UCC5350: Spice model

onda.kohei

Part Number: UCC5350

I would like to request you to check the SPICE model of UCC5350SBD.

The model of UCC5350MCD has been modified to avoid "False turn ON of upper NMOS.".
On the other hand, the model of UCC5350SBD has not been modified.
Does the same problem not occur in UCC5350SBD?

Spice Model
UCC5350MCD(Rev. A): www.ti.com/.../sllm368
UCC5350SBD: www.ti.com/.../sllm379

over 2 years ago

0 Don Dapkus over 2 years ago

TI__Guru**** 189399 points

Thank you for your inquiry. This problem may not exist in all simulations. If you have an issue, please let me know, and we can look into the issue with you.

Best regards,

Don

0 onda.kohei over 2 years ago in reply to Don Dapkus

Prodigy 10 points

Thank you for your response.
In my model, upper MOS and lower MOS conduct at the same time.

/cfs-file/__key/communityserver-discussions-components-files/196/test_5F00_UCC5350SBD.zip

0 Don Dapkus over 2 years ago in reply to onda.kohei

TI__Guru**** 189399 points

Hi,

Can you swap the SB model with the M model in your simulation to confirm the issue is caused by the SB model itself and not the simulation?

Best regards,

Don

0 onda.kohei over 2 years ago in reply to Don Dapkus

Prodigy 10 points

Hi,

I had already checked the SB model and confirmed that the MCD model does not cause any problems.
So I am concerned that there is a problem with the SB model.

Best regards

/cfs-file/__key/communityserver-discussions-components-files/196/test_5F00_UCC5350MCD.zip

+1 Don Dapkus over 2 years ago in reply to onda.kohei

TI__Guru**** 189399 points

Hi,

Yes, it looks like the SB version has the same issue that the M version had previously.

I will submit a request to have this fixed. In the meanwhile, can you use the M version to continue your work?

Best regards,
Don

0 onda.kohei over 2 years ago in reply to Don Dapkus

Prodigy 10 points

Hi,
Thank you for your comment.

OK.
But, I would like a model with separate source and sink terminals, I am also awaiting the revesion of the model.

Best regards,

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UCC5350: Spice model