Solution Finder Get Tech Support

link switch-3 family (LNK6405D)

Posted by: shivam02 on

I want to design a transformer for universal ac input , three isolated output of 12v with lnk6405d, but I am not getting that design by piexpert 10.0 tool.please help me.
input=85V-268V
OUTPUT 1 =12V,0.1A
OUTPUT 2 =12V, 0.1A
OUTPUT 3 = 12V, 0.1A
CAN I USE FEEDBACK WINDING FOR MICRO CONTROLLER SUPPLY ALSO.
THANK YOU VERY MUCH

Comments

Submitted by shivam02 on 01/01/2018

PLEASE HELP ME IN DESIGNING OF TRANSFORMER

Submitted by PI-Picard on 01/08/2018

Hi Shivam02,

You may use 12V, 0.3A to give you the correct transformer size to deliver the required power. Then just calculate the proper sizes of the secondary winding. Do note that having 3 output will affect the regulation. Usage of the feedback winding to supply a MCU will depend in your application like the timing of your signals and effect of the MCU as feedback load.

Regards,
PI-Picard