LM5146-Q1: LTspice model/simulation of LM5146

Ryan Rah

Prodigy 180 points

Part Number: LM5146-Q1
Other Parts Discussed in Thread: LM5146, LM5116

Tool/software:

I created LTspice model of LM5146 based on undecrypted model available on TI website but getting error:

OR Is there any LTspice simulation of LM5146 that can be shared with me?

5 months ago

0 Timothy Hegarty 5 months ago

TI__Guru 73112 points

Hi Ryan,

We can't support LTspice unfortunately. I can send you a SIMPLIS model if that helps.

Regards,

Tim

0 Ryan Rah 5 months ago in reply to Timothy Hegarty

Prodigy 180 points

Thanks Timothy!

that would be great if you share the SIMPLIS or even better SIMetrix model of it along with transient or average simulation.

0 Timothy Hegarty 5 months ago in reply to Ryan Rah

TI__Guru 73112 points

Here it is - please edit as needed.

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/6102.LM5146-5V-25A-250kHz-regulator.sxsch

0 Ryan Rah 5 months ago in reply to Timothy Hegarty

Prodigy 180 points

Isn't this the simulation for average model?
What I need is spice model/simulation file of LM5146 for transient analysis in SIMetrix

+1 Timothy Hegarty 5 months ago in reply to Ryan Rah

TI__Guru 73112 points

Hi Ryan,

Unlike PSPICE, the same model in SIMPLIS will perform time and frequency domain analysis. SIMPLIS is ideal for PWM switching designs. The file I sent is suitable for looking at startup, load transient response, bode plot, input filter design, etc. I haven't got a SIMetrix model.

Tim

0 Ryan Rah 5 months ago in reply to Timothy Hegarty

Prodigy 180 points

Thanks Timothy, it will help a lot!
Do you have similar simulation file for LM5116?

0 Timothy Hegarty 5 months ago in reply to Ryan Rah

TI__Guru 73112 points

Hi Ryan,

You can submit a separate E2E for the LM5116 and the responsible apps engineer will reply.

Regards,

Tim

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LM5146-Q1: LTspice model/simulation of LM5146