearly controllable. The proposed modulators can be easily fabricated in a monolithic IC, because they have a simple structure.

키워드

참고문헌

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