zczc999
New Member
Offline
Posts: 3
|
Hello everyone,
I have a very strange pss simulation that the pll charge pump voltage suddenly becomes unstable after locking. But if I use transient simulation, I don't see this change. (pink plot is from transient simulation, red plot is pss)
Also the PLL feedback clock begins to lose locking. Then I have convergence problem.
What is the possible reason for this ?
|