电子元件与材料2017，Vol.36Issue(12)：21-24,31,5.DOI:10.14106/j.cnki.1001-2028.2017.12.005
适用于数字电源的新型温度自校准片上振荡器的设计
Designofanovelon-chiposcillator withtemperatureself-calibration fordigital power
摘要
Abstract
A novel on-chip oscillator with temperature self-calibrationwasdesigned for digital power. The oscillator used ring oscillator on chip as a "temperature sensor", the offset current of ring oscillator was designed to be proportionalto thermodynamic temperature. As a reference signal for calibration, the frequency of the output clock signalwas highly sensitive to temperature. The self-calibration algorithm controlled the current of RC oscillator and calibrated the output clock frequency, which completed real-time temperature self-calibration function. The symmetric structure of two comparator and SRtrigger was adopted to reduce the delay error. Based on 0.18μm BCD process, the circuit was simulated by using Cadence and Hspice software. The simulation results show that the center frequency is 10.1MHz, and the offset of oscillator frequency withtemperature variation is within±0.6% when the temperature rangesin-55-+155℃.关键词
数字电源/环形振荡器/RC振荡器/低温漂/自校准/高频率Key words
digital power/ring oscillator/RC oscillator/low temperature drift/self-calibration/high-frequency分类
信息技术与安全科学引用本文复制引用
谢炜,冯全源..适用于数字电源的新型温度自校准片上振荡器的设计[J].电子元件与材料,2017,36(12):21-24,31,5.基金项目
国家自然科学基金重点项目资助(No. 61531016) （No. 61531016）
四川省科技支撑计划重点项目资助(No.2016GZ0059 （）
No.2017GZ0110) （）
