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  • TI Thinks Resolved

WEBENCH® Tools/LM5116: Design : 1260659/85 LM5116MHX/NOPB

Part Number: LM5116

Tool/software: WEBENCH® Design Tools

Hello

We are using LM5116

 

VinMin = 13.0V VinMax = 90.0V

Vout = 12.0V Iout = 3.0A

Device = LM5116MHX/NOPB Topology = Buck Created = 2018-04-04 02:10:07.

 

Design : 1260659/85 LM5116MHX/NOPB

 

 

In this

We are getting only 4.9VDc output ? pls help us to get 12V dc

 

Regards

H.J.Hamsaraj

  • Hello,

    Can you share your schematic please?

    Thanks.

    David.

  • In reply to user1260659:

    Hello,

    Unfortunately the link you provided is broken. Did you follow the Webench design exactly, using the recommended components? Or did you replace with alternative components of your own choosing? If so, what components? Also, if you follow the Webench design closely, I think that taking a look at your layout is a good idea? Did you follow the layout recommendations closely?

    Thanks.

    David.

  • In reply to David Baba:

    Hello

    we used the same components but it is getting 4.8V dc only 

    if you give me your mail ID i can send design 

    pls help us to solve the problem  

    Regards

    H.J.Hamsaraj

    hamshine@hotmail.com ,  hamshine@gmail.com

  • In reply to user1260659:

    Hello

    we used the same components but it is getting 4.8V dc only 

    if you give me your mail ID i can send design 

    pls help us to solve the problem  

    Regards

    H.J.Hamsaraj

    hamshine@hotmail.com ,  hamshine@gmail.com

  • In reply to user1260659:

    Please forward your schematic and layout to David.Baba@ti.com

  • In reply to David Baba:

    Hello,

    I checked your schematic and there does not appear to be anything that jumps out at me as being abnormal.  You could try decreasing C83 from 750pF to 100pF? 

    If that does not make things better, we should look into your layout?  Have you followed the layout guidelines in the datasheet?  Is it possible you can PDF the layout file of component placement and send to me at the email above.

    Thanks.

    David.

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