Webench vs Switcher Pro / TPS54331

Tsukui Yusuke

Guru 21930 points

Other Parts Discussed in Thread: TPS54331, TPS54140

Hi.

Please let me know about webench and switcher pro.

The values of A differ by the simulation result of Webench and　Switcher　Pro.

Although a part　 is a near value, do the values of phase margin differ so far?

Which should phase margin believe?

I attach the result of webench and switcher pro which were outputted.

3187.TPS54331 SwitcherPro report(Vin=15V,Vout=5.5V,Iout=1.02A).pdf

8713.TPS54331webenchReportsServlet(Vin=15,Vout=5.5,iout=1.02A).pdf

yusuke

over 13 years ago

0 Tsukui Yusuke over 13 years ago

Guru 21930 points

Hi,

When can I have your response?

Best Regards,

yusuke

0 MaciejKucia over 13 years ago in reply to Tsukui Yusuke

Mastermind 7925 points

I believe webench is the most recent software. I would go with webench results.

Regards,
Maciej

0 Tsukui Yusuke over 13 years ago in reply to MaciejKucia

Guru 21930 points

Hi.

Thank you for giving a comment.

Do I hear that the simulation methods differ? (A circuit constant is almost the same. )

I want you to teach why results differ.

Regards,

yusuke

0 MaciejKucia over 13 years ago in reply to Tsukui Yusuke

Mastermind 7925 points

The computation engines are for sure differ. Webench was "adopted" by TI after National acquisition.

http://investor.ti.com/releasedetail.cfm?ReleaseID=720551

Sorry but I do not know the details.

Regards,
Maciej

0 Abhishek Gupta - WEBENCH Design Center over 13 years ago in reply to MaciejKucia

TI__Intellectual 890 points

Hi Yusuke,

As Maciej suggested, we recommend you to use WEBENCH for designing with TPS54331. This tool has the most up to date calculations.

WEBENCH and SwitcherPro are two different design engines and some internal parameters used during the calculations are slightly different between the two.

Regards,

-Abhishek

0 Tsukui Yusuke over 13 years ago in reply to Abhishek Gupta - WEBENCH Design Center

Guru 21930 points

Hi Abhishek,

Thank you for giving a reply .

Between WEBENCH and SwitcherPro, I understand about some internal parameters used for calculation differing slightly.

However, does the value of the phase margin of WEBENCH and SwitcherPro have a difference like this?

Regards,

-yusuke

0 Surinder Singh over 13 years ago in reply to Tsukui Yusuke

TI__Expert 3085 points

Yusuke-San,

We recommend that you use WEBENCH for all your analysis. This tool is the one we currently support.

Thanks for using WEBENCH tools and thanks for your very kind feedback.

Regards,

0 Greg over 11 years ago in reply to Surinder Singh

Expert 2071 points

Hi Surinder,

If it is true that you recommend Webench instead of Switcher Pro, I would like to recommend that TI state something to that effect on the Switcher Pro product page (http://www.ti.com/tool/switcherpro). If it is only true for certain components, then it should list which tool is recommended for each. I spent a good deal of time comparing the results of Switcher Pro with Webench for the TPS54140, only to come to the conclusion that Switcher Pro produced inferior results. The Switcher Pro product page says "NOTE: New devices are being added to the tool on a regular basis". That leads one to believe it is actively being supported when in actuality it isn't.

Thanks and regards,

Greg

0 Surinder Singh over 11 years ago in reply to Greg

TI__Expert 3085 points

Greg,

Your suggestions is noted. I will pass it along to the team.

Thanks for using TI products and using WEBENCH.

Regards,

Surinder

0 Greg over 11 years ago in reply to Surinder Singh

Expert 2071 points

Hi Surinder,

Thanks! And I do like TI products and the Webench software. I'll soon find out how well the simulations match reality.

Greg

0 Surinder Singh over 11 years ago in reply to Greg

TI__Expert 3085 points

Greg,
We appreciate you using TI devices and WEBENCH tool. Your feedback is very valuable--keep it coming.
Regards,Surinder

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Webench vs Switcher Pro / TPS54331