LED DRIVER DESIGN
Posted by: prdpm101
on
Dear sir
i hav requirement of 45W LED driver, but it can withstand 440VAC@50Hz for 3 Hrs continuously.
Pls advice whether it can be possible
regards
Pradeep
Comments
Dear sir,
Pls suggest a design with detailed ckt diagram
Hi,
For this type of request, please contact your local FAE.
Thanks.
Hi,
I can't find an existing DER for a 440 VAC input. What I can suggest right now is to use a buck converter on LYTSwitch-4 of LNKSwitch-PH devices and use the 725V part.
At 440VAC, the peak drain voltage is around 630 V for a buck converter.
However, other components such as capacitors, bridge rectifiers, have to be properly rated as well.