LNK304 bypass overvoltage
I am troubleshooting a power supply based on LNK304 in a sort of flyback configuration, unlike any of the typical circuits in the data sheet (please let me know if there are any such design notes etc).
I measure 15.3V across the bypass capacitor, with only the capacitor connected between the BP pin and S. Does that mean the LNK304 is damaged? I replaced a failed LNK304 and all other components (diodes, capacitors) seem to be ok when individually measured.
Thanks!
评论
Thank you for your response. In the meantime, I believe that a replacement part I used (in an originally working circuit) was faulty. I have solved the problem with a part from a different source, but if you can tell whether the attached image seems to show a genuine part or not, I could advise the vendor.
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Hi charysm,
The attached image is a genuine part.
Thanks and regards,
PI-Lupin
Hi charysm,
Thank you for using PI's LNK304.
In connection to your concern, may I ask for the following for us to further help you out?
Thanks and regards,