SMPS output is not coming

Thread Starter


Joined Feb 20, 2024
I used TNY267 IC in my SMPS without connecting load the output is coming. but when i connect a load it's not working (it comes like ON and OFF). when i check PWM of the IC it shows fluctuating not constant signal. but i change the IC then also the same thing is coming so problem is not with a IC but pwm output is not coming properly. Someone tell me hoe to troubleshoot it.


Joined May 3, 2013
I think the Current Limit is kicking in. But without a schematic, or at least the Make and Model, no further advice is possible.