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dkarthick
dkarthick
Associate
February 12, 2013
Question

52W LED Driver

  • February 12, 2013
  • 2 replies
  • 772 views
Posted on February 12, 2013 at 12:13

Dear All,

I would like to design a 52W LED Driver (140-270 VAC) with output 36V, 1.5A and with efficiency > 90%. Please suggest and help me.

Thanks in advance

Karthick

#led
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2 replies

difranco.fabrizio
difranco.fabrizio
Associate
February 28, 2013
Posted on February 28, 2013 at 09:29

Hi,

You can refer to AN4028 or AN3424, as two examples of ST's  High Power Factor Flyback design for driving LEDs with high efficiency.

Some changes are needed to fit your requirements.

Thanks & Best Regards

Fabrizio

dkarthick
dkarthickAuthor
Associate
September 26, 2013
Posted on September 26, 2013 at 11:38

Thank you very much for your suggestion.

I am using L6564 for my LED Driver 20W to 60W. I am acheiving a Power Factor of 0.95. But I need a P.F of 0.98. Please suugest me as I am using the schematic according to AN4028

Also I am facing problem in THD.

Please suggest.

Thank you

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