LM3886: OrCAD Pspice model don't work in version 2019 (17.4)

Dobrivoje Ninkovic

Part Number: LM3886
Other Parts Discussed in Thread: LM2876

Hello,

I've been getting the message

ERROR(ORPSIM-15142): Node X_U1.11 is floating

when trying to simulate an amplifier with LM3886 in PSpice for TI.

The library is current (updated today).

Thank you in advance.

Dobrivoje

0 Sam(MPAA) Zhang over 3 years ago

Hi,

Could you post your schematic here?

Looks like the error info is pin floating. You may double check if it is well connected. Thanks!

Regards,

Sam

0 Dobrivoje Ninkovic over 3 years ago in reply to Sam(MPAA) Zhang

Hello,

Thank you for your reply.

Acc. to the netlist, all exposed pins of U1 are connected.

Regrads,

Dobrivoje

0 Robert Clifton56 over 3 years ago in reply to Dobrivoje Ninkovic

Hi Dobrivoje,

The file seems to not have uploaded properly. Can you please reupload?

Thanks,

Robert Clifton

0 Dobrivoje Ninkovic over 3 years ago in reply to Robert Clifton56

Hello Robert,

Sorry, It looked ok on my screen before posting

Another try:

0 Sam(MPAA) Zhang over 3 years ago in reply to Dobrivoje Ninkovic

Hi Dobrivoje,

I made the same circuit with you in "Pspice for TI" and got the same problem with you... Looks like there is some issue with the LM3886 model.

Alternatively, you may use the model for LM2876 for the simulation. They are similar devices. I tried and it worked well.

Thanks!

Regards,

Sam

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