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LM3488Q-Q1: LM3488Q-Q1 output 350V

Eric Shen42
Expert 2750 points
Part Number: LM3488Q-Q1
Other Parts Discussed in Thread: LM3488, LM5155

Dear TI team:
    Can LM3488 can support 350V/1mA output application? Can you give me a reference design.

    The customer wants the input voltage to be 5V, I think it can be higher, 12V or 24V.

    Thanks!

Regards!

Eric Shen

  • 0
    TI__Mastermind 21720 points

    Hi Eric,

    Thanks for reaching out with your questions and for considering the LM3488. I recommend taking a look at the LM5155, which is the next generation or the LM3488.

    To achieve the required step-up ratio there are two approaches.

    1. Design to the Boost converter to operate in discontinuous conduction mode (DCM) for all operating cases.

    This is done if this reference design.

    2. Add a discrete charge pump to double the output voltage.

    This is done in this reference design.

    Please let me know if you have any questions.

    Thanks,

    Garrett