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51 Threads found on Convergence Transient
Did you try to change some time related parameters of the Simulation Options panel for transient analysis ? There you can select simulation optimized either to better convergence or better accuracy, or even manually change to another value higher than default.
dcop: begin dcop, cpu clock= 3.04E+03 dcop: begin pseudo transient dcop: ...failed in final try dcop: end pseudo transient dcop: begin gshunt ramping dcop: gshunt = 0.1000000E-03, gmin = 0.1000000E-12, iter = 200 dcop: gshunt = 0.1000000E-03, gmin = 0.9500000E-12, iter = 200 dcop: gshunt = 0
It's the same pb. for all continuity - DC and transient - analyses: too low a GMIN option can prevent convergence (often by transistors being (driven) in off mode), whereas setting GMIN too large can create inaccuracy.
transient convergence, any difficulties in following a fast edge will make the timestep downrange and if the simulator has "gotten out over its skis" (accepted a large timestep solution-point as valid, and then it discovers it missed something) it can't downrange far enough to reacquire acceptable tolerance and instead tries until it hits the mi
Hi, I designed a step-down converting circuit. I was able to get the simulation working but then I added a shunt resistor and the TSC101c currenst sensing amplifier and I get a convergence simulation issue. I tried the TSC101c model in an other circuit and it worked fine. Thank you for the help 117770 Schematic:[ATTACH=CONFIG
IO_STM DRVL 0 DRVH 0 DtoA1 DtoA_STM DtoA2 DtoA_STM DtoA3 DtoA_STM DtoA4 DtoA_STM TPWRT 100.000000E+03 ERROR -- convergence problem in transient bias point calculation Last node voltages tried were: NODE
hello, I have implemented the circuit shown in the image attached with this post. When i run the circuit it gives me and error i.e. "ERROR -- convergence problem in transient bias point calculation". The simulation window shows these messages: **** 04/18/15 12:56:13 ****** PSpice Lite (October 2012) ****** ID# 10813 **** ** Profile: "S
Step size less than 2 makes no sense. There should be some unit (or, you specified a crazy large minimum timestep of 0.2 seconds). But usually very fine time stepping comes from transient convergence problems, such as lack of sane capacitances, over-ideal edges, bistable elements that get "stepped past" and break the iterative solution process w
Hi, I'm developing a step down converting circuit using the Texas Instrument Converter TPS54331. I imported the PSpice model of the component and draw the circuit, but when i launch the simulation the sequent error appears: ERROR -- convergence problem in bias point calculation Please, can anyone help? Thank you This is the schematic:[ATTACH
Hello, I have tried to perform a transient noise analysis, but I received this error: ERROR (SPECTRE-16192): No convergence achieved with the minimum time step specified. I have read the possible solutions, but I don't know how to change "cmin". Do you have any suggestion? Are there other things I can do?
hi I am new here and was wondering if you can help me with this error (PSPICE) **** INCLUDING **** * source PAC C_C1 GND N00143 1u R_R1 N00246 N00290 10k X_10k N00290 GND N00143 SCHEMATIC1_10k X_U1 N00143 N00246 +15 -15 N00290 uA741 .subckt SCHEMATIC1_10k 1 2 t RT_10k
There are several circuit faults, LO2 and HO2 interchanged, both HS pins that are necessary for bootstrap operation unconnected. So at present, the circuit can't work. But convergence problems aren't unlikely with MOSFET switching circuits, thorough tuning of transient analysis parameters may be required to get the circuit work after correcting
The spice simulator adds resistances from each node to ground to aid in convergence. The value of this resistance is 1/Gmin. Set the value of Gmin to 1e-15 or lower.
Such error messages are-generally-result of convergence problems which come from frequently semiconductor models,floating nodes,extreme component values,interlacing meshes etc. In your case, using multiplier is not really lovely for transient simulator because this component is behavioural one and math. expressions in it can create some (...)
I doubt gate resistors will help your convergence problems. Capacitors can give problems if they have no series resistance and are in parallel with voltage sources (so can create infinite current) but a more likely cause is the IR2110 model. Have you followed the instructions in the IR2110.TXT file with the model, in particular: Shoul
Hi, I am simulating a power amplifier(PA) with a bias ciucuit in the cadence spectre transient simulation, a separate simulation of PA circuit and a bias circuit waveforms are good, but when putting the PA and bandgap reference bias circuit together with no direct connetions, I find the output of bias biginning to oscillate with a swing of se
Hi, I've been working on a power device macromodel based on abm, but I got stuck in convergence issues (transient analysis) when Vdd goes over 100V I changed RELTOL, ABSTOL, VNTOL, etc., but I wasn't yet able to have it working with higher voltages. The model is in the attached pdf. I am using PSPICE from Cadence SPB v16.3 Any ideas? T
Hi, I am simulating an oscillator and it works fine in transient simultaion. But then I insert a clock source in the circuit which has no connection or relation with the rest of the circuit. You can say the clock is simply giving voltage pulses across a resistor. nothing else....and for this clock when i set a frequency of 1MHz. My transient simu
Hi there I need help on this ckt to to transient analaysis. I am getting the error . I have copied and paste the some of the similar error but there are more there i also have attached the pic of whole unit and a Individual unit. please help me why i cant get the transient analysis. My ckt has no error for sure. thank you ERROR -- Converg
Look at operating-point capacitances of your diodes and transistors. Your transistor model params assign no junction capacitance and if I understand the syntax, only two of the four diodes are passed a CJ0. Insanely small node capacitances are a good way to get transient nonconvergence. I'd also be suspicious of those switches and how they're co