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TINA-TI: Convergence problem with TINA-TI simulation

Pablo Armet
Mastermind 37683 points
Other Parts Discussed in Thread: TLC555, TINA-TI, SN74AUP2G79

Hello,

I am running a transient analysis of frequency dithering circuit on TINA-TI using a TLC555 device and a D flip-flop. However, I get a "convergence problem. check the analysis parameter" error. Below is a screenshot of the message.

When I simulate each of the two circuits ("Astable 250kHz square wave generator.TSC" and "SN74AUP2G79- D-type flip-flop.TSC") separately, the simulation runs perfectly. However, the convergence problem arises when the two circuits are combined ("Frequency Dithering circuit.TSC").

Can you help me understand and fix this convergence issue. Could it be due to my current analysis parameter configuration not set up properly?

Your help is appreciated. 

Frequency Dithering circuit.TSCAstable 250kHz square wave generator.TSCSN74AUP2G79-D-type flip-flop.TSC