Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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A Research of Power-Efficient Driving Scheme for Auto-Focus on Image Sensor Module

이미지 센서 모듈을 위한 자동-초점 기능의 전력-효율적인 구동 방법에 대한 연구

  • 차상현 (삼성전기 기술총괄 UM 솔루션랩) ;
  • 박찬우 (삼성전기 기술총괄 UM 솔루션랩) ;
  • 이연중 (삼성전기 기술총괄 UM 솔루션랩) ;
  • 황병원 (삼성전기 기술총괄 UM 솔루션랩) ;
  • 권오조 (삼성전기 기술총괄 UM 솔루션랩) ;
  • 박득희 (삼성전기 기술총괄 UM 솔루션랩) ;
  • 권경수 (삼성전기 기술총괄 UM 솔루션랩) ;
  • 이재신 (삼성전기 기술총괄 UM 솔루션랩) ;
  • 황신환 (삼성전기 기술총괄 UM 솔루션랩)
  • Published : 2009.12.01
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Abstract

We present a power-efficient driving scheme that consists of piezoelectric actuator and driver IC for AF (Auto-Focus) on ISM (Image Sensor Module). The piezoelectric actuator is more power-efficient than conventional voice coil motor actuator. And high power-efficiency driver IC is designed. So the proposed driving scheme using designed piezoelectric actuator and driver IC is more close to recent trend of green IT. The diver IC should guarantee fast and accurate performance. So, the optimum driving method and high accurate frequency synthesizer are proposed. The die area of designed driver IC is $2.0{\times}1.6mm^2$ and power consumption is 2.8mW.

Keywords

References

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