WEBENCH® Tools/LM5165-Q1: Device selection fails after entering low output current

Dominik Herbold

Part Number: LM5165-Q1

Tool/software: WEBENCH® Design Tools

Hello TI team,

I am struggeling with the WEBENCH^® POWER DESIGNER . If I enter the following inputs on http://www.ti.com/product/LM5165-Q1/toolssoftware

over 5 years ago

0 Amod Vaze over 5 years ago

TI__Mastermind 26300 points

Dominik,

Thanks for your question. It seems the entry point has some issue with 150mA Iout and we will take a look into it. However, I have a LM5165-Q1 design shared link with Vin=10-48V, 5V Vout and 0.15A Iout: https://webench.ti.com/appinfo/webench/scripts/SDP.cgi?ID=D4F05E8B4A9E77EC f you would like to create designs at other inputs, you can change the inputs on the design that I shared with you.

0 Dominik Herbold over 5 years ago in reply to Amod Vaze

Prodigy 60 points

Dear Amod Vaze,

thank you for your fast replay and your shared link. I have the same problems I discribed earlier.

0 Amod Vaze over 5 years ago in reply to Dominik Herbold

TI__Mastermind 26300 points

Dominik,

Were you able to open the shared design link?

What are your input conditions? (VinMin, VinMax, Vout, Iout) and what issue are you facing?

Can you share a screenshot of the issue along with steps to reproduce the issue?

Regards,
Amod

0 Dominik Herbold over 5 years ago in reply to Dominik Herbold

Prodigy 60 points

Amod,

I am able to open the shared design link.

If you visit the webside of the part LM5165-Q1 and scroll down entering following conditions:

On the left side of the design tool it displays the the min an max switching frequency 100-600 kHz. If you go through the operating values its calculating a switching frequency of 787,45kHz.

0 Praveen Badiger over 5 years ago in reply to Dominik Herbold

TI__Expert 8365 points

Hi Dominik,

The device is operating in PFM mode due to low load current. We are looking into why the frequency is exceeding the maximum limit of 600KHz. We will keep you updated on this.

Thanks & Regards,
Praveen

0 Harish K R over 5 years ago in reply to Praveen Badiger

TI__Intellectual 2320 points

Hi Dominik,

We have fixed the issue w.r.t frequency when the device operates in PFM mode. The changes will be available on ti.com by last week of January 2020.

Kindly let us know in case you have any queries.

Thanks & Regards,

Harish

0 Dominik Herbold over 5 years ago in reply to Harish K R

Prodigy 60 points

Hey Harish,

thank you very much for listening, fixing the issue and the good support on that!

Thanks and Regards

Dominik

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WEBENCH® Tools/LM5165-Q1: Device selection fails after entering low output current