TPS40305: TPS40305 Model in PSpice for TI

Shimon Otsri

Prodigy 10 points

Part Number: TPS40305

I'm trying to simulate the buck controller TPS40305, seems even the model test circuit is not working properly.

figures attached.

Can you help?

Thanks

over 3 years ago

0 Peter James Miller over 3 years ago

TI__Guru 53255 points

Shimon Otsri

I will ask our modeling team to look into the issue.

0 Peter James Miller over 3 years ago

TI__Guru 53255 points

Can you share your project file?

+1 Peter James Miller over 3 years ago

TI__Guru 53255 points

Shimon Otsri

I think I found your issue. Your simulation only shows through 1.2ms. The model is accurately representing the TPS40305's 1.9ms start-up calibration. If you let the simulation run longer, say 2.5ms, you will see the SS/EN pin pull low, then rise and the part start up.

Sorry for any trouble, confusion, or delay that may have caused you.

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

Power management

Power management forum

TPS40305: TPS40305 Model in PSpice for TI