LM74700-Q1: LM74700 P-Spice simulation as Negative polarity protection

Ruchita Mishra

Part Number: LM74700-Q1

While simulating LM74700 as reverse polarity protection circuit, I am getting Convergence issue. I tried below setting which is already there in forum but it didn't worked for me.

Circuit diagram is as it is shown in Typical application Diagram in datasheet, but with Negative Input voltage source (-24V).

Kindly help and let me know If I am missing something.

over 1 year ago

0 Shiven Dhir over 1 year ago

TI__Mastermind 47955 points

Hi Ruchita,

Are you using Pspice for TI or OrCAD Pspice?

Can you share a snip of simulation schematic.

Regards,

Shiven Dhir

0 Ruchita Mishra over 1 year ago in reply to Shiven Dhir

Prodigy 20 points

Hi Shiven,

Please find the snap.

0 Shiven Dhir over 1 year ago in reply to Ruchita Mishra

TI__Mastermind 47955 points

Hi Ruchita,

Thanks for the snip.

Can you try using a VPULSE instead of Vdc at the input.

Regards,

Shiven Dhir

0 Ruchita Mishra over 1 year ago in reply to Shiven Dhir

Prodigy 20 points

Hi Shiven,

With the above settings and keeping simulation profile as Transient and for 2 ms stilll I ma getting below error:

0 Shiven Dhir over 1 year ago in reply to Ruchita Mishra

TI__Mastermind 47955 points

Hi Ruchita,

I am not able to replicate this issue on my system. The model works just fine.

Do you want me to share an unencrypted file?

Regards,

Shiven Dhir

0 Ruchita Mishra over 1 year ago in reply to Shiven Dhir

Prodigy 20 points

Hi Shiven,

Yes Please.

Thank you in advance

0 Rakesh over 1 year ago in reply to Ruchita Mishra

TI__Guru** 105361 points

Hi Ruchita,

I am sending you unencrypted file to your email. Please try with that.

Regards,

Rakesh

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LM74700-Q1: LM74700 P-Spice simulation as Negative polarity protection