need led driver circuit

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hitesh19872419

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help me on designing power (1 watt led and max 20 led in series) led driver ckt with 80 - 250 ac input without transformer
 

see this and the Capacitor is about 0.22 and 0.47 uf
 

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Most transformerless designs are for smaller loads but I'm sure you can adapt. Google "transformerless power supply" for more.

http://ww1.microchip.com/downloads/en/AppNotes/00954A.pdf

Supertex makes a variety of LED drivers designed to operate directly from high voltage AC.

**broken link removed**
 

hitesh19872419 said:
help me on designing power (1 watt led and max 20 led in series) led driver ckt with 80 - 250 ac input without transformer
Click to expand...

With the said parameters, you'll require 66 volts @ 330mA current which is normally a rare combination and may not be available in open market. So just clarify what help you require / expect from the forum members. Just some ideas about how to design one or complete tested project with schematics, PCB layouts etc?
 

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