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LM25184EVM-S12: LM25184 output has been started with an exception

hongwei duan
Intellectual 450 points
Part Number: LM25184EVM-S12
Other Parts Discussed in Thread: LM25184

Hello：

I tested the LM25184EVM. When 8V was input, the output voltage rose, the output current was output, and then dropped. After a certain period of time, it could be output. My yellow signal is the input voltage, my blue signal is the output voltage, and my red signal is the output current.I would like to ask how to remove the first three current pulses from the output.

  • 0
    TI__Guru 73022 points

    Hello,

    Are you hitting current limit at startup? What's the load?

    Note that the output current capability of a flyback is reduced at lower Vin. See the LM25184 Excel quickstart calculator for more detail (the file is downloadable from the product folder).

    Regards,

    Tim