Low cost - LED driver
Hello,
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.
Requirements:
Input: 90-250 AC
Output: 6W with constant-current
Someone have a design like this?
回應
Hi,
Thanks for your reply, this power supply that you sugested me fits very well to my requirementes.
Do you have another design to the following requirements:
Low cost, without transformer
Input: 90-250 AC
Output: 9W with constant-current
Thanks.
I can't find an existing design but you can try to push LYT-0 to 9W by using higher VOUT. Output regulation over line may not be good but this is the closest design for a wide-range, transformer-less design.
what value of drumcore inductor can i use inplace of EE10 transformer.
Hi,
If your design is similar to RDR355, then the inductance used was 1.35mH. You can try 1.2mH or 1.5mH if you are using a drum core.
Hi..i don't have much experience but as per my knowledge RDR-355 if it fits your requirement.The EE10 transformer can be replaced by a drum core. Also if your design is similar to RDR355, then the inductance used was 1.35mH. You can try 1.2mH or 1.5mH if you are using a drum core.
Hi,
Please check RDR-355 if it fits your requirement. The EE10 transformer can be replaced by a drum core.