A temperature-compensated CMOS ring oscillator for DC-DC converters

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概要

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• A novel current controlled CMOS ring oscillator is presented in this paper. Specially circuit structure and transistor parameters design is used to obtain good temperature coefficient. The designed ring oscillator circuit has been used in a CMOS step-up switching regulator controller which has been implemented using a 0.5μm double poly double metal CMOS technology. The test result shows that the frequency is about 1.2MHz and the error (Δf/f) is about 3.5% in the temperature range −20-100°C. The circuit is quite suitable for DC-DC converters.

• The Institute of Electronics, Information and Communication Engineersの論文

著者

• Xiaojuan Xia

  College of Electronic Science and Engineering, Nanjing university of Posts and telecommunications

• XinCun Ji

  College of Electronic Science and Engineering, Nanjing university of Posts and telecommunications

• Yufeng Guo

  College of Electronic Science and Engineering, Nanjing university of Posts and telecommunications

• Bing Zhu

  College of Electronic Science and Engineering, Nanjing university of Posts and telecommunications

• Lei Wang

  College of Electronic Science and Engineering, Nanjing university of Posts and telecommunications

関連論文

• A temperature-compensated CMOS ring oscillator for DC-DC converters

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