• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 741 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LM5110: gate driver for mosfet switch in leui of needing a isolated source

FJ
Intellectual 330 points
Part Number: LM5110
Other Parts Discussed in Thread: LM5112

I need to control lower mosfet with a gate driver that is isolated, but design below does not allow for isolated grounds.  I could possible use an isolated power supply for gate drivers or maybe your LM5110 would create a negative voltage for mosfet drive?

  • 0
    TI__Genius 13445 points
    Hi FJ,

    Thanks for reaching out to the High Power Drivers' group, my name is Mamadou DIallo and I will help address your concerns.
    LM5110 and LM5112 are great choices for its negative output voltage capability.
    You may use LM5110-3 (dual inverting/non-inverting channels) and just use the inverting channel to drive the lower FET.

    The thread below further discusses how to generate negative bias for the driver.

    e2e.ti.com/.../713670

    Please let us know if you have further questions or press the green button if this helped address your inquiry.

    Regards,

    -Mamadou