I am using the opa564 to act as a unity gain buffer into a reactive load (a transformer). I am trying to pump a 250khz triangle wave (could be a sin wave if I wanted) out of the opa564 and into the transformer so I can get a 300V pk to pk wave out of the transformer (ratio is 3.2 ohm to 1.6k ohm). I have succeeded somewhat. The issue is that the chips have been failing half the time. I followed the tech doc and used the value of Rset that will give me max current. I am using a split rail (12 to -12) and the wave by the time it gets to the opa564 is approx 11.6V pk to pk.The only thing I can think is that maybe my application pushes it too much and some chips maybe being pushed outside it's tolerance level?
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