TPS54231 Pspice model convergence problem

Chris Rousset

Other Parts Discussed in Thread: TPS54231

I downloaded the Pspice model for the dc-dc controller using TPS54231 but I am not able to run this dc-dc "as-is". I didn't change anything in the simulation options or schematic. I get convergence errors.
Anyone mind trying to verify it can run. Could you tell me what options you are using under options in the simulation settings?
BTW I am using version 16.6

The address link is www.ti.com/.../slum255

Thank you.
Chris.

over 8 years ago

0 JohnTucker over 8 years ago

TI__Guru**** 191445 points

Works fine for me in 16.5. Enclosed find my settings:

simset.zip

0 Chris Rousset over 8 years ago in reply to JohnTucker

Prodigy 80 points

That's strange. Same settings now and still am having convergence issues:

Reducing minimum delta to make the circuit converge.
Reducing minimum delta to make the circuit converge.
Reducing minimum delta to make the circuit converge.
Reducing minimum delta to make the circuit converge.

ERROR(ORPSIM-15138): Convergence problem in Transient Analysis at Time = 50.37E-06.
Time step = 266.5E-21, minimum allowable step size = 1.000E-18

These supply currents failed to converge:

I(V_V1) = -14.19A \ -14.06A
I(X_U1.V_U3_V2) = 3.289nA \ -37.38nA
I(X_U1.V_U4_V1) = 40.05uA \ 40.59uA
I(X_U1.X_U4_H1.VH_U4_H1) = 40.05uA \ 40.59uA
I(X_U1.X_U4_F3.VF_U4_F3) = 40.05uA \ 40.59uA

These devices failed to converge:
X_U1.E_U6_ABM1

0 Chris Rousset over 8 years ago in reply to Chris Rousset

Prodigy 80 points

I placed a very small R and L in series with the source and now the simulation is running.

0 JohnTucker over 8 years ago in reply to Chris Rousset

TI__Guru**** 191445 points

I'm going to move this to the modeling forum. Nothing else I can do for you here.

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TPS54231 Pspice model convergence problem