Lighter flicker on UPS or Square wave inverter

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Hello,

I am using LYT4227, LYT4226 and LNK460 ICs into my led driver solution.
I am very satisfied with your products and so our customer does.

But there is filciker issue when I am going to take power from UPS or Square wave inverter.

This problem occurs in only power factor corrected driver only. There is no problem in LNK306 based driver.

Is there any solution for that ?
Can this problem avoid by adding some extra components to my driver ?

Hi,

Those controllers need the sine input information to properly regulate. They are not designed to work with UPS inputs.

What I will suggest to try to reduce the power first and check if the flicker goes away. I will also try to add a capacitor across Vpin.