PSPICE-FOR-TI: About TPS62813 Start-up behavior

Cheney Wen

Prodigy 80 points

Part Number: PSPICE-FOR-TI
Other Parts Discussed in Thread: TPS62813

Hi Expert

Need Help!!

My tool is PSPICE for TI and version shows below

In my simulation case about : TPS62813 start-up behavior.

using PWL-CSV file input the file which are form pre-stage simulation

There are two files. 1 from output the other is from PG signal.

From pre-stage's output always trigger fail.

From pre-stage's PG signal trigger normally.

Can you check the reason and clarify the Start-up condition?

The DSN file and CSV attached

I also checked EN pin for PG signal , Vin for output signal. still fail to trigger the circuit.

My original circuit include 3 TI power ICs....

(If experts need my concept circuit, please give me a Email address.)

NEW_3IN1_ASK.DSN TESTA_Vout5.csv TESTA_PG5.csv

11 months ago

0 JC Zhu 11 months ago

TI__Mastermind 29035 points

Hi Cheney,

would you please archive and share the entire project instead? Here's how: https://e2e.ti.com/support/tools/sim-hw-system-design/f/simulation-hardware-system-design-tools-forum/969692/faq-pspice-for-ti-how-do-i-share-pspice-for-ti-projects?tisearch=e2e-sitesearch&keymatch=faq%252525253Atrue

-JC

0 Cheney Wen 11 months ago in reply to JC Zhu

Prodigy 80 points

Hi JC

New file attached, thanks for help.new_3in1_ask.zip

0 JC Zhu 10 months ago in reply to Cheney Wen

TI__Mastermind 29035 points

Cheney,

Thanks. We'll take a look at this.

-JC

0 JC Zhu 10 months ago in reply to JC Zhu

TI__Mastermind 29035 points

BTW, would you please attach the csv files here? They are not in the zip.

-JC

0 Cheney Wen 10 months ago in reply to JC Zhu

Prodigy 80 points

Hi JC

My mistake, here are the CSV files

For the Vin

5148.TESTA_Vout5.csv

For the EN

4643.TESTA_PG5.csv

Thanks

-Cheney

0 Farheen 10 months ago in reply to Cheney Wen

TI__Genius 10600 points

Hello Cheney,

Let me have a look at it.

Thanks,

Farheen

0 Farheen 10 months ago in reply to Farheen

TI__Genius 10600 points

Hello Cheney,

Apologies for the additional delay. I will respond you next week as my Pspice software is having some issue. Meanwhile do you have Simplis model?

Thanks,

Farheen

0 Cheney Wen 10 months ago in reply to Farheen

Prodigy 80 points

Hi Farheen

Never mind.

Thanks for the update.

We have no Simplis tool in company.

[update]

Thanks for the help.

I tried again, New CSV file seems noting difference with old file.

However, the switch point move on and pump to my designed value.

if you need to try, I attached the new CSV file as below.

For the Vin

T5V.csv

For the PG

TPG.csv

Finally, the result is same as 3 chips in one simulation time.

Thanks TI expert Farheen and JC

Cheney

0 Farheen 10 months ago in reply to Cheney Wen

TI__Genius 10600 points

Hello Cheney,

Thanks for the update and sharing the csv files. Let me try, if I find something, I will update you.

Thanks,

Farheen

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PSPICE-FOR-TI: About TPS62813 Start-up behavior