I need some tip or guide to design a low cost 6W constant-current LED-driver.
I noted that, in general, transformer is a big source of cost, so I'm searching for
something like LNK306 that I can switch the mains power directly on the inductor,
without transformer to reduce the costs.
Input: 90-250 AC
Output: 6W with constant-current
Someone have a design like this?