WEBENCH® Tools/LM3481: LM3481

payal valve

Prodigy 150 points

Part Number: LM3481

Tool/software: WEBENCH® Design Tools

We are designing boost converter with LM3481 using WEBENCH for following specifications

I/P Voltage-5V

OUTPUT-12V,1A

During hardware testing we found that no load voltage is 12V but after connecting 12 ohms resistive load,o/p voltage is 5V.As we increases output load from 12 ohms to higher value like 300 ohms output voltage increase from 5V to 12v. output voltage is not constant. PFA schematic attached.Please suggest solution for this issue.

over 6 years ago

0 Atul_Kulkarni over 6 years ago

Genius 4910 points

Hi Payal,

Could you please share the schematic as it is not attached.We will ask the concerned expertise to answer your query.

Regards,

Atul

0 Youhao Xi over 6 years ago in reply to Atul_Kulkarni

TI__Guru* 79925 points

Thank you Atul for chiming in.

Hi Payal,

Please share the schematic.

Thanks,

Youhao

0 payal valve over 6 years ago in reply to Atul_Kulkarni

Prodigy 150 points

WBDesign5 (2).pdf

0 Richard Fu22 over 6 years ago in reply to payal valve

TI__Mastermind 31305 points

Hi Payal,

Sorry for the delay in response.

Your schematic does not seem to match the input/output conditions. The load on the schematic is designed for 0.5 Amps, and you are loading it with a 1 Amp load.

Please adjust your component values so that you are meeting the design requirements.

Thanks,

Richard

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WEBENCH® Tools/LM3481: LM3481