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Viper 26LD loosing regulation

Question asked by Vitorino.Rafael on Jul 2, 2016
Latest reply on Sep 15, 2016 by Patrizia Bellitto
Hi,
 I have used eDesign to implement viper on my application. My specs are input voltage 70Vdc to 160Vdc / output 15Vdc (5.1W). For some reason, the viper 26LD is loosing regulation (when connecting to a load) - the output voltage decreases as the load increases. Furthermore, I heard buzz coming out of it. After replacing the component a few times, the buzz stopped but I still didn't get the right output voltage.

You may find attached the schematics!
Thanks in advance for your support. 

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