TPS546B24A: PSpice simulation ERROR(ORPSIM-15141): Less than 2 connections at node M_UN0006

user6219297

Part Number: TPS546B24A

Hello,

I'm using PSpice to simulate switcher TPS546B24A. But I faced ERROR(ORPSIM-15141): Less than 2 connections at node M_UN0006 as below picture. Meanwhile, I can't find the node in error description via "Ctrl+F" search tools. Did you have some solutions to fix this issue? Your answer will be very helpful.

Thanks,

Xulong

over 2 years ago

0 Lishuang Zhao over 2 years ago

TI__Expert 7500 points

Hi Xulong,

Peter will feedback to you on US Monday. Please wait and thanks.

Lishuang

0 Peter James Miller over 2 years ago

TI__Mastermind 48180 points

user6219297

I will forward your inquiry to our PSPICE team for their advice and get back to you.

0 Karthik Kulkarni over 2 years ago

TI__Intellectual 1090 points

Hi Xulong,

I downloaded the model from TI website and it simulated properly in my system.

If you are using a modified schematic, please archive and share the project files with us so that we can have a look. The steps for same are below:

Go to File → Archive Project
Check the following checkboxes:
1. Library Files
2. Include TestBench
3. Referenced projects
4. Create Single Archive File

Regards,

Karthik

0 user6219297 over 2 years ago in reply to Karthik Kulkarni

Prodigy 50 points

test applo2-2021-07-20T13-58.zipMy project is attached. Please help check it.

0 Peter James Miller over 2 years ago in reply to user6219297

TI__Mastermind 48180 points

user6219297

Karthik Kulkarni should get back to you shortly.

0 Karthik Kulkarni over 2 years ago in reply to user6219297

TI__Intellectual 1090 points

Hi Xulong,

The project shared as well as the schematic was incomplete. I made the following changes to get the model to simulate. I used Published model from ti.com and made the following changes as per your schematic.

1. Modified the outpuit filter (L,C).

2. Modified the compensation values using parameters.

3. Modified the pinstrapping resistor values.

4. As per ADDRSEL, the model is looking for a synchronization input for switching. I added a pulse train of 550KHz for the same.

Please find the updated model attached. Let me know if this works for you. Thanks.

TPS546D24A_Custom.zip

Regards,

Karthik

Power management

Power management forum

TPS546B24A: PSpice simulation ERROR(ORPSIM-15141): Less than 2 connections at node M_UN0006