一种自给基准参考电压的前置稳压器设计与研究  

Design and Analysis of Self-Reference Voltage Pre-Regulator

作　　者：冯伟[1] 戴宇杰[1] 张小兴[1] 吕英杰[1] 

机构地区：[1]南开大学电子信息与光学工程学院,天津300071

出　　处：《南开大学学报（自然科学版）》2016年第3期59-64,共6页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：天津市科技计划项目(13ZCZDGX04100)

摘　　要：设计1种可实现自给基准参考电压的前置稳压器.提出1种新的电路结构,该电路结构由前置稳压电路和基准参考电压产生电路组成.前置稳压电路输出稳定电压为芯片其他模块提供稳定电压,基准参考电压产生电路输出与电源无关的基准参考电压,作为前置稳压电路的参考电压,通过反馈机制,实现稳定输出,从而为芯片在供电电压波动较大的情况下,提供稳定电压.采用BCD工艺模型对电路进行仿真,仿真结果证明此种稳压器的线性调整率为0.008%,负载电流由0上升至100 m A时,负载调整率是1.18%,当频率为10 k Hz时,电源纹波抑制比为-58 d B,频率为40 k Hz时,抑制比为-29.7 d B.A self- reference voltage pre- regulator is designed. A new circuit structure is proposed,which is composed of pre- regulator circuit and reference voltage generating circuit. Pre- regulator circuit outputs the stable voltage for other blocks of the circuit. Reference voltage generating circuit outputs the reference voltage which is independent of power supply, through feedback mechanism the circuit achieves a stable output for chip. Simulation with BCD350 process, results show that line regulation of regulator is0.008%, load regulation is 1.18% when load current rises from 0 to 100 m A, power support ripple rejection is-58 d B as frequency is 10 k Hz and-29.7 d B as frequency is 40 k Hz.

关 键 词：前置稳压电路 基准电压产生电路 误差放大器 功率输出 

分 类 号：TN431.1[电子电信—微电子学与固体电子学]