摘要
设计了一种基于UMC 0.6μm BCD工艺,中心频率为1MHz,占空比为90%的振荡器电路。该电路作为DC-DC电源芯片的核心模块之一,采用迟滞和恒流源充放电技术,实现了高精度和高稳定性,具有良好的可移植性。HSPICE仿真结果表明:在2.5~6V的电源电压和-40℃~125℃的温度范围内,其振荡频率和占空比的偏差分别为±7%和3.1%。
An oscillator with 1 MHz of central frequency and 90% of duty cycle was designed based on UMC's 0. 6 μm BCD process. Hysteresis and constant current charging/discharging technology were adopted to realize high accuracy and good stability. As one of core sub-blocks in DC-DC converter, the circuit could be transplanted into other systems. HSPICE simulation results showed that, with 2. 5 V to 6 V supply voltage and at temperature from -40 ℃ to 125 ℃, the proposed oscillator had a frequency deviation of ±7% and a duty cycle variation of 3. 1%.
出处
《微电子学》
CAS
CSCD
北大核心
2009年第5期677-679,695,共4页
Microelectronics
基金
国家自然科学基金-中物院联合基金资助项目(10876029)