• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 554 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

Original question:

LM5122: Parallel 4 MOSFETs in both high side and Low side of IC LM5122

LM5121: LM5121 in interleave use

Santi Seeputtha
Prodigy 40 points
Part Number: LM5121
Other Parts Discussed in Thread: LM5122, LM5160

Can I use LM5121 in interleave mode  as same as LM5122 by using Sync pin (out of phase 180) 

  • 0
    TI__Guru* 78170 points
    Hi Santi,

    Thank you for your interest. Theoretically you can do this by pulling down the FB of the 2nd device and shorts its COMP to the 1st device. Just pay attention to your selection of the disconnect switch, and one may be turned on early and it must handle the total load current, so it should be well sized.

    Another option is to use two LM5122 in parallel, and use a dedicated hotswap device like the LM5160 or LM5050, to achieve the similar function without the burden of generating the two sync clock.

    Thanks,
    Youhao Xi
  • 0 in reply to Youhao Xi
    Prodigy 40 points
    Thank you very much. I will try by using comp pin.
    I have ever use LM5050 but my collage need to use control form LM5121.