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

IEICE Electronics Express

Ji XinCun¹  Wang Lei¹  Zhu Bing¹  Guo Yufeng¹  Xia Xiaojuan¹ 

[1] College of Electronic Science and Engineering, Nanjing university of Posts and telecommunications

关键词: temperature compensated;    ring oscillator;    current reference;   

DOI  :  10.1587/elex.10.20130833

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(5)Cited-By(2)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.

【 授权许可】

Unknown