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viper25

Question asked by niraj.sam on Nov 8, 2011
Latest reply on Jan 3, 2012 by niraj.sam
In my design iam using Viper25DTH.
My o/p power is upto 6W i.e. 4.1V@1.5A.

But whenevr i am ging 1W load, the voltage on VDD pin starts to oscillate between 4.5V to 15V and feedback voltage is upto 3.4v, it seems that OLP protection is on at this stage.

I have selected Rlimt=18K
                        Rovp=100K
                       Rff=1000K
I  have done many iterations to achieve o/p but invain.
Please suggest

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