TINA/Spice/LM5023-2NBEVM: LM5023 updated on August 2013, Tina model uploaded in July 2013

Imtiaz Charania

Part Number: LM5023-2NBEVM
Other Parts Discussed in Thread: TINA-TI, LM5023

Tool/software: TINA-TI or Spice Models

According to the LM5023 document, the Current Feed Forward resistor was changed from 1k to 6.6kOhm on August 2013. Was that change implemented in the Spice models and TINA reference design. If not, is there a way to work around it ?

over 6 years ago

0 John Stevens over 6 years ago

TI__Expert 7395 points

Imtiaz,
Thanks for your interest in TI here. I've contacted an applications engineer to answer you here.
One thought though: the feedforward resistor is an external component, correct? So you should be able to change the value in the TINA model.
Regards,
John

0 Imtiaz Charania over 6 years ago in reply to John Stevens

Prodigy 60 points

Jon,

Unfortunately this is an internal component and cannot be manually configured.
Regards,

0 Wei-Hao Chen (TW-FAE) over 6 years ago in reply to Imtiaz Charania

TI__Expert 3260 points

Hi Imtiaz,

This is Application Engineer Wei-Hao from Texas Insturments. Please wait while I am reaching the designer of the LM5023 TINA model and verify the internal feedforward resisor value. I will get back to you as soon as I can.

Thank you very much.

Best Regards,
Wei-Hao

0 Wei-Hao Chen (TW-FAE) over 6 years ago

TI__Expert 3260 points

Hi Imtiaz,

Thank you for your patience. The designer has just confirmed the LM5023 TINA Spice model had this update as well, the internal current feedforward resistor value of the spice model is 6.6k ohms.

I hope this would help to clarify your question, and please do not hesitate to let us know if you have any further questions.

Thanks.

Best Regards,

Wei-Hao Chen

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TINA/Spice/LM5023-2NBEVM: LM5023 updated on August 2013, Tina model uploaded in July 2013