• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 64 subscribers
  • Views 288 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.

LM5170: Input GND and output GND are different

Francis Jiang
Intellectual 2340 points
Part Number: LM5170
Other Parts Discussed in Thread: PMP21867,

Hi Team,

Customer want to use LM5170 to achieve -48V input & 12V output. I think LM5170 can be used without problem and have verified by PMP21867.

But in customer system, the input GND and output GND are different, which in reference design is same. So will two different GND have problem? Or must use a same GND? Thanks.

BRs,

Francis

  • +1
    TI__Genius 12945 points

    Hello Francis,

    Thanks for reaching out. What is the reason for having 2 seperate grounds? Does the customer want isolation? We are looking forward for your response.

    Best regards,

    Moritz

  • 0 in reply to Moritz
    TI__Intellectual 2340 points

    Hi Mueller,

    Thanks for your prompt reply.

    After check with customer again, there is a mistake, they use a same GND for system, and he mispassing the concepts of PGND and AGND. No problem here.

    BRs,

    Francis