ogulcan123
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Hi,
I very strange thing happens that I hope somebody else had the same issue before.
I've designed a buck converter circuit using L7981A exactly as it is described in its datasheet. I normally works fine.
If I first plug the connector, then open the power supply, it works perfectly fine.
However, if I first open the power supply, then plug the connector, it burns (i.e. the input terminal of the buck IC becomes short).
Circuit draws around 100mA. My schematic is as follows:
Thanks in advance.
I very strange thing happens that I hope somebody else had the same issue before.
I've designed a buck converter circuit using L7981A exactly as it is described in its datasheet. I normally works fine.
If I first plug the connector, then open the power supply, it works perfectly fine.
However, if I first open the power supply, then plug the connector, it burns (i.e. the input terminal of the buck IC becomes short).
Circuit draws around 100mA. My schematic is as follows:
Thanks in advance.