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  • TI Thinks Resolved

WEBENCH® Tools/LM25116: lm25116

Prodigy 20 points

Replies: 3

Views: 74

Part Number: LM25116

Tool/software: WEBENCH® Design Tools

i have designed the lm25116 pcb board for 12v @ 25 amps and used the quick start calaulator values

i got the output voltage as 12v , but when i put some load , the output voltage reduces to 2 or 3v 

even i can vary the input voltage the output voltage stays constant ,this is true , but when i connect the load the output voltage goes to 2-3v 

please help me out , 

pleasse let me know th error

  • Hi alagar,

      Can you share your quick start file so that I can check your spec?  Your given information is limited.  We can't guess the root cause.

     And try to reduce your output cap to see any improvement.

    Gavin 

  • In reply to alagar krishna:

    Hi ,

      I reviewed your schematic, two suggestions:

    1.  Try to reduce your output cap to see any improvement.

    2. Try to change Rramp=470k to see any improvement.

    Gavin 

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