I am using a capacitive load in charge pump in CADENCE h035 technology. But when I am creating charge pump symbol and using it in other circuit its showing errors while simulating (runs upto 1% and the spectre error) I know its due to the load at the output port of Charge pump but I dont know how to use it or replace it because that output capacitance is very important.
Please suggest me something.
Thanks in advance.
I would respectfully ask you to read the forum guidelines. A few points:
But this kind of thing is all in the guidelines.
In reply to Andrew Beckett:
In reply to Mushir:
No circuit was attached, and you didn't show the error...
I pasted the circuit schematic but I dont have any idea why its not showing in the post. It went through some moderation also before getting posted. I am new to this forum so I am not sure what is the problem with it.
Use the Options tab at the top of the page to attach a picture (e.g. a png file) rather than trying to paste in an image.
I have attached the screenshot of the circuit scematic and error screen.
This is the error screen
It's still not really enough to go on. Presumably the convergence difficulty is caused by some numerical instability in the circuit - and without seeing the data, it's going to be very hard to debug (you didn't mention which device makes the difference). Usually small timesteps are caused by discontinuities in the device models, combined with large component values (or negative component values). I see you have a 500pF cap there, which is large (for IC) but not immense. There appear to be some 50uF capacitors too - but maybe that's just the resolution of the image - driving these with a 10u/0.5u transistor seems a bit hopeful.
Maybe you should contact customer support? Then we can properly look at your data, maybe.