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Photovoltaic lighting control with single chip integration

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Abstract

This paper presents a photovoltaic control system with mixing-mode chip design. The chip includes the photo sensor, amplifier and digital decision core, and driver circuits. The photo-sensor is implemented with the p+/n− well diodes to generate the photo current with the array of diodes. Following, the operational amplifier is used to enhance the signal level, in which the gain is adjustable to control the detected sensitivity from the photo-sensor. Next, the digital controller is designed to keep a stable status for the output level while the twilight slowly changing from dark-to-bright or bright-to-dark. The LED driver is implemented to increase the output current in the last stage. The photo control chip is successfully implemented with TSMC 0.35 μm MOS technology, which the core size is about 928.7 × 807.1 μm.

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Acknowledgement

This work was supported by the National Science Council, Taiwan, under nsc96-2221-E-327-006-MY3-3.

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Authors and Affiliations

  1. National Yunlin University of Science and Technology, Douliou, Yunlin, Taiwan

    Shih-Chang Hsia

  2. National Kaohsiung First University of Science and Technology, Kaohsiung, Taiwan

    Chih-Kuan Kuo

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  1. Shih-Chang Hsia
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  2. Chih-Kuan Kuo
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Correspondence to Shih-Chang Hsia.

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Hsia, SC., Kuo, CK. Photovoltaic lighting control with single chip integration. Analog Integr Circ Sig Process 73, 375–383 (2012). https://doi.org/10.1007/s10470-011-9760-0

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  • DOI: https://doi.org/10.1007/s10470-011-9760-0

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