ADM2487E: D1/D2 pin

Hello,

I have a question about the D1/D2 of ADM2487E.

I am using ADM2487E with the same circuit as Figure34 in the datasheet.

In my circuit, When VDD1 reaches about 1.4V, D1/D2 and GND are short-circuited.

And, the overcurrent flows to the transformer.

When the voltage of VDD1 goes up further, D1/D2 starts oscillating.

I want to solve the problem of the overcurrent to the transformer until D1/D2 starts oscillating.

Could you tell me advice of the cause?

Best Regards,

Mr.K

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  • 0
    •  Analog Employees 
    on Aug 18, 2016 10:48 AM

    Hi Mr. K,

    Table 13 in the data sheet lists Transformers that were characterised for use with the ADM2487E.

    Which transformer are you using?

    Is your transformer primary voltage 3.3V or 5.0V ?

    Can you share your circuit schematic and part numbers?

    Regards,

    Richard

Reply
  • 0
    •  Analog Employees 
    on Aug 18, 2016 10:48 AM

    Hi Mr. K,

    Table 13 in the data sheet lists Transformers that were characterised for use with the ADM2487E.

    Which transformer are you using?

    Is your transformer primary voltage 3.3V or 5.0V ?

    Can you share your circuit schematic and part numbers?

    Regards,

    Richard

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