Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Design of a Charge Pump Circuit Using Level Shifter for LED Driver IC

LED 구동 IC를 위한 레벨 시프터 방식의 전하펌프 회로 설계

  • 박원경 (인제대학교 나노시스템공학과) ;
  • 박용수 (충청대학교 전기전자학부) ;
  • 송한정 (인제대학교 나노시스템공학과)
  • Received : 2012.09.27
  • Accepted : 2012.12.03
  • Published : 2013.01.01
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Abstract

In this paper, we designed a charge pump circuit using level shifter for LED driver IC. The designed circuit makes the 15 V output voltage from the 5 V input in condition of 50 kHz switching frequency. The prototype chip which include the proposed charge pump circuit and its several internal sub-blocks such as oscillator, level shifter was fabricated using a 0.35 um 20 V BCD process technology. The size of the fabricated prototype chip is 2,350 um ${\times}$ 2,350 um. We examined performances of the fabricated chip and compared its measured results with SPICE simulation data.

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References

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