TPS65131: How to simulate on WebENCH, etc.

hiroshi.yamada

Prodigy 40 points

Part Number: TPS65131

Tool/software:

TPS65131 to enter 5V and generate a power supply of ± 15V output.

I am considering it.

I want to simulate, but unfortunately webench can only simulate one output device.

Simulate parameters such as resistance and capacitors to output ± 15V in TPS65131? (Calculation?) Please tell me the tools you can do.

4 days ago

0 hiroshi.yamada 4 days ago

Prodigy 40 points

I have checked various things.

It seems that the positive side design can be confirmed with WEBENCH Designer for the TPS65131.

Also, it seems that the negative side design can be confirmed with the TPS65131-Q1.

I think that the electrical specifications are almost the same, with or without -Q1, depending on whether it is an automotive product or not.

Is it okay to merge these two designs and design it?

I look forward to your good advice.

0 Patrick Yao 3 days ago in reply to hiroshi.yamada

TI__Mastermind 28170 points

Hi Yamada,

Allow me some time to check this. Could you please also send me the design results?

Patrick

0 hiroshi.yamada 3 days ago in reply to Patrick Yao

Prodigy 40 points

Hi Patrick

Thank you for your comment.

I have posted two PDFs of the Webench results (+15V, -15V).

Does this make sense?

I am waiting for the confirmation results.

Best regards,

Hiroshi Yamada

WBDesign177.pdf0167.WBDesign176.pdf

0 Patrick Yao 3 days ago in reply to hiroshi.yamada

TI__Mastermind 28170 points

Hi Yamada,

I see, allow me some time to review the design.

Patrick

0 Patrick Yao 2 days ago in reply to hiroshi.yamada

TI__Mastermind 28170 points

Hi Yamada,

You can combine these two schematics. Both inductors could be 4.7uH.

Patrick

0 hiroshi.yamada 2 days ago in reply to Patrick Yao

Prodigy 40 points

Hi　Patrick,

Thank you for your excellent answer.

It looks like we'll be able to move forward with our investigation.

I just want to confirm one thing in the comments section.

>Both inductors could be 4.7uH.

Am I correct in understanding that the inductor (5.6uH) used at the positive side "INP" and

the inductor (4.7uH) used at the negative side output "OUTN" can both be 4.7uH?

Best Regards,

Hiroshi Yamada

0 Patrick Yao 2 days ago in reply to hiroshi.yamada

TI__Mastermind 28170 points

Hi Yamada,

Yes, your understanding is correct.

Patrick

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TPS65131: How to simulate on WebENCH, etc.