一种线性RC压控振荡器的设计  

Design of a Linear Voltage Controlled RC Oscillator

作　　者：张竹贤[1] 吴传奎[1] 王鑫[1] 明鑫[1] 周泽坤[1] 张波[1] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,成都610054

出　　处：《微电子学》2013年第5期607-610,共4页Microelectronics

摘　　要：基于LLC串联谐振芯片的应用,提出了一种线性RC压控振荡器。在传统RC振荡器的电容上叠加一个压控电流源,实现了频率受电压线性控制。仿真结果表明,该电路在典型参数下振荡器频率范围为140～280kHz,在-40℃～125℃温度范围内可保持正常工作,且可通过外部电阻电容进行设置。该振荡器已被应用于脉冲频率调制模式下工作的LLC串联谐振芯片。A linear voltage controlled RC oscillator was proposed for LLC series-resonant chip. By applying a voltage controlled current source to the traditional RC oscillator, frequency of the oscillator could be linearly controlled by voltage. Simulation results showed that the oscillator had a frequency range from 140 kHz to 280 kHz in typical situation, and it operated in a wide temperature range from -40 ℃ to 125 ℃ with external resistor and capacitor for setting. The oscillator was applied to an LLC series-resonant chip in PFM mode.

关 键 词：LLC串联谐振 压控振荡器 RC振荡器 脉冲频率调制 

分 类 号：TN43[电子电信—微电子学与固体电子学]