TOPSWITCH 250YN POWER SUPPLY OPERATING RANGE PROBLEM.....

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I have designed 160w multioutput power supply using top 250yn switch by pi expert 8 suite. I have done everything correctly but the supply works only in 70 to 90v input range, after that it will goes off. please suggest what i can do for this problem......

i have attached the file in below attachment......

AttachmentSize
TOPSwitch-GX_PIDesign4.uds273 KB

Try shorting your L-pin to Source (which should disable the line overvoltage and undervoltage features). 

Let me know if this changes your input voltage operating range.

 

Regards,

 

-The Traveler