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SMPS regulation problem

Posted by: Roshan on
Hi , I have designed 12v 3.5a smps using TOP245Y. I am using it in led display panel & it updates on every second. My problem is when i use smps with led (seven segment)display, when display goes update, some segment will not lit or some will unnecessary lit. I got new readymade smsp from market & that is working fine. In my smsp no voltage drop. Can some one guide me what is the problem ? Regards Roshan

Comments

Submitted by treez on 02/27/2009

sorry what is your set-up?.........can you take the 7seg out of the equation, then simply load your SMPS with a dummy load resistor of 12/3.5 ohms and tell what happens then?