Pole-zero pairs (doublets) affect stability?

[wangkes9]

If there are Pole-zero pairs (doublets) in transition function , is there any effect on
stability. An example or paper is preferred.

Thanks.

 

[LvW]

No, there will be no or only minor influence on stability properties.
However, there my be a severe influence on settling time (time domain).

Added later: Influence on settling time (increase) if both are not well matched!

 

[wanghs1986]

If there are Pole-zero pairs (doublets) in transition function , is there any effect on
stability. An example or paper is preferred.

Thanks.

I saw your post on now newsmth, and again here.

I would say the answer probably is yes, especially when other parasitic nondominant pole or coupling exists.

 

[LvW]

If there are Pole-zero pairs (doublets) in transition function , is there any effect on
stability. An example or paper is preferred.

Thanks.

I saw your post on now newsmth, and again here.
I would say the answer probably is yes, especially when other parasitic nondominant pole or coupling exists.

The answer, definitely, is no!
And other parasitics were not part of the original question.

 

[crystalballs]

Hi, attached paper will be very useful to you.
CBs

 

[piyudhaker]

Hi,
It depends where thay occur. Stability depends on the phase margin at unity gain.