LDO的AC分析与tran分析结果不一样!!

fengtang2332

请问楼主，本帖中的“且最差情况下过冲也较小”，对这个“过冲”的具体要求是怎样的呢？
谢谢。

fengtang2332

请问楼主，本帖中“且最差情况下过冲也较小”，其中对“过冲”有怎样的要求呢？其上限值是怎样计算的？
谢谢.

forever1201

One of  benefit of ac simulation using Spectre stb is the accurancy at high frequency region. It will consider the loading effect in your circuit, LC method, however, it doesn't. I also recomment use Spectre stb to do ac simulation

microstudent

回复 33# forever1201

对，stb的仿真是最准确的，不过如果选好在高阻节点ac开环的话，应该大体上没什么问题。

forever1201

回复 34# microstudent
Even select the high impedance node to do AC simulation through RC, the parasitic capacitance at that node at very high frequency still would affect the accuracy of the AC result

高晨阳

EETOP，nice！