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LM5109B: Control Voltage of HO and LO

Can Zhang
Prodigy 70 points
Part Number: LM5109B

HI,

 i'm just wondering how to control the output voltage of HO and LO, since I'm need 48V at HO and 12V at LO

Thanks,

Allen

  • 0
    TI__Expert 3355 points

    Hi Allen,

    Thank you for your question. I work on the applications team in the high power drivers group.

    The most common method of supplying high-side bias is through a bootstrap supply. Feel free to read the app note linked below to gain a better understanding of how bootstrap supplies work.

    http://www.ti.com/lit/an/slua887/slua887.pdf

    If this answered your question, could you please press the green button? If not, feel free to ask more questions.

    Thanks and best regards,

    John