• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 64 subscribers
  • Views 548 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.

LM5071: LM5071 - configure to non-isolated buck topology without Temp compensation

Jason Dai
Expert 3720 points
Part Number: LM5071

Hi E2E,

Our csutomer want to configure LM5071 to non-isolated topology, like Figure 18 in datasheet, but they want to remove Q2 + Temp comp.

How to modify the circuit for the portion of feedback?

does just put feedback resistor divider for 1V25 from Vout?

BR,

Jason

  • 0
    TI__Expert 8420 points
    “Dear customer, Thank you for your interest in a Texas Instrument’s solution. Due to the Christmas/New Year holidays, our response time is likely to be longer than usual. Rest assured we have received your question and want to close it as soon as possible. If this is truly urgent, we suggest you work through your local support and/or procurement channels.”
  • 0 in reply to Michael Tan
    TI__Mastermind 40100 points
    Hi Jason,

    Yes you can simply readjust R12 if the temp comp circuit is not desired. It is similar calculation for voltage feedback. Note however, you can expect the line and load regulation to be worse if it's not used. Especially for 1.25V where regulation is important.