UC2875: UC2875

Younes Salami

Prodigy 10 points

Part Number: UC2875
Other Parts Discussed in Thread: UCC28950,

Can you provide a LtSpice model for this part?

over 2 years ago

0 Mike O' over 2 years ago

TI__Guru* 86286 points

Hello,

I am revenging your inquiry and will get back to you shortly.

Regards,

0 Mike O' over 2 years ago in reply to Mike O'

TI__Guru* 86286 points

Hello,

TI does not have any plans on creating an LTSpice model for this older TI device.

However, the newer UCC28950 has a TI Spice model that you can use. You can find it at the following link.

https://www.ti.com/lit/zip/slum169

The UCC28950 is a newer PSFB controller and I would consider using that in your design instead.

It has many improved features over the older UC2875. You can find out more about the UCC28950 features in the devices date sheet in the following link.

https://www.ti.com/lit/gpn/ucc28950

Regards,

0 Younes Salami over 2 years ago in reply to Mike O'

Prodigy 10 points

Hi, thank you for the reply but the spice model of the UCC28950 is not working either. I got " too few nodes" error while trying to simulate it.

Thanks

0 Mike O' over 2 years ago in reply to Younes Salami

TI__Guru* 86286 points

Hello,

I have received your inquiry and it is under review.

Regards,

0 Mike O' over 2 years ago in reply to Mike O'

TI__Guru* 86286 points

Hello,

I double checked and the release PSpice model does work in TI Pspice. If you are not using the TI Pspice simulator maybe you should give it a try.

You can download and use it for free. You can down load TI Pspice from the following link.

https://www.ti.com/tool/PSPICE-FOR-TI?keyMatch=PSPICE%20FOR%20TI

Regards,

0 Younes Salami over 2 years ago in reply to Mike O'

Prodigy 10 points

Thank you, No I haven't been using the TI one but it doesn't work with LTspice. Can you fix it so can be used on LtSpice?

0 Mike O' over 2 years ago in reply to Younes Salami

TI__Guru* 86286 points

Hello,

Sorry LTSpice was developed by a competitor and we can't support it. However, I could send you an unencrypted model it you would like? Some customers have been able to import these models into LTPSpice and with some debugging have reported they have gotten them to work. Please note that if you have an issue with LTSpice importing a model you would have to get support from there applications team.

Regards,

Mike

0 Younes Salami over 2 years ago in reply to Mike O'

Prodigy 10 points

Thank you, I am very good with LTspice, but the model has an issue. Please send me an unencrypted model, I will work on it. appreciate your help.

0 Mike O' over 2 years ago in reply to Younes Salami

TI__Guru* 86286 points

Hello,

I am reviewing your inquiry and will get back to you shortly.

Regards,

0 Mike O' over 2 years ago in reply to Mike O'

TI__Guru* 86286 points

Hello,

The following e2e link has an unencrypted PSpice model for the UCC28950/1 devices.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/918886/ucc28951-unencrypted-pspice-model-for-ucc28951-or-ucc28950

Regards,

Power management

Power management forum

UC2875: UC2875